(S3S-A) CAST IRON LOW LIFT SAFETY RELIEF VALVE
MODEL: S3S-A / S34-A / S36-A WITHOUT LEVER MODEL: S3S-LR / S34-LR / S36-LR WITH LEVER
When placing order, please indicate Working Pressure
TYPE: W/O Lever (A) With Lever (LR)
Working Fluid: Steam, Air, Liquid. Steam, Air.
Test on Body: 22 Kgf/cm2g (Hydrostatic)
Working Pressure: FC : 1～10 Kgf/cm2g (150PSI)
SUS304/SUS316 : 1～20 Kgf/cm2g (300PSI)
Size: FC : 25～50 mm
SUS304/SUS316 : 15～50 mm
Temperature: 0℃ ～ 230℃
Connection: JIS / BSPT (BS21), NPT (ANSI B2.1)
MATERIAL: SL22/21
No./ Parts W/O Lever S3S-A S3S-LR S34-A S34-LR S36-A S36-LR
With Lever
1 Cap FC SCS 13 SCS 14
2 Hexagon Nut SS 41 SUS 304 SUS 316
3 Lever Washer SS 41 SUS 304 SUS 316
4 Lever BC SCS 13 SCS 14
5 Adjusting Bolt BC SUS 304 SUS 316
6 Stop Nut BC SUS 304 SUS 316
7 Spring Seat FC SUS 304 SUS 316
8 Spring SUP 6 SUS 304 SUS 304
9 Stem SUS 304 SUS 304 SUS 316
10 Body FC SCS 13 SCS 14
11 Valve Seat SUS 304 SUS 304 SUS 316
12 Adjusting Ring BC - -
13 Adjusting Screw SS 41 - -
14 Valve Body SUS 304 SUS 304 SUS 316
15 Valve Seat FC SUS 304 SUS 316
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Nominal Diameter Valve Seat Diameter D Lift l Effective Area mm2 FC SUS Fitting Screw Lever Type H (Appr.)
2.22Dl πD l 0.785D2 L1 L2 L1 L2 Inlet d1 Outlet d2
15 15 0.4 13.3 18.8 176.6 40 45 45 50 PT 1/2 PT 1/2 127
20 20 0.5 22.2 31.4 314.0 45 45 45 50 PT 3/4 PT 3/4 130
25 25 0.6 38.8 54.9 490.6 55 55 55 55 PT 1 PT 1 136
32 32 0.8 56.8 90.3 803.8 60 65 60 60 PT 1.1/4 PT 1.1/4 197
40 40 1.0 88.8 125.6 1256.0 75 80 70 75 PT 1.1/2 PT 1.1/2 225
50 50 1.3 144.3 204.1 1962.5 80 85 80 80 PT 2 PT 2 250
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