OPERATOR’S MANUAL 1/4” DIAPHRAGM PUMP (BA25XX-XXXX-X)
Model Description Chart
BP06XX-XXXX-X Porting Options
B-NPT
O-ring materials
1-NBR 4-PTFE(Cover）
Diaphragm Materials
9 - Santoprene® H - Hytre® T - PTFE
Ball Materials
9 - Santoprene® H - Hytre® T - PTFE P - UPE
Seat Material
P – Polypropylene
Wetted Material
PP – Polypropylene
Pump Data Max. Temperature Limits (Diaphragm/ball/sealed material)
Description Data Material Application temperature range
Porting size (inch) 1/4” POM 10°-180°F (-12°- 82°C)
Center body material PP Santoprene® -40°- 225°F (-40°- 107.2°C)
Max. air inlet pressure (Mpa) 0.60 PTFE 40°- 220°F (4.4°- 104°C)
Max. flow rate (lpm) 26.1 Nitrile 10°- 180°F (-12°- 82°C)
Max. dry suction (m) 3.5 FKM -0°- 392°F (-18°-200°C)
Displacement / cycle (L) 0.06 PVDF -20°-150°F (-12°- 93°C)
Max. Particle size (mm) 1.0 Hytrel® 10°-200°F (-28.9°- 65.5°C)
Noise level @70psi (dB) 68 Polypropylene 32°- 175°F (0 -79.4°C)
Weight (kg) Nylon -40°- 248°F (-40°- 120°C)
Polypropylene 1.3
BSK Fluid Technology LLC
Add: 3625 Aqua Spring Drive Plano, Tx75025 U.S.A
E-mail: [email protected]
http://www.bskfluid.com
PN 6461-7
Revised: 2017-6-6
Rev: C
6461-1 2 BSK Fluid Technology LLC
SAFETY AND MAINTANANCE INFORMATION
Operating and safety prevention
Read, understand and follow this information to avoid injury and property damage.
Do not exceed the maximum inlet air pressure as stated on the pump model plate.
The air inlet of the pump is connected to the air supply that has sufficient capacity and of which pressure conforms to the design
requirements.
The clean compressed air makes for the extension of the service life of the pump.
If the air supply line is a hard pipe, the short hose connecting the pump and the pipe can reduce vibration and twisting. (It is
recommended to reduce the pulse in the fluid with a use a surge tank or fluid buffers.)
The air intake pipe of the pump must be installed with the pressure regulating valve to ensure the air supply pressure doesn’t exceed the
specified range.,
Pumps’ air inlet should be installed a pressure regulating valve to make sure the supplied air pressure doesn’t exceed the limits.
Do not make your pumps working in the EXCESSIVE AIR PRESSURE in a long time. Can cause pump damage, personal injury or
property damage.
Make sure the hoses and other components can endure the fluid pressure of the pumps. Check all hoses for are not damage or worn. To
ensure that the distribution device is clean and reliable.
STATIC SPARK. Can cause explosion resulting in severe injury or death. Ground pump and pumping system.
Sparks can ignite flammable material and vapors.
Secure pump, connections and all contact points to avoid vibration and generation of contact or static spark.
To use the correct ventilation equipment..
To make flammable items away from heat, open flames and sparks.
When not in use, please close the container.
Pump exhaust may contain contaminants. Can cause severe injury. Pipe exhaust away from work area and personnel.
In the event of a diaphragm rupture material can be forced out of the air exhaust muffler.
Pipe the exhaust to a safe remote location when pumping hazardous or inflammable materials.
Use a grounded3/8”minimum i.d. hose between the pump and the muffler.
HAZARDOUS PRESSURE. Can result in serious injury or property damage. Do not service or clean pump, hoses or dispensing valve
while the system is pressurized. Disconnect air supply line and relieve pressure from the system by opening dispensing valve or device
and / or carefully and slowly loosening and removing outlet hose or piping from pump.
HAZARDOUSMATERIALS. Can cause serious injury or property damage. Do not attempt to return a pump to the factory or service
center that contains hazardous material. Safe handling practices must comply with local and national laws and safety code
requirements.
Obtain Material Safety Data Sheets on all materials from the supplier for proper handling instructions.
