Features & Benefits
- Product applications
Oil & Gas, Petrochemical, Power, Food, Sanitary and Paper applications - Diaphragm seals are suitable for use in:
Corrosive atmospheres. Resistant to chemical attack.
Home » Products » Product class » Diaphragm Seals for Pressure Instruments
Complete range of diaphragm seals for application on all our pressure and differential pressure instruments.

As part of the Delta Mobrey Performance Series, model version 207 has been manufactured specifically for applications which need to understand levels of absolute pressure, the 207 pressure switch incorporates a sealed reference vacuum for true absolute pressure sensing.
This concept for this robust range of products was developed over 50 years ago. Each model has gone through a range of modifications and enhancements since then, ensuring these products give a consistent level accurate measurement in industries where chemical attack is possible. The Performance range is robust and a hardworking fundamental set of instrumentation.
The 207 Pressure Switch is suitable for setpoints between 0 and 1 bar absolute with maximum working pressures up to 3 bar. (EAC certification is available on request).
Key Benefits

The VM pressure switch offers a compact and cost effective solution for any application where reduced space and resistance to aggressive atmospheres is necessary. Performance is assured by utilising Delta Mobrey’s proven sensor technology in a new simple, one-piece enclosure.
Key Features
The range of models available for these cost effective switches include: general purpose applications, or those outdoor applications such as marine where the atmosphere may be more aggressive. The model VM Pressure Switch is suitable for setpoints between 0 and 700 bar with maximum working pressures up to 1000bar. (EAC certification is available on request).

The GR7 Temperature Switch provides users with a compact, robust and hermetically sealed switch for use in safe and hazardous areas. This makes them particularly suitable for panel mounting in harsh environments. This product comes with a rigid or semi-rigid thermal system and is suitable for setpoints between -40°C and +350°C, with a maximum working temperature of up to 360°C (EAC certification is available on request).
Key Features

The 700 Performance Series switch has a flexible thermal system and is suitable for setpoints between -50°C and 300°C with maximum working temperatures up to 310°C. it is ATEX and IECEx accredited with environment and hermetically sealed options available. All of which can work in traditional process instrumentation industries. This has been part of our product portfolio for many years, the initial product was originally developed in the mid 1970’s, this mature product has undergone several enhancements to ensure it continues to give the level of reliability required today. Available in models 721/2/3, 731/2/3/4, 771/2/3/4 & 781 (EAC certification is available on request).
Key Features
