311-312 Midi-Diaphragm Seals

The Ashcroft^® 311 and 312 midi-diaphragm seals are fitted in confined areas to protect measuring instruments. Used to ensure process compatibility, they are also applied when process media exhibit pulsation. Ideal for limited space installations.

Key Features:

• Compact and lightweight design
• Choice of diaphragm and lower housing materials
• All-welded construction
• Volumetric displacement allows attachment to:
  3 1/2″ gauges (Vac to 1,000 psi)
  4 1/2″ gauges (30 to 1,000 psi)
  Transducers and Switches
• Rated up to 1,000 psi

Applications:

Process Market:
Oil and Gas
Refineries
Chemical and Petrochemical
Water and Wastewater

Process Applications:
Oil and Gas Fracking
NACE Compliant Processes (Sour Gas Separation)
Biogas and Biodiesel