All-welded Seals

310-315 Mini-Diaphragm Seals
310-315 Mini-Diaphragm Seals

310-315 Mini-Diaphragm Seals

The Ashcroft® 310 and 315 mini-diaphragm seals or isolation devices protect pressure measuring instruments.

Diaphragm MaterialBottom Housing MaterialPressure Ratings
316L Stainless Steel, Monel 400, Hastelloy B, Hastelloy C 276316L Stainless Steel, Monel 400, Hastelloy B, Hastelloy C 276172 bar
311-312 Midi-Diaphragm Seals
311-312 Midi-Diaphragm Seals

311-312 Midi-Diaphragm Seals

The Ashcroft® 311 and 312 midi-diaphragm seals or isolation devices are used in confined areas to protect measuring instruments.

Diaphragm MaterialBottom Housing MaterialPressure Ratings
316L Stainless Steel, Hastelloy C 276, Tantalum316L Stainless Steel, Hastelly C-27660 bar
330 All-Welded Flush Mini Diaphragm Seals
330 All-Welded Flush Mini Diaphragm Seals

330 All-Welded Flush Mini Diaphragm Seals

The Ashcroft® 330 all-welded flush mini-diaphragm seal or isolation device protect pressure measuring instruments.

Diaphragm MaterialBottom Housing MaterialPressure Ratings
316L Stainless Steel316L Stainless Steel200 bar
400-401 All-Welded Diaphragm Seals
400-401 All-Welded Diaphragm Seals

400-401 All-Welded Diaphragm Seals

The Ashcroft® 400 and 401 all-welded diaphragm seals or isolation devices protect pressure measuring instruments.

Diaphragm MaterialBottom Housing MaterialPressure Ratings
Variety of metallic wetted materialsVariety of metallic materials320 bar, 400: 600 bar, 401: 345 bar
500-501 All-Welded Diaphragm Seals
500-501 All-Welded Diaphragm Seals

500-501 All-Welded Diaphragm Seals

The Ashcroft® 500 and 501 all-welded diaphragm seals or isolation devices protect pressure measuring instruments.

Diaphragm MaterialBottom Housing MaterialPressure Ratings
Variety of metallic wetted materialsVariety of metallic materials34 bar
510-511 All-Welded Diaphragm Seals
510-511 All-Welded Diaphragm Seals

510-511 All-Welded Diaphragm Seals

The Ashcroft® 510 and 511 compact, all-welded diaphragm seals or isolation devices protect pressure measuring instruments.

Diaphragm MaterialBottom Housing MaterialPressure Ratings
316L Stainless Steel, Hastelloy C 276, Monel 400316L Stainless Steel, Hastelloy C 276, Monel 400510: 345 bar, 511: 100 bar
740-741 High-Displacement Diaphragm Seals
740-741 High-Displacement Diaphragm Seals

740-741 High-Displacement Diaphragm Seals

The Ashcroft® 740 and 741 high-displacement diaphragm seals or isolation devices are used with low-ranged instruments or high static pressure dp gauges with low differential pressure.

Diaphragm MaterialBottom Housing MaterialFlange Rating
Variety of metallic wetted materialsVariety of metallic wetted materials750 psi
402-403 Flanged All-Weld Diaphragm Seals
402-403 Flanged All-Weld Diaphragm Seals

402-403 Flanged All-Weld Diaphragm Seals

The Ashcroft® 402 and 403 flanged all-weld diaphragm seals or isolation devices protect pressure measuring instruments.

Diaphragm MaterialBottom Housing MaterialFlange Rating
Variety of metallic wetted materialsVariety of metallic materials150, 300, 600, 900 or 1.500