Applications

• Shut-off and throttle valve for pressure measuring instruments, for measuring liquids, gases and vapours
• For aggressive media, also in aggressive environments
• Process industry: plant construction, chemical, petrochemical, power stations, mining, on- and offshore, and in the environmental sector

​Special Features

• Single block valve PN 420 DN 5
• Block and bleed valve PN 420 DN 5
• High-grade stainless steel version

Barstock valves are suited to shutting off the impulse line and for mounting pressure measuring instruments. As a standard, the valves feature external stem threads and ½ NPT connection threads. Other connections are available on request. For venting the measuring line, the barstock valves have an additional vent hole, which is sealed with a bolt when delivered (see drawings on reverse).

Block and bleed valves also have a separate vent valve.

Standard version

• Pressure connection: ½ NPT
• Valve body and valve spindle: metal seat, 1.4404 / 316L stainless steel
• Bonnet: 1.4401 / 316 stainless steel
• Valve cone: 1.4571 stainless steel
• Gland packing: PTFE (for temperatures to a max. 200 °C)
• T-handle: Stainless steel
• Nominal pressure: PN 420 bar (6,000 psi)

Options

• Nominal pressure: up to PN 700 (10,000 psi)
• 3.1 material test certificate per EN 10204
• Oil and grease free version for oxygen
• Version: with ¼ NPT
• Monel® and Hastelloy® special materials
• Version in accordance with NACE
• Anti-tamper protection (also lockable)