SINCE1958
8400 SERIESV A P O R V A L V E
P r e c i s e .
Q u a l i t y .
R e l i a b l e .
CELEBRATING
1958 - 2018
84
00The 8400 Series Vapor Valve provides pressure relief in
applications where hazardous vapors are to be piped away.
The Vapor Valve is a non-ASME code valve, and
specifically addresses low-pressure applications (below 15
PSIG). The valve uses a spring which directly opposes
system pressure. A fully-guided, stainless steel disc senses
the system pressure. If the system pressure ever reaches
the valve’s determined set pressure, the disc will release
from its seated position, venting system pressure.
Applications: Glycol Reboiler Safety Relief, BTEX Safety
Relief, Tank Blanketing, and Vessel Safety Relief below
15 PSIG
WWW.TAYLORVALVE.COM
BenefitsFEATURES
8400 SERIES VAPOR VALVE
Connection Size Threaded Connections Approximate WeightDimensions
Inlet1”
A B C
2”1”2”
Outlet InletMNPTMNPT
FNPTFNPT
Outlet inches1-7/82-5/16
4.311.6
1.955.26
mm47.6358.74
3-1/44-1/4
82.5107.95
9-13/1610-9/16
249268
inches mm inches mm lbs kg
Flow Diameter Pressure Range Standard Connections
Full BoreFull Bore
2.2 oz/in2 to 14.7 psig2.0 oz/in2 to 14.7 psig
1” MNPT x 1” FNPT2” MNPT x 2” FNPT
SPECIFICATIONS
DIMENSIONS & WEIGHTS
C
A
B
84
00
3
11
2
7
89
13
12
6
10
4
14
15
16
17
18
5
1
Part Description
Adjust Screw Assembly Zinc CSThread Protector Steel
302 SSLead Seal & Wire Steel“O” Ring FKMNut Steel SteelWasher Steel SteelThread Seal Steel & FKMSpring Keeper Steel 302 SSData Label 304 SSSpring 17-7 SS 17-7 SSBody ASTM A216 WCCDisc Assembly 316 SSStop Ring 316 SSDisc Seal FKMSeat 316 SSBody “O” Ring FKM
302 SS
MaterialStandard SS#
12345678910111213141516
Seat “O” Ring FKM17Seat Frame ASTM SA695 / SA3618
The information contained in these illustrations are the sole property of Taylor Valve Technology Inc. and any reproduction in part or whole without the written permission of Taylor Valve Technology Inc. is prohibited.
Alternate materials and connections available
BILL OF MATERIALS VALVE PART NUMBERS
SPRING PART NUMBERS
Example: 84-02030584 02 Blue 02 2” MNPT x 2” FNPT 05 316 SS
Color Size1” 2”
Brown 05-001615Blue 05-001115 05-001115
Yellow 05-001215 05-001215Green 05-001315
# Spring Size Body & Seat Frame Material
84
01 Brown 01 1” MNPT x 1” FNPT 03 Carbon Steel02 Blue 02 2” MNPT x 2” FNPT 05 316 SS03 Yellow04 Green
NOTE: Taylor Valve reserves the right to change product designs and specifications without notice.
TEL
FAX
WEB
Taylor Valve Technology8300 S.W. 8th StreetOklahoma City, Oklahoma 73128
SER
IES
SIZE
EXTR
A
Part Number Matrix
EF - BODY MATERIAL
EXTRA
03 Carbon Steel / FKM05 316 Stainless Steel / FKM13 Carbon Steel W/ EPDM35 Carbon Steel Body / 316 SS Seat Frame / FKM39 Stainless Steel / AFLAS43 Carbon Steel NACE / FKM45 Stainless Steel NACE / FKM49 Carbon Steel / AFLAS63 Carbon Steel / Kalrez65 Stainless Steel / Kalrez73 Carbon Steel / 316 SS Seat Frame / Kalrez
CD - SIZE00 1/2” MNPT X 1” FNPT01 1” MNPT X 1” FNPT02 2“ MNPT X 2” FNPT05 1-1/2” MNPT X 2”FNPT06 1” MNPT X 1-1/2” FNPT07 3/4” MNPT X 1” FNPTConsult factory or Taylor Valvefor flange options
-T 1/4” NPT Tap-LP *Low Pressure - below 12 oz. used on 2” only
AB - SPRING
84 -
41 1” 2.2 oz. - 4 psi.42 1” 4.1 - 10.0 psi.43 1” 10.1 - 15.0 psi.44 2” 2 oz. - 12 oz.*(See LP in Extra below)44 2“ 12.1 oz. - 1.9 psi.45 2” 2.0 - 5.0 psi.46 2” 5.1 - 15.0 psi.
A FEDCB Seperate or Combination
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