General Threaded Back-Pressure regulators Model GBT8 1/4″ NPT – Threaded The GBT8 regulators are available as springloaded back-pressure regulators The design pressures are 420 and 700 bar Material is Stainless Steel 316L Seatdiameter 2,5 mm datasheet GBT8S Springloaded Pressure Regulator Model GBT15 1/2″ NPT – 1/2” BSPP – Threaded The GBT15 regulators are available as springloaded back-pressure regulators The design pressures are 50,280 and 420 bar Material is Stainless Steel 316L Seatdiameter 7 mm – Cv 1.0 and Cv 0.7 datasheet GBT15S-50 Springloaded Back-Pressure Regulator datasheet GBT15S-420 Springloaded Back-Pressure Regulator Model GBT20 3/4″ NPT – 3/4” BSPP – Threaded The GBT20 regulators are available as springloaded back-pressure regulators The design pressures are 50,280 and 420 bar Material is Stainless Steel 316L Seatdiameter 9,5 mm – Cv 1.8 datasheet GBT20S Springloaded Back-Pressure Regulator Model GBT25 1″ NPT – 1” BSPP – Threaded The GBT25 regulators are available as springloaded back-pressure regulators The design pressures are 50,280 and 420 bar Material is Stainless Steel 316L Seatdiameter 12,5 mm – Cv 3.2 datasheet GBT25S Springloaded Back-Pressure Regulator Model GBT40 1 1/2″ NPT – 1 1/2” BSPP – Threaded The GBT40 regulators are available as springloaded back-pressure regulators The design pressures are 50 and 280 bar Material is Stainless Steel 316L Seatdiameter 16,5 mm – Cv 5.5 Model GBT50 2” BSPP – Threaded The GBT50 regulators are available as springloaded back-pressure regulators The design pressures are 50 and 280 bar Material is Stainless Steel 316L Seatdiameter 22,5 mm – Cv 10
Transcript
General Threaded Back-Pressure regulators
Model GBT8 1/4″ NPT – ThreadedThe GBT8 regulators are available as springloaded back-pressure regulatorsThe design pressures are 420 and 700 bar Material is Stainless Steel 316LSeatdiameter 2,5 mm
datasheet GBT8S Springloaded Pressure Regulator
Model GBT15 1/2″ NPT – 1/2” BSPP – ThreadedThe GBT15 regulators are available as springloaded back-pressure regulatorsThe design pressures are 50,280 and 420 bar Material is Stainless Steel 316LSeatdiameter 7 mm – Cv 1.0 and Cv 0.7
Model GBT20 3/4″ NPT – 3/4” BSPP – ThreadedThe GBT20 regulators are available as springloaded back-pressure regulatorsThe design pressures are 50,280 and 420 bar Material is Stainless Steel 316LSeatdiameter 9,5 mm – Cv 1.8
Model GBT25 1″ NPT – 1” BSPP – ThreadedThe GBT25 regulators are available as springloaded back-pressure regulatorsThe design pressures are 50,280 and 420 bar Material is Stainless Steel 316LSeatdiameter 12,5 mm – Cv 3.2
Model GBT40 1 1/2″ NPT – 1 1/2” BSPP – ThreadedThe GBT40 regulators are available as springloaded back-pressure regulatorsThe design pressures are 50 and 280 bar Material is Stainless Steel 316LSeatdiameter 16,5 mm – Cv 5.5
Model GBT50 2” BSPP – ThreadedThe GBT50 regulators are available as springloaded back-pressure regulatorsThe design pressures are 50 and 280 bar Material is Stainless Steel 316LSeatdiameter 22,5 mm – Cv 10
page 1 / 4 Revision 1611a
www.dutchregulators.com
Springloaded Back-Pressure Regulator Model – GBT8S
Description The GBT8S springloaded back-pressure regulator controls the supply pressure on the inletside. When the supply pressure rises above the setpressure, the fluid starts flowing to the outletside.
Specifications Inlet pressure 420 or 700 bar Adjustable 0-700 bar - 6 pressure ranges Connections 1/4" NPT Seatdiameter 2,5 mm Cv / Kv Cv 0.1 / Kv 0.08
Fluids This back-pressure regulator is suitable for gases and liquids.
