110135 | ASME SAFETY RELIEF VALVE 1170-125 ASME Relief Valve (MCP12) | Bell & Gossett

ASME SAFETY RELIEF VALVE 1170-125 ASME Relief Valve (MCP12)

Description

Bell & Gossett cast iron and bronze body ASME Safety Relief Valves are engineered in accordance with the requirements of Section IV of the ASME Boiler & Pressure Vessel Code for Heating Boilers, and their capacities are certified by the National Board of Boiler and Pressure Vessel Inspectors. B&G diaphragm operated cast iron, and diaphragm-assist operated bronze ASME Safety Relief Valves, are designed to protect fired and unfired hot water vessels against overpressure conditions. The effective area of the EPDM diaphragm is approximately 5 times greater than some conventional “pop-type” relief valves. The diaphragms “oversized” effective area generates a greater operating force which helps to overcome the effects of fouling. Bell & Gossett ASME Safety Relief Valves feature a unique fail-safe disc with sufficient area to permit the valves to maintain their safety relief function in the event of a diaphragm rupture. The low differential between opening and closing pressures prevent conditions under which system water might flash into steam and cause hammering. Under normal operating conditions thermal expansion opens the valve allowing water to discharge at a low rate of flow. Under emergency conditions the valve will discharge its certified capacity. Bell & Gossett bronze ASME Safety Relief Valves offer the highest BTUH rating available in the marketplace for valves of their size. B&G ASME Safety Relief Valves are available in a wide range of pressure settings, other than those listed, to closely match the BTUH output rating of hot water heating boilers, direct fired hot water heaters (use bronze valves only), storage tanks with indirect heaters (use bronze valves only), and the BTUH load of heat exchangers and other pressure vessels handling water at a maximum pressure of 125 psi (8.6 bar) and maximum temperature of 250°F (121°C).