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Spring-wide safety valve

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Spring-wide safety valve

Model: A28H-16
Nominal diameter: DN15 ~ 80mm
nominal pressure: PN1.6 ~ 10.0MPa
Operating temperature: ≤200 ℃
body material: steel, forged steel, stainless steel
for the media: air, steam, water, nitrogen and hydrogen mixture gas and other
applications: used in chemical, petrochemical, oil, paper, mining, electricity, gas, food, pharmaceutical, water supply and drainage, municipal, mechanical equipment, electronics industry, urban construction and other fields
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Product Overview:
       A28H, A28Y spring-loaded 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. A28H, A28Y spring all-purpose safety valve for operating temperature ≤ 200 ℃ air, steam, water, nitrogen and hydrogen mixture and other media equipment or piping, A28Y-P / 10R8 for operating temperature ≤ 200 ℃ corrosive Medium equipment or piping, as overpressure protection device.


product nameA28H, A28Y spring full safety valve
Product numberA28H, A28Y
Nominal diameterDN15-80mm
Pressure range1.6MPa-10.0MPa
Body materialCast steel, forged steel, stainless steel


The main parts and materials:
Picture .png

NO.Part NameA28H materialA28Y-P materialA28Y-R8 material
1BodyHT200ZG1Cr18Ni9TiCF8M
2Seat35ZG1Cr18Ni9TiCF8M
3Adjustment ring2Cr131Cr18Ni9Ti316
4Disc2Cr131Cr18Ni9Ti316
5spring50CrVA50CrVA coated fluoroplastic50CrVA coated fluoroplastic
6Valve stem2Cr132Cr13316
7Adjust the screw452Cr13316
8Protective coverZG200-400ZG200-400CF8M

Sealing surface materialSurfacing D507Surfacing Co-based cemented carbide


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