Materials The regulator is made out of barstock stainless steel material.
Body ss 316L Springhousing ss 316L Valve ss 316L Seat PCTFE or PEEK Valve spring ss 302 Setspring ss 302 O-rings NBR, FKM or EPDM
Other materials available on request.
All metal parts are marked with a traceable batch number. Material certificates are available on request.
Technical details • all parts cleaned and degreased• leak-tight seat design• all regulators tested before delivery
Standards • EN 12516 - design • EN 12266-1 - testing • PED 2014/68/EU - SEP (article 4, paragraph 3)
• ATEX 94/9/EC - II 2G
158
56 mm
Ø59
17
page 2 / 4 Revision 1611a
www.dutchregulators.com
Springloaded Back-Pressure Regulator Model – GBT8S
Options Many options are available. The most requested options are mentioned below. Materials Regulators can be produced in higher graded materials than stainless steel 316L. Seals
Regulators can be equipped with FFKM + PTFE seals. Other compounds for higher or lower temperatures are available. NACE - MR 0175
All wetted parts of the regulators can be supplied according to NACE MR 0175, including Inconel X750 valvespring and a NACE report.
Spare parts Spare parts kits are available for the regulator. Mention the serial number in case you need spare parts for existing regulators.
Dependency A character of the regulator is “dependency”. The set-pressure will change, when you have a changing outletpressure. Dependency ratios are listed below. • range 0-20 bar - 1:100 • range 0-40 bar - 1:100 • range 0-100 bar - 1:40 • range 0-280 bar - 1:14 • range 0-420 bar - 1:10 • range 0-700 bar - 1:6
Flow The regulator has good flow performance over the complete range of pressures. Ask for advice if this regulator is the best choice for your application.
Adjusting the regulator The regulator comes standard with a knob. The threadpiece below the knob is designed for frequent adjustment.
Regulators that have a fixed setpoint, can be equipped with a locking cap.
page 3 / 4 Revision 1611a
www.dutchregulators.com
Springloaded Back-Pressure Regulator Model – GBT8S
Internals The internals of the regulator are important for the performance. The different internals are mentioned below. Piston sensing
Piston sensed for all pressure ranges. Plastic seated
PCTFE is recommended because it seals easy. PEEK is recommended for liquid applications.
Gaugeports The regulator has standard two 1/4" NPT gaugeports to measure the inlet and outletpressure.
Additional gaugeports not available for model GBT8S.
Gauges Regulators can be supplied with gauges. Below ranges are available: 0-4 bar / 0-10 bar / 0-25 bar / 0-60 bar / 0-160 bar / 0-400 bar / 0-600 bar • case diameter 63 mm • internals ss 316 • bottom connection 1/4” NPT
Mounting The regulator can be mounted in every position (horizontal / vertical). The bottom of the regulator has two mounting holes M5 with 5 mm thread and a C-C distance of 22 mm. Panel mounting
Panel mount ring available for mounting in a panel.
Section view
Section view of:
GBT8S-420N280-SSKN
Topview
page 4 / 4 Revision 1611a
www.dutchregulators.com
Springloaded Back-Pressure Regulator Model – GBT8S
Connections The regulator has threaded connections, designed for compression fittings. Line connections NPT threads according to ANSI B1.20.1
Design pressures The design pressure applies for inlet and outletside.
Seat materials The seat materials are related to the control ranges. PCTFE or PEEK control range up to 420 bar PEEK control range above 420 bar
Temperature The general temperature range of the regulator is -50 / 200 °C, but is often limited due to the used sealing materials. PCTFE seat - 50 / 60 °C PEEK seat - 50 / 200 °C NBR seals - 35 / 130 °C FKM seals - 20 / 200 °C EPDM seals - 50 / 120 °C
Typenumber explanation Example : GBT8S - 420N280 - SSKN
model design pressure connections adjustable material seat seals options
GBT8S
420
700
: 420 bar
: 700 bar
N
: 1/4" NPT
20
40
100
280
420
700
: 0-20 bar
: 0-40 bar
: 0-100 bar
: 0-280 bar
: 0-420 bar
: 0-700 bar
SS
SS 316L
K
P
PCTFE
kel-f
PEEK
N
V
E
NBR
nitrile
FKM
viton
EPDM
L
xx
locking cap
code for
special option
All regulators are marked with a typenumber, a drawingnumber and a unique serialnumber. Dutch Regulators stores the exact configuration of the regulator in the serialnumber.
page 1 / 4 Revision 1611a
www.dutchregulators.com
Springloaded Back-Pressure Regulator Model – GBT15S-50
Description The GBT15S springloaded back-pressure regulator
controls the supply pressure on the inletside. When the supply pressure rises above the setpressure,
the fluid starts flowing to the outletside.
