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Stainless steel vertical check valve
Model: H42W
Nominal diameter: DN40 ~ 200mm
Nominal: PN1.6 ~ 2.5MPa
Temperature: ≤200
Medium: corrosive medium, weak corrosive
Materials: chrome-nickel stainless steel, titanium, nickel-chromium-molybdenum, titanium, stainless steel
design criteria : API6D, JB / T8937, API594
Structure Length: API594, JB / T8937
Connection Standard: ASME B16.5, GB / T 9113, JB / T79, HG / T 20592
Pressure Test: API 598, GB / T 13927, JB / T 9092
Product details

Product description

h42w stainless steel vertical check valve is normally closed, due to the pipeline inlet medium pressure, and overcome the spring resistance to open the valve. when the inlet side of the medium pressure is lower than the outlet end, the spring will push the spool to the valve seat to close the valve to prevent the media countercurrent, it played the role of check. the valve due to the use of spring support spool, so the use of vertical or horizontal installation can be installed.

Material list

model PN Working pressure / Mpa Applicable temperature / ℃ Suitable media material
Body, disc Pilot valve Sealing surface
H42W-16P 16 1.6 ≤200 Corrosive media Chrome nickel-titanium stainless steel Chrome nickel-titanium stainless steel Chrome nickel-titanium stainless steel
H42W-25R 25 2.5 Weak corrosive medium Chromium nickel molybdenum titanium stainless steel Chromium nickel molybdenum titanium stainless steel Chromium nickel molybdenum titanium stainless steel


Performance specifications

Technical Parameters Pressure Level
16 20 25 32 35 40 45 50 60 70
Working pressure (Mpa) ≤16 ≤20 ≤25 ≤32 ≤35 ≤40 ≤45 ≤50 ≤60 ≤70
Test pressure (M) strength 24 30 37.5 48 52.5 60 67.5 75 90 105
seal 17.6 22 27.5 35.2 38.5 44 49.5 55 66 77



The main dimensions 1.6Mpa



2.5Mpa