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Location:PRODUCTS >> Safety valve >> Spring Kaiqi closed high-pressure safety valve
Spring Kaiqi closed high-pressure safety valve
Model: A42Y-320
Nominal diameter: DN20 ~ 400mm
Nominal: PN1.6 ~ 10.0MPa
Operating temperature: ≤300 ℃
body material: steel, forged steel, stainless steel
air, LPG and liquid: Medium
Applications : Suitable for chemical, petrochemical, petroleum, papermaking, mining, electricity, liquefied petroleum gas, food, pharmaceutical, water supply and drainage, municipal, mechanical equipment, electronics, urban construction and other fields

Product Overview:
A42Y spring fully enclosed closed high-pressure safety valve for a variety of light and heavy industry and building pipelines. Safety valves are widely used in: chemical, petrochemical, petroleum, paper, mining, electricity, liquefied petroleum gas, food, pharmaceuticals, water supply and drainage, municipal services, machinery and equipment support, electronics industry, urban construction and other fields. A42Y spring fully enclosed closed high-pressure safety valve for operating temperature ≤ 300 ℃ air, petroleum gas, liquid and other media equipment and piping. A42Y-P-type and A42Y-R-type for operating temperature ≤ 200 ℃ corrosive media equipment and piping, as over-voltage protection device.


product name A42Y spring fully enclosed closed high-pressure safety valve
Product number A42Y
Nominal diameter DN20-400
Pressure range 1.6MPa-10.0MPa
Body material Cast steel, forged steel, stainless steel


The main parts and materials:
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NO. Part Name A42Y-C / KA42Y-C material A42Y-P / KA42Y-P material A42Y-R material DA42Y-P material
1 Seat 2Cr13 / 1Cr18Ni9Ti ZG1Cr18Ni9Ti ZG1Cr18Ni12Mo2Ti ZG1Cr18Ni9Ti
2 Body WCB ZG1Cr18Ni9Ti ZG1Cr18Ni12Mo2Ti LCB / ZG1Cr18Ni9Ti
3 Adjustment ring 2Cr13 / 1Cr18Ni9Ti 1Cr18Ni9Ti 1Cr18Ni12Mo2Ti 1Cr18Ni9Ti
4 Backlash plate 2Cr13 / 1Cr18Ni9Ti 1Cr18Ni9Ti 1Cr18Ni12Mo2Ti 1Cr18Ni9Ti
5 Disc 2Cr13 / 1Cr18Ni9Ti 1Cr18Ni9Ti 1Cr18Ni12Mo2Ti 1Cr18Ni9Ti
6 Guide sleeve 2Cr13 / 1Cr18Ni9Ti 1Cr18Ni9Ti 1Cr18Ni12Mo2Ti 1Cr18Ni9Ti
7 cap ZG230-450 ZG230-450 ZG230-450 ZG1Cr18Ni9Ti
8 spring 50CrVA 50CrVA coated fluoroplastic 50CrVA coated fluoroplastic 50CrVA
9 Valve stem 2Cr13 1Cr18Ni9Ti 1Cr18Ni12Mo2Ti 1Cr18Ni9Ti
10 Adjust the screw 45 2Cr13 2Cr13 2Cr13
11 Bonnet ZG200-400 ZG200-400 ZG200-400 ZG230-450
12 Sealing surface material Surfacing Co-based cemented carbide


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