Specifications Inlet pressure 50 bar Adjustable 0-50 bar - 4 pressure ranges
Connections 1/2" NPT or BSPP Seatdiameter 7 mm
Cv / Kv Cv 1.0 / Kv 0.85
Fluids This back-pressure regulator is suitable for gases and liquids.
Materials The regulator is made out of barstock stainless steel material.
Body ss 316L
Springhousing ss 316L
Valve ss 316L Seat NBR, FKM or EPDM
Setspring ss 302 O-rings / diaphragm NBR, FKM or EPDM
Other materials available on request.
All metal parts are marked with a traceable batch number. Material certificates are available on request.
Technical details • all parts cleaned and degreased
• leak-tight seat design
• all regulators tested before delivery
Standards • EN 12516 - design
• EN 12266-1 - testing
• PED 2014/68/EU - SEP (article 4, paragraph 3)
• ATEX 94/9/EC - II 2G
37
Ø68
37
62
183
Ø73
page 2 / 4 Revision 1611a
www.dutchregulators.com
Springloaded Back-Pressure Regulator Model – GBT15S-50
Options Many options are available. The most requested
options are mentioned below.
Materials Regulators can be produced in higher graded materials
than stainless steel 316L.
Seals
Regulators can be equipped with FFKM + PTFE seals. Other compounds for higher or lower temperatures are
available.
NACE - MR 0175
All wetted parts of the regulators can be supplied according to NACE MR 0175, including a NACE report.
Spare parts Spare parts kits are available for the regulator. Mention
the serial number in case you need spare parts for existing regulators.
Dependency A character of the regulator is “dependency”.
The set-pressure will change, when you have a changing outletpressure.
Dependency ratios are listed below.
• range 0-3 bar - 1:30
• range 0-8 bar - 1:30
• range 0-20 bar - 1:30
• range 0-50 bar - 1:10
Flow The regulator has good flow performance over the complete range. Ask for advice if this regulator is the
best choice for your application.
Adjusting the regulator The regulator comes standard with a knob. The threadpiece below the knob is designed for
frequent adjustment.
Regulators that have a fixed setpoint, can be equipped with a locking cap.
page 3 / 4 Revision 1611a
www.dutchregulators.com
Springloaded Back-Pressure Regulator Model – GBT15S-50
Internals The internals of the regulator are important for the
performance. The different internals are mentioned below.
Diaphragm or piston sensing
Diaphragm sensed for pressure ranges
0-3 bar / 0-8 bar / 0-20 bar
Piston sensed for pressure range 0-50 bar
Rubber seated
A rubber seat is less sensitive to dirt.
Setspring
The setspring is produced according to our high quality specifications. The low spring rate ensures good
performance at high flow.
Gaugeports The regulator has standard one 1/4" NPT gaugeport to
measure the controlled setpressure.
Additional 1/4” NPT gaugeports are available, see option G1 and G2 below.
On request other gaugeport options available.
G1
G2
Standard Inlet gaugeport
Additional Inlet gaugeport
Additional Inlet and Outlet
gaugeport
Gauges Regulators can be supplied with gauges.
Below ranges are available:
0-4 bar / 0-10 bar / 0-25 bar / 0-60 bar
• case diameter 63 mm
• internals ss 316
• bottom connection 1/4” NPT
Mounting The regulator can be mounted in every position
(horizontal / vertical).
The bottom of the regulator
has two mounting holes M5 with 8 mm thread and a C-C
distance of 35 mm.
For regulators installed outdoors, make sure that rain
cannot enter the springhousing or mount it drainable.
Section view
Section view of:
GBT15S-50N8-SSNN
page 4 / 4 Revision 1611a
www.dutchregulators.com
Springloaded Back-Pressure Regulator Model – GBT15S-50
Connections The regulator has threaded connections, designed for
compression fittings.
