Ashcroft Type 311 / 312 Diaphragm Seal

All-welded "midi" diaphragm seal with metal construction prevents process media leakage with 316L stainless top housing.

Ashcroft Type 311 / 312 Diaphragm Seal
Ashcroft Type 311 / 312 Diaphragm Seal

Starting at $284.20

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Manufactured

By Ashcroft

Includes

FREE Ground Shipping on orders of $1,000 or more (some models excluded)
FREE Lifetime Tech Support

Availability

Usually ships in 3-4 weeks

Product Specs

Questions?
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Overview

Features

All-welded metal construction
No gaskets or bolts
2.5 & 3.5in gauges from 15 to 1000 psi
4.5in gauges from 30 to 1000 psi
Top housing material 316L stainless steel standard
Diaphragm materials:
- 316L stainless steel
- Hastelloy C
- Tantalum
1/4 NPT or 1/2 NPT instrument connections

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RETIRED

Description

The Ashcroft Type 311 / 312 diaphragm seal is compact in size to fit into space restricted areas. It is designed to protect transducers, mini-switches, and pressure gauges with 3.5 inch or smaller dial sizes from corrosion, plugging or freeze-up. The all-welded metal construction prevents process media leakage. It is rated for 2500 psi at 100°F and has a 316L stainless steel top housing standard. Lower housing materials include 316L stainless steel or Hastelloy C. Diaphragm materials include 316L stainless, Hastelloy C, or Tantalum. 1/4, 1/2, 3/4 or 1 NPT process connection sizes are available and the instrument connection is 1/4 or 1/2 NPT.