think…mercer first®
Features:
- Designed with “Auto Seat Technology”®
- 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 stem allows valves to be installed in small spaces.
- Sour Service Trim Available.
- Canadian Registration Number (CRN)
| Valve Size | ½"
(USC) | ½"
(SI) |
|---|---|---|
| Valve SizeAvailable Inlet Sizes | ½"
(USC)¾", 1" | ½"
(SI)DN 20, DN 25 |
| Valve SizeAvailable Outlet Size | ½"
(USC)1" | ½"
(SI)DN 25 |
| Valve SizeInlet and Outlet Connection Types | ½"
(USC)Male NPT x Female NPT or Female NPT x Female NPT | ½"
(SI)Male NPT x Female NPT or Female NPT x Female NPT |
| Valve SizeOrifice Diameter | ½"
(USC)0.520 in | ½"
(SI)13.2 mm |
| Valve SizeActual Orifice Area | ½"
(USC)0.212 in2 | ½"
(SI)136.8 mm2 |
| Valve SizeAPI Orifice Area | ½"
(USC)0.196 in2 | ½"
(SI)126.5 mm2 |
| Valve SizeEquivalent Orifice Letter | ½"
(USC)E | ½"
(SI)E |
| Valve SizePressure Range | ½"
(USC)15 – 1650 psig | ½"
(SI)104 – 11376 kPa |
| Valve SizeStandard Temperature Range | ½"
(USC)-20°F to 400°F | ½"
(SI)-29°C to 104°C |
| Valve SizeASME Gas "Slope" | ½"
(USC)3.37 | ½"
(SI)3.37 |
| Valve SizeEquivalent Flow Coefficient Kd (Gas) | ½"
(USC)0.867 | ½"
(SI)0.867 |
Mercer Valve Co., Inc. reserves the right to change product designs and specifications without notice.
8500 "E" | Part Number Selection
85 -
17
A
1
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
1 – ½" DIAMETER ("E" 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
Y – VESPEL®
F | SPRING CODE
(Spring codes assigned by Mercer Valve.)
G | TRIM CODES
G1★ – GAS SERVICE
N1★ – SOUR GAS SERVICE (15-1200 PSIG)
N2★ – SOUR GAS SERVICE (1201-1650 PSIG)
NX★ – ALL 316 S.S. SOUR GAS SERVICE
H | O-RING MATERIAL
1★ – FKM & BUNA-N
2 – FKM 75 DURO
3 – FKM 90 DURO
4 – BUNA-N
9 – NEOPRENE
P – FKM (LOW TEMP) 75 DURO
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 Limit1, 2
(psig) | Dimensions2
"A" x "B" x "C" (in ± .062) | Approximate Weight 2
(lbs) |
|---|---|---|---|---|
| Inlet and Outlet Code11 | Inlet and Outlet Size (in)¾" FNPT x 1" FNPT | Pressure Limit1, 2
(psig)1650 | Dimensions2
"A" x "B" x "C" (in ± .062)2.265 x 1.906 x 7.078 | Approximate Weight 2
(lbs)4.5 |
| Inlet and Outlet Code12★ | Inlet and Outlet Size (in)¾" MNPT x 1" FNPT | Pressure Limit1, 2
(psig)1650 | Dimensions2
"A" x "B" x "C" (in ± .062)3.202 x 1.906 x 8.015 | Approximate Weight 2
(lbs)4.5 |
| Inlet and Outlet Code16 | Inlet and Outlet Size (in)1" FNPT x 1" FNPT | Pressure Limit1, 2
(psig)1650 | Dimensions2
"A" x "B" x "C" (in ± .062)3.202 x 1.906 x 8.015 | Approximate Weight 2
(lbs)5.5 |
| Inlet and Outlet Code17★ | Inlet and Outlet Size (in)1" MNPT x 1" FNPT | Pressure Limit1, 2
(psig)1650 | Dimensions2
"A" x "B" x "C" (in ± .062)3.202 x 1.906 x 8.015 | Approximate Weight 2
(lbs)4.5 |
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.
| Inlet and Outlet Code | Inlet and Outlet Size DN (mm) | Pressure Limit1, 2
(kPa) | Dimensions 2
"A" x "B" x "C" (mm ± 1.6) | Approximate Weight 2
(kg) |
|---|---|---|---|---|
| Inlet and Outlet Code11 | Inlet and Outlet Size DN (mm)DN 20 FNPT x DN 25 FNPT | Pressure Limit1, 2
(kPa)11376 | Dimensions 2
"A" x "B" x "C" (mm ± 1.6)57.2 x 47.6 x 179.4 | Approximate Weight 2
(kg)2.0 |
| Inlet and Outlet Code12★ | Inlet and Outlet Size DN (mm)DN 20 MNPT x DN 25 FNPT | Pressure Limit1, 2
(kPa)11376 | Dimensions 2
"A" x "B" x "C" (mm ± 1.6)82.6 x 47.6 x 203.2 | Approximate Weight 2
(kg)2.0 |
| Inlet and Outlet Code16 | Inlet and Outlet Size DN (mm)DN 25 FNPT x DN 25 FNPT | Pressure Limit1, 2
(kPa)11376 | Dimensions 2
"A" x "B" x "C" (mm ± 1.6)82.6 x 47.6 x 203.2 | Approximate Weight 2
(kg)2.5 |
| Inlet and Outlet Code17★ | Inlet and Outlet Size DN (mm)DN 25 MNPT x DN 25 FNPT | Pressure Limit1, 2
(kPa)11376 | Dimensions 2
"A" x "B" x "C" (mm ± 1.6)82.6 x 47.6 x 203.2 | Approximate Weight 2
(kg)2.0 |
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.