8100 Threaded Specifications

Valve Size ½” ¾”
Orifice Diameter (in.) 0.520 0.775
API Orifice Area (sq. in.) 0.196 0.503
ASME Actual Orifice Area (sq. in.) 0.212 0.472
Equivalent Orifice Letter E G
Inlet Sizes Offered ¾”,1″ 1½”, 2″
Pressure Ranges (psig) 15-2400 15-2000
ASME Gas “Slope” 3.100 7.210
Equivalent Flow Coefficient “K” (Gas) 0.798 0.830

8100 Threaded Selection

Inlet/Outlet
P/N: Code
Valve Size Inlet and Outlet
Available Orifice Size
Maximum Pressure Limit
(psig) 1
Dimensions (in)
1/16 A x B x C
Approximate Weight
(lb)
12 ¾” MNPT x 1″ FNPT ½” Orifice 2400 3¼ x 1⅞ x 8 4.5
17 1″ MNPT x 1″ FNPT ½” Orifice 2400 3¼ x 1⅞ x 8 4.5
34 1½” MNPT x 2″ FNPT ¾” Orifice 2000 41⁄16 x 2⅜ x 101⁄16 11
43 2″ MNPT x 2″ FNPT ¾” Orifice 2000 47⁄16 x 2⅜ x 101⁄16 12
Notes:
1) System Conditions and Temperatures can limit the maximum pressure of the valve

8100 Series Selection Table

8100ProductNumberingKey
A INLET & OUTLET COMBINATION
(See Selection Table above)
B ORIFICE SIZE
1 – ½” DIAMETER
2 – ¾” DIAMETER
C INLET BASE & BODY MATERIAL
5 – CARBON STEEL / WCB CARBON STEEL
6 – 316 STAINLESS STEEL / WCB CARBON STEEL
D CAP TYPE
1 – CLOSED CAP
2 – OPEN LIFT LEVER
3 – CLOSED LIFT LEVER
E SEAT MATERIAL
V – FLUOROCARBON (FKM) 90 DUROMETER
T – 15% GLASSED FILLED PTFE
P – VIRGIN PEEK
F SPRING CODE
(ASSIGNED BY MERCER)
G TRIM CODES
G1 – GAS SERVICE (15-1225PSI : ½” ORIFICE , 15-520PSI : ¾” ORIFCE)
G2 – GAS SERVICE (1226-2400PSI : ½” ORIFICE , 521-2000PSI : ¾” ORIFICE)
N1 – SOUR GAS SERVICE (15-1225PSI : ½” ORIFICE , 15-520PSI : ¾” ORIFICE)
N2 – SOUR GAS SERVICE (1226-2400PSI : ½” ORIFICE , 521-2000PSI : ¾” ORIFICE)
H O-RING MATERIAL
1 – STANDARD O-RINGS (FKM & BUNA-N)
I 2- DIGIT “SPECIAL” CODE
(IF APPLICABLE ASSIGNED BY MERCER)