Type 100 Series Threaded Capsule Diaphragm Seal - DESCRIPTION

by Ashcroft

The Ashcroft^® 100 and 101 threaded diaphragm seals are a complete line of isolation devices designed to protect pressure sensors and instrumentation. They can be applied in a wide variety of applications. Used when the process media material is incompatible with your pressure measuring instrument, they can also be used in high-temperature applications or when the media has the potential to clog the connection to the measuring device.

The top housing and diaphragm capsule are interchangeable with all of the Ashcroft bottom housings. They are designed with a fill/bleed connection as a standard feature, which allows one to fill the diaphragm seal assembly and your pressure instrument simultaneously after evacuation. This ensures that the filling media will flow into the completed unit.

A Viton O-ring, compatible with all standard fill fluids, and a Teflon back-up ring provide a seal between the diaphragm capsule and the top housing. A thin Teflon PTFE gasket between the diaphragm and bottom housing ensures a leak-tight corrosion resistant seal even at high pressure.

Key Features:

Style:

Type 100: threaded
Type 101: threaded with a flushing port

Process size:

NPT female: 1/4 to 1 1/2
NPT male: 1/4 to 1

Rated up to 2,500 psi, optional 5,000 psi
Wide selection of diaphragm and lower housing materials
Diaphragm threaded to top housing
Flushing port (type 101) provides easy cleaning/flushing due to process media prone to clogging

Applications:

Oil and gas
Refineries
Chemical and petrochemical
Water and wastewater
Oil and gas fracking
NACE compliant processes (Sour Gas Separation)
Biogas and biodiesel