think…mercer first®
Features:
- The ORIGINAL "Auto Seat Technology"® Series.
- A low rated and fully guided spring allows for more consistent Set Pressures from pop to pop.
- Consistent Set Pressures allows for repeatable use without the need for excessive repairs or resetting.
- Open, Close, Seat and Seal™
- Fully guided disk for the proper alignment, opening and closing, and reseating of the valve.
- Mechanical Stop prevents wear on parts and controls valve lift.
- Pop Action relief allows the valve to go to full lift at Set Pressure. This helps with DOT regulated applications.
- Non-rising stems allowing valves to be installed in small areas.
- Sour Service Trim Available.
- Canadian Registration Number (CRN)
| Valve Size | 3⁄4"
(USC) | 3⁄4"
(SI) |
|---|---|---|
| Valve SizeAvailable Inlet Sizes | 3⁄4"
(USC)1 ½", 2" | 3⁄4"
(SI)DN 40, DN 50 |
| Valve SizeAvailable Outlet Size | 3⁄4"
(USC)2" NPT | 3⁄4"
(SI)DN 50 |
| Valve SizeInlet and Outlet Connection Types | 3⁄4"
(USC)Male NPT x Female NPT or Female NPT x Female NPT | 3⁄4"
(SI)Male NPT x Female NPT or Female NPT x Female NPT |
| Valve SizeOrifice Diameter | 3⁄4"
(USC)0.775 in | 3⁄4"
(SI)19.7 mm |
| Valve SizeActual Orifice Area | 3⁄4"
(USC)0.472 in2 | 3⁄4"
(SI)304.5 mm2 |
| Valve SizeAPI Orifice Area | 3⁄4"
(USC)0.503 in2 | 3⁄4"
(SI)324.5 mm2 |
| Valve SizeEquivalent Orifice Letter | 3⁄4"
(USC)G | 3⁄4"
(SI)G |
| Valve SizePressure Range | 3⁄4"
(USC)15 – 2000 psig | 3⁄4"
(SI)104 – 13789 kPa |
| Valve SizeStandard Temperature Range | 3⁄4"
(USC)-20°F to 400°F | 3⁄4"
(SI)-29°C to 204°C |
| Valve SizeASME Gas “Slope” | 3⁄4"
(USC)7.210 | 3⁄4"
(SI)7.210 |
| Valve SizeEquivalent Flow Coefficient Kd (Gas) | 3⁄4"
(USC)0.833 | 3⁄4"
(SI)0.833 |
| Valve SizeEquivalent Flow Coefficient Kd (Liquid) | 3⁄4"
(USC)0.712 | 3⁄4"
(SI)0.712 |
Mercer Valve Co., Inc. reserves the right to change product designs and specifications without notice.
8100 "G" | Part Number Selection
81 -
43
A
2
B
5
C
1
D
V
E
09
F
G1
G
1
H
I
A | INLET & OUTLET COMBINATION
(See Dimensions & Weights, below.)
B | ORIFICE SIZE
2 – ¾" DIAMETER ("G" ORIFICE)
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★ – FKM
T★ – PTFE
P – VIRGIN PEEK
B – BUNA-N
F | SPRING CODE
(Spring codes assigned by Mercer Valve.)
G | TRIM CODES
G1★ – GAS SERVICE (15-300 PSIG)
G2★ – GAS SERVICE (301-2000 PSIG)
L★ – LIQUID SERVICE (ALL PRESSURES)
N1★ – SOUR GAS SERVICE (15-300 PSIG)
N2★ – SOUR GAS SERVICE (301-2000 PSIG)
B★ – SOUR LIQUID SERVICE (ALL PRESSURES)
H | O-RING MATERIAL
1★ – FKM & BUNA-N (STANDARD)
2 – FKM 70 DURO
3 – FKM 90 DURO
4 – BUNA-N
9 – NEOPRENE
I | TWO-DIGIT "SPECIAL" CODE
(Two-digit special codes assigned by Mercer Valve, if applicable.)