EXPLOSION HAZARD.Models containing aluminum wetted parts cannot be used with 1,1,1-trichloroethane, methylene chloride
or other halogenated hydrocarbon solvents which may react and explode.
Check pump motor section, fluid caps, manifolds and all wetted parts to assure compatibility before using with solvents of this type.
The pump should be placed close to the product as possible to shorten t the suction pipe and reduce the number of parts to the
greatest extent.
To extend the service life to diaphragm, we must to place the pump close to the pumped fluid as much as possible. When the inlet
pressure exceeds 10 feet (3 meters) of the fluid column, it is necessary to install a set of pressure relief and regulation devices to extend
the service life of diaphragm.
We must ensure the sealing of each adapter for the inlet and outlet pipes.
All the fasteners must be tightened once again prior to the use of the product to avoid the looseness that may arise out of the creep of
the seal components and effectively prevent the leakage of fluid or air.
Verify the chemical compatibility of the pump wetted parts and the substance being pumped, flushed or re-circulated. Chemical
BSK Fluid Technology LLC 3 6461-1
compatibility may change with temperature and concentration of the chemical(s) within the substances being pumped, flushed or
circulated. For specific fluid compatibility, consult the chemical manufacturer.
Maximum temperatures are based on mechanical stress only. Certain chemicals will significantly reduce maximum safe operating
temperature. Consult the chemical manufacturer for chemical compatibility and temperature limits.
Be certain all operators of this equipment have been trained for safe working practices, understand its limitations, and wear safety
goggles / equipment when required.
Do not use the pump for the structural support of the piping system. Be certain the system components are properly supported to
prevent stress on the pump parts.
Suction and discharge connections should be flexible connections (such as hose), not rigid piped, and should be compatible with the
substance being pumped.
Prevent unnecessary damage to the pump. Do not allow pump to operate when out of material for long periods of time.
It is a must to prevent unnecessary damage to the pump. If it has to lie idle for a long time, please clean it thoroughly after each use.
The product left in the pump will become dry or sticky on the pump, which will give rise to the diaphragm and valve problems prior to
the next start. At the freezing temperature, it is must to empty the pump completely under any circumstances after use.
General Description
The BSK diaphragm pump offers high volume delivery even at low air pressure and a broad range of material compatibility options
available. BSK pumps feature stall resistant design, modular air motor / fluid sections.
Air operated double diaphragm pumps utilize a pressure differential in the air chambers to alternately create suction and positive fluid
pressure in the fluid chambers, ball checks insure a positive flow of fluid.
Pump cycling will begin as air pressure is applied and it will continue to pump and keep up with the demand. It will build and maintain
line pressure and will stop cycling once maximum line pressure is reached (dispensing
device closed) and will resume pumping as needed.
Air and Lube Requirements
EXCESSIVE AIR PRESSURE. Can cause pump damage, personal injury or property damage.
A filter capable of filtering out particles larger than 50 microns should be used on the air supply. There is no lubrication required other
than the “O” ring lubricant which is applied during assembly or repair.
If lubricated air is present, make sure that it is compatible with the“O”rings and seals in the air motor section of the pump.
Operating Instructions
Always flush the pump with a solvent compatible with the material being pumped if the material being pumped is subject to “setting
up” when not in use for a period of time.
Disconnect the air supply from the pump if it is to be inactive for a few hours.
The outlet material volume is governed not only by the air supply but also by the material supply available at the inlet. The material
supply tubing should not be too small or restrictive. Be sure not to use hose which might collapse.
When the diaphragm pump is used in a forced-feed (flooded inlet) situation, it is recommended that a “Check Valve” be installed at the
air inlet.
Maintenance
Refer to the part views in the assembly chart for the parts’ number and name to understand the information of the part and service
kits.
Parts which marked with “△”, to prepare these parts in hand will help you save time for fast maintenance and reduce downtime.
Service kits are divided to service two separate diaphragm pump functions: Air section and fluid section. The fluid section is further
divided to match the material options for typical parts.
Provide a clean work surface to protect sensitive internal moving parts from contamination from dirt and foreign matter during
service disassembly and reassembly.
6461-1 4 BSK Fluid Technology LLC
Keep good records of service activity and include pump in preventive maintenance program.
