Spring low lift male thread safety valve

Spring low lift male thread safety valve

A21F, A21H - C type applies to work more than 200 degrees of air temperature, ammonia, liquefied petroleum gas (LPG)... Such media devices or piping. A21W - P, R applies to more than 200 degrees Celsius temperature corrosive gas or liquid equipment or piping, as overpressure protection device. KA21Y type applies to more than 100 degrees Celsius temperature of liquefied petroleum gas (LPG), etc.

Spring low lift male thread safety valve's main parts:

A21H name. Parts of C/A21F materials - A21W - P/P A21Y materials A21F - - materials
1 pipe joints and 1Cr18Ni9Ti 1Cr18Ni12Mo2Ti
2 the union nut and 2Cr13 1Cr18Ni9Ti
3 seats 1Cr18Ni12Mo2Ti 1Cr18Ni9Ti 35
4 1Cr18Ni12Mo2Ti 1Cr18Ni9Ti 2Cr13 body
5 disc 2Cr13/2Cr13 + PTFE 1Cr18Ni9Ti / 1Cr18Ni9Ti + PTFE 1Cr18Ni12Mo2Ti
6 the spring seat 2Cr13 1Cr18Ni9Ti 1Cr18Ni12Mo2Ti
7 50CrVA spring 50CrVA coated 50CrVA fluorine plastic coated fluorine plastic
8 lock nut Q235 - A ZG230 1Cr18Ni9Ti - 450
9 2Cr13 mat 1Cr18Ni12Mo2Ti 1Cr18Ni9Ti spring orientation
10 conditioning nut Q235 - A 2Cr13 1Cr18Ni12Mo2Ti
Sealing material "Y" surfacing Co, hard alloy, "H" D507 surfacing, "W" shape to the valve body

The dimensions and connection size of Spring low lift male thread safety valve

Models of nominal diameter do d do M d1 d1 L L1 hundredth H
KA21 16C -
A21H 16C -
A21H - 40
A21W - 16P
A21W 40P -
KA21-16P 15 December 15 20 M27 x 1.5 G1 1/2 "30 35 76 66
20 and 20 25 M33 x 1.5 G3 1/4 "35 40 87 68
25 and 25 M39 31 (1.5 G1 "40 50 100 105
A21Y - 64
A21Y - 64P
A21Y - 100
A21Y 100P 15 October 15-25 M39 x 1.5 G1 "44 50 100 66
20 M39 31 October 20 (1.5 G1 "44 50 100 68
25 M39 31 December 25 (1.5 G1 "44 50 100 105
A21W - 160/160P 15 August 20 / M24 x2 G1 "44 50 100 261
20 August 25 / M33 x2 G1 "44 50 100 261
25 August 28 / M36 x2 G1 "44 50 100 285