
ARI Safety Relief Valves

The ARI 900 series relief valves are flanged steel bodied valves with stainless steel seat . hardened stainless steel disc and nodular iron spring chamber. They are ASME section VIII and National Board certified for steam air-gas and liquid service. These are your best value in a high quality steel body stainless trim flanged valve.
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Bill of Materials | ||
---|---|---|
Part | Description | Material Codes |
1 |
BODY | SA 216 WCB |
2 | SEAT | SA 479 GR. 316 TI |
3 |
STUD | SA 193 B7 |
4 | SPINDLE GUIDE |
≤ 2": AISI 420 > 2" SA 395 / AISI 440 |
8 | HEXAGON NUT |
SA 194 2H |
11 |
BONNET |
SA 395 |
12 |
DISC |
AISI 440 |
14 |
SPINDLE |
AISI 420 |
17 |
ADJUSTING SCREW | AISI 420 |
28,29,30 |
CAP |
SA 395 |
35 | LIFT FORK |
SA 395 |
36,41 |
LIFTING LEVER | SA 395 |
37 | SPRING | AISI 6150, AISI 9254 |
DESIGN | |||
---|---|---|---|
Valve Size [inch] |
Orifice Area [inch 2] |
Orifice Diameter [mm] |
Orifice Letter |
1” X 2” | 0.644 | 22.5 | E |
1 ½” X 2” | 1.024 | 29 |
F |
1 ½” X 3” | 1.667 | 36 | H |
2” X 3” | 2.576 | 45 | J |
3” X 4” | 4.383 | 58.5 | L |
4” X 6” | 10.304 | 90 | M |
6” X 8” | 13.678 | 106 | Q |
Click here for capacities, materials, dimensions and weights.
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