★Standard Materials or Options.
| Inlet and Outlet Code | Inlet and Outlet Size (in) | Pressure Range1, 2 (psig) | Dimensions2
"A" x "B" x "C" (in ± .062) | Approximate Weight2
(lbs) |
|---|---|---|---|---|
| Inlet and Outlet Code33 | Inlet and Outlet Size (in)1 ½" FNPT x 2" FNPT | Pressure Range1, 2 (psig)15 to 900 | Dimensions2
"A" x "B" x "C" (in ± .062)4.673 x 2.312 x 10.298 | Approximate Weight2
(lbs)13 |
| Inlet and Outlet Code33☗ | Inlet and Outlet Size (in)1 ½" FNPT x 2" FNPT | Pressure Range1, 2 (psig)901 to 2000 | Dimensions2
"A" x "B" x "C" (in ± .062)4.673 x 2.312 x 12.153 | Approximate Weight2
(lbs) |
| Inlet and Outlet Code34★ | Inlet and Outlet Size (in)1 ½" MNPT x 2" FNPT | Pressure Range1, 2 (psig)2000 | Dimensions2
"A" x "B" x "C" (in ± .062) 4.423 x 2.312 x 10.048 | Approximate Weight2
(lbs)12 |
| Inlet and Outlet Code42 | Inlet and Outlet Size (in)2" FNPT x 2" FNPT | Pressure Range1, 2 (psig)2000 | Dimensions2
"A" x "B" x "C" (in ± .062)4.673 x 2.312 x 10.298 | Approximate Weight2
(lbs)12 |
| Inlet and Outlet Code43★ | Inlet and Outlet Size (in)2" MNPT x 2" FNPT | Pressure Range1, 2 (psig)2000 | Dimensions2
"A" x "B" x "C" (in ± .062)4.423 x 2.312 x 10.048 | Approximate Weight2
(lbs)12 |
1Pressure limit may be subject to system conditions and temperatures.
2Pressure limit, weight, and “C” dimension may vary with sour gas service and other options.
★Standard Materials or Options.
☗2″ Two piece body.
| Inlet and Outlet Code | Inlet and Outlet Size DN (mm) | Maximum Pressure Limit 1, 2 (kPa) | Dimensions 2
"A" x "B" x "C" (mm ± 1.6) | Approximate Weight 2
(kg) |
|---|---|---|---|---|
| Inlet and Outlet Code33☗ | Inlet and Outlet Size DN (mm)DN 40 x DN 50 | Maximum Pressure Limit 1, 2 (kPa)13789 | Dimensions 2
"A" x "B" x "C" (mm ± 1.6)117.5 x 60.3 x 261.9 | Approximate Weight 2
(kg)5.9 |
| Inlet and Outlet Code34★ | Inlet and Outlet Size DN (mm)DN 40 x DN 50 | Maximum Pressure Limit 1, 2 (kPa)13789 | Dimensions 2
"A" x "B" x "C" (mm ± 1.6)112.7 x 60.3 x 255.6 | Approximate Weight 2
(kg)5.4 |
| Inlet and Outlet Code42 | Inlet and Outlet Size DN (mm)DN 50 x DN 50 | Maximum Pressure Limit 1, 2 (kPa)13789 | Dimensions 2
"A" x "B" x "C" (mm ± 1.6)117.5 x 60.3 x 261.9 | Approximate Weight 2
(kg)5.4 |
| Inlet and Outlet Code43★ | Inlet and Outlet Size DN (mm)DN 50 x DN 50 | Maximum Pressure Limit 1, 2 (kPa)13789 | Dimensions 2
"A" x "B" x "C" (mm ± 1.6)112.7 x 60.3 x 255.6 | Approximate Weight 2
(kg)5.4 |
1Pressure limit may be subject to system conditions and temperatures.
2Pressure limit, weight, and “C” dimension may vary with sour gas service and other options.
★Standard Materials or Options.
☗2″ Two piece body.