Line connections NPT threads according to ANSI B1.20.1
BSPP threads according to ISO 228-1 BSPP ports according to ISO 1179-1
Springhousing connection
The springhousing has a 1/8” NPT connection.
This connection functions as breathing hole or could
be used to pipe away hazardous fluids. Do not plug the connection.
Design pressures The design pressure applies for inlet and outletside.
Temperature The general temperature range of the regulator is -50 / 200 °C, but is often limited due to the used
sealing materials.
NBR seat / seals - 35 / 130 °C
FKM seat / seals - 20 / 200 °C EPDM seat / seals - 50 / 120 °C
Typenumber explanation
Example : GBT15S - 50N8 - SSNN
model design pressure connections adjustable material seat seals options
GBT15S
50
: 50 bar
N
B
: 1/2" NPT
: 1/2” BSPP
3
8
20
50
: 0-3 bar
: 0-8 bar
: 0-20 bar
: 0-50 bar
SS
SS 316L
N
V
E
NBR
nitrile
FKM
viton
EPDM
N
V
E
NBR
nitrile
FKM
viton
EPDM
G1
G2
L
xx
one extra
gaugeport
two extra
gaugeports
locking cap
codes for
special option
All regulators are marked with a typenumber, a drawingnumber and a unique serialnumber. Dutch Regulators
stores the exact configuration of the regulator in the serialnumber.
page 1 / 4 Revision 1611a
www.dutchregulators.com
Springloaded Back-Pressure Regulator Model – GBT15S-420
Description The GBT15S springloaded back-pressure regulator
controls the supply pressure on the inletside. When the supply pressure rises above the setpressure,
the fluid starts flowing to the outletside.
Specifications Inlet pressure 280 or 420 bar Adjustable 0-420 bar - 7 pressure ranges
Connections 1/2" NPT or BSPP Seatdiameter 7 mm
Cv / Kv Cv 0.7 / Kv 0.6
Fluids This back-pressure regulator is suitable for gases and liquids.
Materials The regulator is made out of barstock stainless steel material.
Body ss 316L
Springhousing ss 316L
Valve ss 316L Seat PCTFE, PEEK or rubber
Valve spring ss 316 Setspring ss 302
O-rings / diaphragm NBR, FKM or EPDM
Other materials available on request.
All metal parts are marked with a traceable batch
number. Material certificates are available on request.
Technical details • all parts cleaned and degreased
• leak-tight seat design
• all regulators tested before delivery
Standards • EN 12516 - design
• EN 12266-1 - testing
• PED 2014/68/EU - SEP (article 4, paragraph 3)
• ATEX 94/9/EC - II 2G
37
Ø68
37
62
191
Ø73
page 2 / 4 Revision 1611a
www.dutchregulators.com
Springloaded Back-Pressure Regulator Model – GBT15S-420
Options Many options are available. The most requested
options are mentioned below.
Materials Regulators can be produced in higher graded materials
than stainless steel 316L.
Seals
Regulators can be equipped with FFKM + PTFE seals. Other compounds for higher or lower temperatures are
available.
NACE - MR 0175
All wetted parts of the regulators can be supplied according to NACE MR 0175, including Inconel X750
valvespring and a NACE report.
Spare parts Spare parts kits are available for the regulator. Mention
the serial number in case you need spare parts for existing regulators.
Dependency A character of the regulator is “dependency”.
The set-pressure will change, when you have a changing outletpressure.
Dependency ratios are listed below.
• range 0-3 bar - 1:30
• range 0-8 bar - 1:30
• range 0-20 bar - 1:30
• range 0-50 bar - 1:10
• range 0-100 bar - 1:35
• range 0-280 bar - 1:13
• range 0-420 bar - 1:7
Flow The regulator has good flow performance over the complete range. Ask for advice if this regulator is the
best choice for your application.
Adjusting the regulator The regulator comes standard with a knob. The threadpiece below the knob is designed for
frequent adjustment.
Regulators that have a fixed setpoint, can be equipped with a locking cap.
page 3 / 4 Revision 1611a
www.dutchregulators.com
Springloaded Back-Pressure Regulator Model – GBT15S-420
Internals The internals of the regulator are important for the
performance. The different internals are mentioned below.
