Duplex Oil Tank Breather Valve CB/T692-94:
China Duplex 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 |
