Model 910.81

Barstock valve for pressure gauges, stainless steel version

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  • 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 versions


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

Process connection

Valve body and valve spindle
metal seat, 1.4404 / 316L stainless steel

1.4401 / 316 stainless steel


Valve cone
1.4571 stainless steel

Gland packing
PTFE (for temperatures to a max. 200 °C)


Stainless steel

Nominal pressure
PN 420 bar (6,000 psi)


  • 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)
Barstock valve for pressure gauges, stainless steel version
  • Barstock valve for pressure gauges, stainless steel version
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