Diaphragm Seals from Dresser Instruments Can Be Customized

Diaphragm seals sometimes require unique solutions. Therefore, Dresser Instruments offers an Ashcroft® full-service, custom-engineered diaphragm seals program.

With decades of expertise in pressure and temperature measurement and instrument isolation, Ashcroft® engineers welcome the challenges difficult applications present. Unusual diaphragm seals with special connections, particular materials, and distinctive configurations are made-to-order for specific application requirements. And, as a manufacturer of both instruments and diaphragm seals, any standard combination of Ashcroft® products and seals can be ordered, assembled and quickly shipped, directly from the factory.

Dresser Instruments manufactures a wide variety of Ashcroft® diaphragm seals at their Stratford, CT facility to meet the needs of chemical processing, pharmaceutical, water and wastewater plants and facilities among others. Customers can select from a variety of configurations such as capsule type, welded or bonded and clamped designs with threaded, flanged and flushing connections to name a few. Diaphragm seal materials are available for all types of processes. At www.ashcroft.com a Corrosion Data Guide is available to assist in the selection of proper materials for a number of processes. Experienced engineers are available for application assistance of seals in combination with other Ashcroft® products such as pressure gauges, switches and transducers. Dresser Instruments also has a wide network of trained diaphragm seal assemblers across the U.S.

New additions to this product line are the Ashcroft® Type 311/312 midi-seal: a small, cost-effective diaphragm seal with important features that are usually found in larger diaphragm seals. Some of these features are: all-welded construction to eliminate possible leakage of the process media; many process connections including 1" male NPT; and a flushing connection option for easy cleaning in applications where clogging could occur. The Ashcroft® 311/312 diaphragm seal can be used with switches, transducers, digital gauges, or 31/2" and 41/2 " Bourdon tube gauges from vacuum through 1000 psi and 100 psi through 1000 psi, respectively.

The Ashcroft Type 330 mini-diaphragm seal introduces a diaphragm that is flush with the end of the 1" male NPT process connection. The design eliminates any pocket or dead-leg so that particles in the process will not interfere with continuous instrument performance.

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