Diaphragm or piston sensing
Diaphragm sensed for pressure ranges
0-3 bar / 0-8 bar / 0-20 bar
Piston sensed for pressure ranges 0-50 bar / 0-100 bar / 0-280 bar / 0-420 bar
Rubber or plastic seated
Rubber seats for control ranges up to 50 bar.
A rubber seat is less sensitive to dirt.
Plastic seats for control ranges above 50 bar. PCTFE recommended and seals easy.
PEEK recommended for liquid and high temperatures.
Setspring
The setspring is produced according to our high quality specifications. The low spring rate ensures good
performance at high flow.
Gaugeports The regulator has standard one 1/4" NPT gaugeport to
measure the controlled setpressure.
Additional 1/4” NPT gaugeports are available, see option G1 and G2 below.
On request other gaugeport options available
G1
G2
Standard Inlet gaugeport
Additional Inlet gaugeport
Additional Inlet and Outlet
gaugeport
Gauges Regulators can be supplied with gauges.
Below ranges are available:
0-4 bar / 0-10 bar / 0-25 bar / 0-60 bar / 0-160 bar /
0-400 bar / 0-600 bar
• case diameter 63 mm
• internals ss 316
• bottom connection 1/4” NPT
Mounting The regulator can be mounted in every position
(horizontal / vertical).
The bottom of the regulator has two mounting holes M5
with 8 mm thread and a C-C
distance of 35 mm.
For regulators installed outdoors, make sure that rain
cannot enter the springhousing or mount it drainable.
Section view
Section view of:
GBT15S-280N20-SSNN
Section view of:
GBT15S-420N280-SSPV
page 4 / 4 Revision 1611a
www.dutchregulators.com
Springloaded Back-Pressure Regulator Model – GBT15S-420
Connections The regulator has threaded connections, designed for
compression fittings.
Line connections NPT threads according to ANSI B1.20.1
BSPP threads according to ISO 228-1 BSPP ports according to ISO 1179-1
Springhousing connection
The springhousing has a 1/8” NPT connection.
This connection functions as breathing hole or could
be used to pipe away hazardous fluids. Do not plug the connection.
Design pressures The design pressure applies for inlet and outletside.
Seat materials The seat materials are related to the control ranges.
NBR, FKM or EPDM control range up to 50 bar
PCTFE or PEEK control range above 50 bar
Depending on temperature or special wishes, the seat material could be different as mentioned above.
Temperature The general temperature range of the regulator is
-50 / 200 °C, but is often limited due to the used sealing materials.
PCTFE seat - 50 / 60 °C PEEK seat - 50 / 200 °C
NBR seat / seals - 35 / 130 °C FKM seat / seals - 20 / 200 °C
EPDM seat / seals - 50 / 120 °C
Typenumber explanation
Example : GBT15S - 420N280 - SSPV
model design pressure connections adjustable material seat seals options
GBT15S
280
420
: 280 bar
: 420 bar
N
B
: 1/2" NPT
: 1/2” BSPP
3
8
20
50
100
280
420
: 0-3 bar
: 0-8 bar
: 0-20 bar
: 0-50 bar
: 0-100 bar
: 0-280 bar
: 0-420 bar
SS
SS 316L
N
V
E
K
P
NBR
nitrile
FKM
viton
EPDM
PCTFE
kel-f
PEEK
N
V
E
NBR
nitrile
FKM
viton
EPDM
G1
G2
L
xx
one extra
gaugeport
two extra
gaugeports
locking cap
codes for
special option
All regulators are marked with a typenumber, a drawingnumber and a unique serialnumber.
Dutch Regulators stores the exact configuration of the regulator in the serialnumber.
page 1 / 4 Revision 1611a
www.dutchregulators.com
Springloaded Back-Pressure Regulator Model – GBT20S
Description The GBT20S springloaded back-pressure regulator
controls the supply pressure on the inletside. When the supply pressure rises above the setpressure,
the fluid starts flowing to the outletside.
