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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