The Yibengfa name operates as a valve industry platform rather than a single manufacturing brand, but the data below reflects the standard A41H-16C specification shared across reputable Chinese valve makers and is directly applicable for selection and procurement.The main safety valve product names of China safety valve Network include:900 DIN Safety Valve,Air Compressor Safety Valve,A69Y Main Safety Valve(W Series) Welding Safety Valve,Anti-sulfur Spring Type Safety Valve,ANSI Bellows Safety Valve,Air, Gas Valve,Ammonia-used Safety Valve,A28X Air Compressor Safety Valve,AD Safety Valve Muffler,Bellows Spring Fall Lift SafetyValve,Built-in Safety Valve,Butterfly Spring Type Safety Valve,Copper Safety Valve,Duplex Safety Valve,Double Lever Safety Valve.

Technical Parameters

The A41H-16C carries a nominal pressure rating of PN16 (1.6 MPa). The valve body is constructed from WCB cast carbon steel, with a ZG2Cr13 or 1Cr18Ni9Ti seat and a D507 hardfaced sealing surface. The applicable temperature range is -29 to 300 degrees Celsius for air, water, and oil media. The set pressure is adjustable from 0.1 to 1.6 MPa. For a representative DN40 unit, the flow diameter is 32 mm, the pressure range is 1.0 to 1.3 MPa, the set pressure is 1.1 MPa, the discharge pressure is 1.32 MPa, and the reseat pressure is 0.88 MPa. The design standard is GB/T 12243, with structural length per GB/T 12221, flange connection per JB/T 79, and testing per GB/T 12242.

Dimensions

Dimensions are given in millimeters. For DN20: do 15, L 100, L1 85, H approximately 275. DN25: do 20, L 100, L1 85, H 276. DN32: do 25, L 115, L1 100, H 285. DN40: do 32, L 120, L1 110, H 292. DN50: do 40, L 135, L1 120, H 370. DN65: do 50, L 140, L1 130, H 375. DN80: do 65, L 160, L1 135, H 373. DN100: do 80, L 170, L1 160, H 513. DN125: do 100, L 190, L1 190, H 570. DN150: do 125, L 205, L1 195, H 585. DN200: do 150, L 240, L1 230, H 710. DN250: do 200, L 350, L1 320, H 905. Flange dimensions including bolt circle, bolt holes, and gasket diameters are available from the manufacturer for each size.

Summary

The A41H-16C spring-loaded safety valve offers a PN16 rating, WCB carbon steel body, and hardfaced sealing surfaces for steam, air, water, and oil service up to 300 degrees Celsius. Dimensions are available from DN20 through DN250 with standard flange drilling. For project procurement, confirm the specific manufacturer's material certificates, set pressure requirements, and pressure test reports, as dimensional tolerances and spring ranges may vary slightly between suppliers.

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