Before disassembling, empty captured material in the outlet manifold by turning the pump upside down to drain material from the
pump.
Reassembly
All sealed parts and th·e connected positions need to be coated with grease.
All re-use sealed parts need to be checked if there has damage. If there has damage on the surface, please to use a new one.
The lip direction of the lip shape seal ring need to install to the directed direction on the chart.
Bolts on the fluid cap need to be fastened alternating to ensure the better sealing effect..
Trouble Shooting
1. Air exhaust has pumping product
Check if the diaphragm (B-07) be damaged
Check if the diaphragm bolts (B-10) loosening
2. The pumping product has air bubble
Check the suction pipe joints are well sealed
Check the suction pipe and fluid inlet manifold (B-02) are well sealed
Check the O-ring (B-06) between inlet manifold (B-02) and fluid cap (B-03) are well sealed
Check the tightness of diaphragm bolts (B-10)
3. Low output volume
Check the air supply
Check whether the inlet and outlet hose is blocked
Check the joint to the fluid inlet manifold (B-02) is sealed and not leakage
Check if the ball (B-04) stick to the ball seat (B-05) or ball seat (B-05) is not suitable
4. Air exhaust in the case of reciprocating motion stopping
Check the sealed ring (A-03)(A-05) at the main air valve
Check the sealed ring (A-24) at the pilot rod valve
Check the sealed ring (A-22) at the diaphragm rod
AIR MOTOR SECTION (BP06-P1)
PART LIST
Item Desc P/N Mtl Qty
Item Desc P/N Mtl Qty
A-01 Plug 6365 PP 1
A-14 Block 6366 D 1
A-02 O-ring 6222-12 B 1
A-15 Body 6350 PP 1
A-03 Y-ring 6221-6 B 1
A-16 Gasket 6371 B 1
A-04 Piston 6392 D 1
A-17 Nut 6231-4 SS 4
A-05 Y-ring 6221-5 B 1
A-18 Cover 6367 PP 1
A-06 Spool 6364 D 1
A-19 Muffler 6447 PP 1
A-07 Washer 6329-1 SS 4
A-20 Washer 6357 D 2
Material Code: SS= Stainless Steel
PP= Polypropylene B=NBR
AL= Aluminum Alloy Ce=Ceramic D=POM
CS=Carbon steel U=Urethane
A-08 Bolt 6230-11 SS 4
A-21 Sleeve 6359 PP 2
A-09 Gasket 6369 B 2
A-22 Y-ring 6221-1 B 2
A-10 Plate 6306 Ce 2
A-23 Rod 6358 CS 1
A-11 Insert 6307 Ce 2
A-24 O-ring 6474-1 U 2
A-12 Housing 6351 PP 1
A-25 Rod 6363 D 1
A-13 Gasket 6355 B 1
BSK Fluid Technology LLC 5 6461-1
Air Motor service
Distribution Valve Disassembly
Remove screw (A-08). Remove housing assembly (A-12).Remove gasket (A-09) (A-13).Remove plate(A-10) and insert(A-11) from
housing(A-07) and center body (A-15)
Distribution Valve Reassembly
Inspect and replace old parts with new parts as necessary.
Install insert (A-11) into center body (A-15). Which end side with fit face to housing (A-12).Install plate (A-10), which smooth side face to
center body (A-15). Install insert (A-11) into housing (A-12). Which end side with fit face to center body (A-15).Install plate (A-10), which
smooth side face to housing (A-12).
Install gasket (A-09)(A-13) and housing assembly (A-12) to center body (A-15).
Major Valve Disassembly
Remove plug (A-01).Remove piston (A-04), spool (A-06). Remove O-ring (A-02), Y-ring (A-03), Y-ring (A-05)
Major Valve reassembly
Inspect and replace old parts with new parts as necessary. Lubricate O-ring, Y-ring and moving surface.
Install Y-ring (A-05) onto spool (A-06). Which lip face to small end of spool. Then push them into housing (A-12)
Install Y-ring (A-03) onto piston (A-04). Press them into housing (A-12). The Y-ring lip face to plug (A-01)
Install O-ring (A-02) onto plug (A-01). Then push them together into housing (A-12).
