Simplex Oil Tank Breather Valve CB/T692-94

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China Simplex Oil Tank Breather Valve CB/T692-94:

Oil-Tank Breather Valve CB/T692-94 has simplex type and duplex type. Simplex oil tank breather valve is spring type, duplex oil tank breather valve is gravity type. When the pressure in the tank exceeds atmospheric pressure, the breather valve will open and discharge the pressure until the tank pressure and atmospheric pressure keep the balance.When the tank pressure is below the atmospheric pressure value (i.e. low negative pressure), the valve will inhale until the tank the pressure and atmospheric pressure balance.

Now PV valve is replacing the oil-tank valve.

Technical Specification:

Type Flange Standard Nominal Pressure Nominal Diameter
Pressure Valve Vacuum Valve
Simplex A Spring Type GB569 ≤0.021Mpa <-0.007Mpa 80/100 & 100/150
AS
Duplex B Gravity Type GB2501
BS

Main Parts & Material:

Body/Bonnet---Cast Steel or Cast Iron

Guide Rod---Stainless Steel

Stem---Bronze

Main Size(mm):

Nominal
diameter
Structure Dimension
H H1 L L1 Thickness δ
A B A B A B A B cast iron cast steel
80/100 248 330 100 10 260 380 135 220 8 6
100/150 290 500 136 25 300 500 140 304 9 7

Type A and B:

nominal
diameter
flange dimension weight(kg)
oil-Tank connection flange bolt outlet flange bolt cast iron cast steel
D D1 D2 b d0 n个 Th. D1 D11 D21 b1 d01 n个 Th. A B A B
80/100 170 138 118 14 15 8 M14 190 158 138 14 15 8 M14 25.7 53.54 23.26 50.1
100/150 190 158 138 14 15 8 M14 240 208 190 14 15 12 M14 38.32 38.32 35.54 81.96

Type AS, BS:

nominal
diameter
flange dimension weight(kg)
oil-Tank connection flange bolt outlet flange bolt cast iron cast steel
D D1 D2 b d0 n Th. D1 D11 D21 b1 d01 n Th. AS BS AS BS
80/100 190 158 128 18 18 4 M16 210 170 148 18 18 4 M16 29.97 58.28 28.86 57.40
100/150 210 170 148 18 18 4 M16 265 225 202 20 18 8 M16 44.86 93.92 43.05 91.46

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