VBDT check valves for rigid pipe are used to hold a double-acting cylinder in position
The valves are used with double-acting cylinders and require a signal pressure to release the load.
The external body is made of high strength steel and is protected from oxidation by a zinc treatment.
It is possible to request a surface treatment in zinc/nickel to increase resistance to oxidation, in the case where, for example, the valve is poorly protected and exposed to atmospheric agents.
The sealing is ensured by a tapered poppet hardened and grinded.