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HON 790

HON 790 is a direct-acting water safety shut-off valve (SSV) for hot water circuits of gas preheaters according to DIN EN 14382. It is ideal for protecting boilers of heating station gas pre-heaters​. ​​​

HON 790
Honeywell safety devices/Safety Shut-Off Valves

Features include:

-For assembly in flow and return pipes of heating circuits
-Simple construction
-Low-pressure loss
-Easy operation and performance tests
-Function Class A
-CE registration according to PED
-SIL certified according to IEC61508
-Max. admissible pressure PS: up to 160 bar
-Max. operating pressure pmax: up to 160 bar

-Sandwich design for assembly between DIN flange PN 10/16, PN 25, PN 40 and Flange Class 150, Class 300, Class 600, Class 900 according to ANSI 16.5 in DN 25, DN 50, DN 80, DN 100 and DN 150

All mechanical components of this device are without ignition sources. As such, they are not subject to ATEX 95 (94/9/EC). All electrical components used with this device meet the ATEX requirements.

HON 790pdf dokument (0.47MB)


Honeywell announced it has completed its acquisition of the Elster division of Melrose Industries plc, a leading provider of thermal gas solutions for commercial, industrial, and residential heating systems and gas, water, and electricity meters, including smart meters and software and data analytics solutions. Elster also manufactures gas metering and pressure control devices, as well as total solutions for the gas transmission and distribution industry. After the acquisition, Honeywell secured it's position as world's leading company in providing solutions and products in oil & gas industry. According to Fortune ranking, it is one of the 100 largest companies in the world. Immense portfolio, high quality products and competative prices highlight Honeywell above it's competition.

Honeywell Process Solutions (HPS) is a global leader with over 40 years of experience delivering process automation and control solutions that help industrial customers run their operations safely, reliably, efficiently and sustainably through innovative technologies, services and domain expertise. With more than 12,000 employees around the world, HPS serves customers in more than 125 countries in the oil & gas, refining, petrochemicals, pulp & paper, specialty chemicals, pharmaceuticals, industrial power, and mining & minerals industries.

Official web presentationURL dokument