Feature
Most suited for dust proofing of storage tanks for pure water and other substances liable to be degraded by the entrance of dust.
Most suited for shutting off active gases from the contents of storage tanks for foodstuffs, medicines, petroleum products, etc., liable to be degraded by contact with air.
Used to seal inert gases in storage tanks for flammables and most suited for prevention of explosion and fire.
Standard specification
- PIPE NOMINAL SIZE
-
- PRIMARY
- 25A(1″) FLANGE TYPE
- SECONDRY
- 50A(2″) FLANGE TYPE（Tank side）
- CONTROL PIPE
- Rc1/2（Tank side）
- PRIMARY PRESSURE
- 0.1～0.7MPa *1
- SET PRESSURE
- 0.1～3kPa *2
*1Normal control cannot be effected when primary pressure becomes less than 0.1 MPa. In this case, an external pilot control system can be used. Consult us for details.
*2The pressure setting remains constant when primary pressure fluctuates. As the main valve is pilot operated, a completely sealed tank stabilizes when internal pressure becomes about 0.05-0.1 kPa higher than the setting.
DESCRIPTION OF OPERATION