Specifications Inlet pressure 50, 280 or 420 bar Adjustable 0-420 bar - 7 pressure ranges
Connections 3/4" NPT or BSPP Seatdiameter 9,5 mm
Cv / Kv Cv 1.8 / Kv 1.5
Fluids This back-pressure regulator is suitable for gases and liquids.
Materials The regulator is made out of barstock stainless steel material.
Body ss 316L
Springhousing ss 316L
Valve ss 316L Seat PCTFE, PEEK or rubber
Valve spring ss 316 Setspring ss 302
O-rings / diaphragm NBR, FKM or EPDM
Other materials available on request.
All metal parts are marked with a traceable batch
number. Material certificates are available on request.
Technical details • all parts cleaned and degreased
• leak-tight seat design
• all regulators tested before delivery
Standards • EN 12516 - design
• EN 12266-1 - testing
• PED 2014/68/EU - SEP (article 4, paragraph 3)
• ATEX 94/9/EC - II 2G
76
Ø55
45
Ø85
54
234
page 2 / 4 Revision 1611a
www.dutchregulators.com
Springloaded Back-Pressure Regulator Model – GBT20S
Options Many options are available. The most requested
options are mentioned below.
Materials Regulators can be produced in higher graded materials
than stainless steel 316L.
Seals
Regulators can be equipped with FFKM + PTFE seals. Other compounds for higher or lower temperatures are
available.
NACE - MR 0175
All wetted parts of the regulators can be supplied according to NACE MR 0175, including Inconel X750
valvespring and a NACE report.
Spare parts Spare parts kits are available for the regulator. Mention
the serial number in case you need spare parts for existing regulators.
Dependency A character of the regulator is “dependency”.
The set-pressure will change, when you have a changing outletpressure.
Dependency ratios are listed below.
• range 0-3 bar - 1:20
• range 0-8 bar - 1:20
• range 0-20 bar - 1:20
• range 0-50 bar - 1:8
• range 0-100 bar - 1:35
• range 0-280 bar - 1:12
• range 0-420 bar - 1:9
Flow The regulator has good flow performance over the complete range. Ask for advice if this regulator is the
best choice for your application.
Adjusting the regulator The regulator comes standard with a knob. The threadpiece below the knob is designed for
frequent adjustment.
Regulators that have a fixed setpoint, can be equipped with a locking cap.
page 3 / 4 Revision 1611a
www.dutchregulators.com
Springloaded Back-Pressure Regulator Model – GBT20S
Internals The internals of the regulator are important for the
performance. The different internals are mentioned below.
Diaphragm or piston sensing
Diaphragm sensed for pressure ranges
0-3 bar / 0-8 bar / 0-20 bar
Piston sensed for pressure ranges 0-50 bar / 0-100 bar / 0-280 bar / 0-420 bar
Rubber or plastic seated
Rubber seats for control ranges up to 50 bar.
A rubber seat is less sensitive to dirt.
Plastic seats for control ranges above 50 bar. PCTFE recommended and seals easy.
PEEK recommended for liquid and high temperatures.
Setspring
The setspring is produced according to our high quality specifications. The low spring rate ensures good
performance at high flow.
Gaugeports The regulator has standard one 1/4" NPT gaugeport to
measure the controlled setpressure.
Additional 1/4” NPT gaugeports are available, see option G1 and G2 below.
On request other gaugeport options available.
G1
G2
Standard Inlet gaugeport
Additional Inlet gaugeport
Additional Inlet and Outlet
gaugeport
Gauges Regulators can be supplied with gauges.
Below ranges are available:
0-4 bar / 0-10 bar / 0-25 bar / 0-60 bar / 0-160 bar /
0-400 bar / 0-600 bar
• case diameter 63 mm
• internals ss 316
• bottom connection 1/4” NPT
Mounting The regulator can be mounted in every position
(horizontal / vertical).
The bottom of the regulator has two mounting holes M6
with 8 mm thread and a C-C
distance of 45 mm.
For regulators installed outdoors, make sure that rain
cannot enter the springhousing or mount it drainable.
Section view
Section view of:
GBT20S-50N20-SSKN-L
Section view of:
GBT20S-420N100-SSPV
page 4 / 4 Revision 1611a
www.dutchregulators.com
Springloaded Back-Pressure Regulator Model – GBT20S
Connections The regulator has threaded connections, designed for
compression fittings.