Pilot Valve Disassembly
Remove block (A-14)
Remove rod (A-25). Remove O-ring (A-24) from rod (A-25)
By the way, remove sleeve (A-21) and Y-ring (A-22) from center body (A-15)
Pilot Valve Reassembly
Inspect and replace old parts with new parts as necessary. Lubricate O-ring, Y-ring and moving surface.
Install Y-ring (A-22) into center body (A-15). Which lip opposite center body (A-15). Then press in sleeve (A-21)
Install O-ring (A-24) onto rod (A-25). Push them together into center body (A-15)
Install block (A-14)
Torque Requirements:
A-08:1.8-3.0 Nm
Item with “△” is spare
part. Keep them on hand
in addition for fast repair
and reduction of down
time. Those items are
included in service kit
6395-BP06-P1
6461-1 6 BSK Fluid Technology LLC
FLUID SECTION
Torque Requirements:
B-10: 7.0-8.0 Nm
B-12, B-15: 7.0-8.0 Nm
Item with “△” is spare part. Keep them
on hand in addition for fast repair and
reduction of down time. Those items are
included in service kit 6396-X (X-pump
model, for example: BP06PP-PTT4-B)
Wet Section Service
Disassembly
Remove manifold (B-02),O-ring (B-06),seat (B-05),ball (B-04).
Remove manifold (B-01),O-ring (B-06),seat (B-05),ball (B-04).
Remove fluid cap (B-03)
Remove screw (B-10), diaphragm (B-07), washer (A-20), rod (A-23)
Remove sleeve (A-21) and Y-ring (A-22)
Reassembly
Reassemble in reverse order.
Inspect and replace old parts with new parts as necessary.
Lubricate Y-ring (A-22) and rod (A-23)
Apply Loctite 243 to threads of screw (B-10)
BSK Fluid Technology LLC 7 6461-1
Fluid cap/Manifold/Hardware
Material Code
PP-Polypropylene SS= Stainless Steel Sp=Santoprene®
T=PTFE T/c= PTFE(Cover） B= Nitrile Hy=Hytrel®
P=UPE
“B-05” Seat Options
Par
t N
um
ber
qu
anti
ty
Mat
eria
l
BP
06
XX
-PX
XX
-X
6378-1 4 PP Y
“B-04”Ball Options
Par
t N
um
ber
qu
anti
ty
Mat
eria
l
BP
06
XX
-XTX
X-X
BP
06
XX
-XP
XX
-X
BP
06
XX
-X9
XX
-X
BP
06
XX
-XH
XX
-X
6370 4 T Y
6370-1 4 P
Y
6377-1 4 Sp Y
6377-2 4 Hy
Y
Diaphragm Options
Item
Par
t N
um
ber
qu
anti
ty
Mat
eria
l
BP
06
XX
-XX
TX-X
BP
06
XX
-XX
9X
-X
BP
06
XX
-XX
HX
-X
B-07 6361 2 T Y
B-07 6360-1 2 Sp Y
B-07 6360-2 2 Hy
Y
“B-06” O-ring Options
Par
t N
um
ber
qu
anti
ty
Mat
eria
l
BP
06
XX
-XX
X4-
X
BP
06
XX
-XX
X1-
X
6222-10 4 B Y
6281-2 4 T/c Y
Item
Des
crip
tio
n
Par
t N
um
ber
qu
anti
ty
Mat
eria
l
BP
06
PP
-XX
XX
-B
B-01 Manifold 6353-1 1 PP Y
B-02 Manifold 6354-1 1 PP Y
B-03 Fluid Cap 6352-1 2 PP Y
B-10 Screw 6356-1 2 PP Y
B-11 Screw 6379 8 SS Y
B-12 Nut 6231-4 12 SS Y
B-13 Screw 6379 12 SS Y
B-14 Washer 6329-5 20 SS Y
B-15 Nut 6231-4 8 SS Y
6461-1 8 BSK Fluid Technology LLC
Dimensional Data
A AIR INLET 1/4 NPT
B AIR EXHAUST 1/4 NPT
C INLET 1/4 NPT
D OUTLET 1/4 NPT
TYPICAL PUMP CONNECTION TYPICAL PUMP APPLICATION
INJECTIONair exhaust
air
inlet
SUCTION
SUBMARINE
