The high-pressure shut-off valve type 50 is a universally applicable valve for liquid media and vapors at temperatures up to 450°C and pressures up to 268 bar.
The packing consists of several layers of graphite and is asbestos-free. (For certain applications also made of Teflon).
The stuffing box packing can be retightened during operation with the so-called stuffing box gland.
The stem thread is located above the packing gland and never comes into contact with the medium in case of leakage.
- R1/2" or VS3/8" connections (other variants on request)
- kv value = 0.48 m3/h (m3/h at Δp = 1 bar)

- forged valve body
- also available in non-ferrous metal version
- non-rotating valve stem (differential thread)
- Stuffing box glasses
Dr. Thiedig has many years of know-how in the development and manufacture of valves for extremely high pressures up to 1,000 bar. For extreme tightness requirements, we supply valves with bellows attachments, for example for use in nuclear power plants. The valves are also available in requirement level AS3.