The Mala MM-427 Safety Relief Valve is a bronze pop style spring loaded valve angle pattern. Screwed male inlet BSPT ends, enclsoed discharge.

IBR CERTIFIED

Dimensions
Nominal Size A B C D H1 H2 H
Inch MM
1/2" 15 12.7 3/4" BSPT 1/2" BSP 45 72 207 279
3/4" 20 19 1" BSPT 3/4" BSP 65 85 232 317
1" 25 25 1-1/4" BSPT 1" BSP 65 85 232 317
1-1/4" 32 32 1-1/2" BSPT 1-1/4" BSP 66 100 298 398
1-1/2" 40 38 2" BSPT 1-1/2" BSP 66 100 298 398
2" 50 50 2-1/2" BSPT 2" BSP 90 113 337 450

 

Material
Part NO. Name of Part Material Specification
1 Cap Bronze BS: 1400 LG 2
2 Lever Carbon Steel  
3 Adjusting Screw Bronze BS: 1400 LG 2
4 Locking Nut Bronze BS: 1400 LG 2
5 Upper Spring Disc Bronze BS: 1400 LG 2
6 Spring Spring Steel  
7 Stem Brass Forged
8 Regulating Ring Bronze BS: 1400 LG 2
9 Lower Spring Disc Bronze BS: 1400 LG 2
10 Seat Bronze BS: 1400 LG 2
11 Locking Screw Brass  
12 Nut Brass  
13 Body Bronze BS: 1400 LG 2
14 Chamber Bronze BS: 1400 LG 2

Size 20mm x 65mm
Steam Working Pressure 250 PSI
Temperature 225°C

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