Line connections NPT threads according to ANSI B1.20.1
BSPP threads according to ISO 228-1 BSPP ports according to ISO 1179-1
Springhousing connection
The springhousing has a 1/8” NPT connection.
This connection functions as breathing hole or could
be used to pipe away hazardous fluids. Do not plug the connection.
Design pressures The design pressure applies for inlet and outletside.
Seat materials The seat materials are related to the control ranges.
NBR, FKM or EPDM control range up to 50 bar
PCTFE or PEEK control range above 50 bar
Depending on temperature or special wishes, the seat material could be different as mentioned above.
Temperature The general temperature range of the regulator is
-50 / 200 °C, but is often limited due to the used sealing materials.
PCTFE seat - 50 / 60 °C PEEK seat - 50 / 200 °C
NBR seat / seals - 35 / 130 °C FKM seat / seals - 20 / 200 °C
EPDM seat / seals - 50 / 120 °C
Typenumber explanation
Example : GBT20S - 280N100 - SSKN
model design pressure connections adjustable material seat seals options
GBT20S
50
280
420
: 50 bar
: 280 bar
: 420 bar
N
B
: 3/4" NPT
: 3/4” BSPP
3
8
20
50
100
280
420
: 0-3 bar
: 0-8 bar
: 0-20 bar
: 0-50 bar
: 0-100 bar
: 0-280 bar
: 0-420 bar
SS
SS 316L
N
V
E
K
P
NBR
nitrile
FKM
viton
EPDM
PCTFE
kel-f
PEEK
N
V
E
NBR
nitrile
FKM
viton
EPDM
G1
G2
L
xx
one extra
gaugeport
two extra
gaugeports
locking cap
codes for
special option
All regulators are marked with a typenumber, a drawingnumber and a unique serialnumber.
Dutch Regulators stores the exact configuration of the regulator in the serialnumber.
page 1 / 4 Revision 1611a
www.dutchregulators.com
Springloaded Back-Pressure Regulator Model – GBT25S
Description The GBT25S springloaded back-pressure regulator
controls the supply pressure on the inletside. When the supply pressure rises above the setpressure,
the fluid starts flowing to the outletside.
Specifications Inlet pressure 50, 280 or 420 bar Adjustable 0-420 bar - 7 pressure ranges
Connections 1” NPT or BSPP Seatdiameter 12,5 mm
Cv / Kv Cv 3.2 / Kv 2.7
Fluids This back-pressure regulator is suitable for gases and liquids.
Materials The regulator is made out of barstock stainless steel material.
Body ss 316L
Springhousing ss 316L
Valve ss 316L Seat PCTFE, PEEK or rubber
Valve spring ss 316 Setspring ss 302
O-rings / diaphragm NBR, FKM or EPDM
Other materials available on request.
All metal parts are marked with a traceable batch
number. Material certificates are available on request.
Technical details • all parts cleaned and degreased
• leak-tight seat design
• all regulators tested before delivery
Standards • EN 12516 - design
• EN 12266-1 - testing
• PED 2014/68/EU - SEP (article 4, paragraph 3)
• ATEX 94/9/EC - II 2G
51
Ø100
59
88
264
page 2 / 4 Revision 1611a
www.dutchregulators.com
Springloaded Back-Pressure Regulator Model – GBT25S
Options Many options are available. The most requested
options are mentioned below.
Materials Regulators can be produced in higher graded materials
than stainless steel 316L.
Seals
Regulators can be equipped with FFKM + PTFE seals. Other compounds for higher or lower temperatures are
available.
NACE - MR 0175
All wetted parts of the regulators can be supplied according to NACE MR 0175, including Inconel X750
valvespring and a NACE report.
Spare parts Spare parts kits are available for the regulator. Mention
the serial number in case you need spare parts for existing regulators.
Dependency A character of the regulator is “dependency”.
The set-pressure will change, when you have a changing outletpressure.
Dependency ratios are listed below.
• range 0-3 bar - 1:20
• range 0-8 bar - 1:20
• range 0-20 bar - 1:13
• range 0-50 bar - 1:50
• range 0-100 bar - 1:25
• range 0-280 bar - 1:9
• range 0-420 bar - 1:7
Flow The regulator has good flow performance over the
complete range. Ask for advice if this regulator is the best choice for your application.
