Ralston Block and Bleed Valves Make Your Gas Last Longer

Block and bleed valve for calibration

Keep Gas in the Tank

  • Conserve compressed gas by venting only the gas that needs to be vented in a device under test and nothing more…….
  • Brass and Stainless Steel, 3000 psi & 5000 psi working pressure
  • NPT, male & female quick-test fittings

Ralston Block and Bleed Valves are an excellent accessory for doing pressure calibration with a Ralston Volume Controller, Nitropak, Calibration Manifold or other calibration device. This unique valve helps conserve compressed gas by venting only… Continue Reading »

The Difference Between NPT, BSPP and BSPT Seals

Pressure systems in the process industry use different ways of sealing depending on the geographical region, size of the pressure system and the environment. There are regional differences in sealing types as well as industry preferences. For example, many pressure systems onboard ships use BSPP adapters while many applications in the oil and gas industry use NPT fittings. While one sealing style is not inherently better than another each style has its application. Continue Reading »