The Ashcroft^® 311 and 312 midi-diaphragm seals or isolation devices are used in confined areas to protect measuring instruments. Used to ensure process compatibility, they are also applied when process media exhibits high temperature and pulsation. This model is ideal with limited space installations.

Key Features:

• Compact and lightweight design
• Choice 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

Specifications:

• Style:
  Type 311: threaded
  Type 312: threaded
• Process size:
  Type 311: 1/4" to 1/2" NPT male; 1/4" to 1" NPT female
  Type 312: 1/4" and 1/2" NPT female

The 311 and 312 midi-diaphragm seals are ideal where corrosion protection and limited-spacing are essential.            

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

Please Contact Us for more detail