Adjusting the regulator The regulator comes standard with a setscrew.
Regulators that have a fixed setpoint, can be equipped with a locking cap.
page 3 / 4 Revision 1611a
www.dutchregulators.com
Springloaded Back-Pressure Regulator Model – GBT25S
Internals The internals of the regulator are important for the
performance. The different internals are mentioned below.
Diaphragm or piston sensing
Diaphragm sensed for pressure ranges
0-3 bar / 0-8 bar / 0-20 bar
Piston sensed for pressure ranges 0-50 bar / 0-100 bar / 0-280 bar / 0-420 bar
Rubber or plastic seated
Rubber seats for control ranges up to 20 bar.
A rubber seat is less sensitive to dirt.
Plastic seats for control ranges above 20 bar. PCTFE recommended and seals easy.
PEEK recommended for liquid and high temperatures.
Setspring
The setspring is produced according to our high quality specifications. The low spring rate ensures good
performance at high flow.
Gaugeports The regulator has standard one 1/4" NPT gaugeport to
measure the controlled setpressure.
Additional 1/4” NPT gaugeports are available, see option G1 and G2 below.
On request other gaugeport options available.
G1 G2
Standard Inlet gaugeport
Additional Inlet gaugeport
Additional Inlet and Outlet
gaugeport
Gauges Regulators can be supplied with gauges.
Below ranges are available:
0-4 bar / 0-10 bar / 0-25 bar / 0-60 bar / 0-160 bar /
0-400 bar / 0-600 bar
• case diameter 63 mm
• internals ss 316
• bottom connection 1/4” NPT
Mounting The regulator can be mounted in every position
(horizontal / vertical).
The bottom of the regulator has two mounting holes M6
with 8 mm thread and a C-C
distance of 50 mm.
For regulators installed outdoors, make sure that rain
cannot enter the springhousing or mount it drainable.
Section view
Section view of:
GBT25S-420B280-SSKN
page 4 / 4 Revision 1611a
www.dutchregulators.com
Springloaded Back-Pressure Regulator Model – GBT25S
Connections The regulator has threaded connections, designed for
compression fittings.
Line connections NPT threads according to ANSI B1.20.1
BSPP threads according to ISO 228-1 BSPP ports according to ISO 1179-1
Springhousing connection
The springhousing has a 1/8” NPT connection.
This connection functions as breathing hole or could
be used to pipe away hazardous fluids. Do not plug the connection.
Design pressures The design pressure applies for inlet and outletside.
Seat materials The seat materials are related to the control ranges.
NBR, FKM or EPDM control range up to 20 bar
PCTFE or PEEK control range above 20 bar
Depending on temperature or special wishes, the seat material could be different as mentioned above.
Temperature The general temperature range of the regulator is
-50 / 200 °C, but is often limited due to the used sealing materials.
PCTFE seat - 50 / 60 °C PEEK seat - 50 / 200 °C
NBR seat / seals - 35 / 130 °C FKM seat / seals - 20 / 200 °C
EPDM seat / seals - 50 / 120 °C
Typenumber explanation
Example : GBT25S - 420N280 - SSPV
model design pressure connections adjustable material seat seals options
GBT25S
50
280
420
: 50 bar
: 280 bar
: 420 bar
N
B
: 1" NPT
: 1” BSPP
3
8
20
50
100
280
420
: 0-3 bar
: 0-8 bar
: 0-20 bar
: 0-50 bar
: 0-100 bar
: 0-280 bar
: 0-420 bar
SS
SS 316L
N
V
E
K
P
NBR
nitrile
FKM
viton
EPDM
PCTFE
kel-f
PEEK
N
V
E
NBR
nitrile
FKM
viton
EPDM
G1
G2
L
xx
one extra
gaugeport
two extra
gaugeports
locking cap
codes for
special option
All regulators are marked with a typenumber, a drawingnumber and a unique serialnumber.
Dutch Regulators stores the exact configuration of the regulator in the serialnumber.
![Chemical Resistance Guide EPDM & FKM[1]](https://static.documents.pub/doc/80x56/5524fe114a7959e0488b49f4/chemical-resistance-guide-epdm-fkm1.jpg)
