Heating Bell & Gossett Pressure Relief Valves | 790-30 790K Relief Valve

Features:

• Installed In Systems To Discharge Water Should Excessive Pressure Develop
• Features An Extra Large Relief Diaphragm To Assure Positive Action
• Asme Safety Relief Valves
• Protect Fired And Unfired Hot Water Vessels Against Hazardous Operating Pressures.
• Engineered In Accordance With Section Iv Of The Asme Boiler And Pressure Code For Heating Boilers With Capacities Certified By The National Board Of Boiler And Pressure Vessel Inspectors.
• Offer The Highest Btuh Ratings Available On The Market Today For Valves In Their Class (790,000 To 5,999,000 Btuh)
• Epdm Diaphragm Operated (Cast Iron Models) And Diaphragm Assisted (Bronze Models) Have An Effective Area Approximately 5 Times Greater Than Conventional “Pop-Type” Relief Valves To Help Overcome The Effects Of Fouling.
• Low Differential Between Opening And Closing Pressures Helps To Prevent Conditions Under Which System Water Might Flash To Steam And Cause Hammering
• Model 790 And 1170 Operating Data & Construction
• Maximum Working Pressure 125 Psig (8.6 Bar)