Bell & Gossett 110034 - 4100-30 ASME Safety Relief Valve, 2" NPT, 30 PSI Set, 4,100,000 BTU/hr

Bell & Gossett 110034 - 4100-30 ASME Safety Relief Valve, 2" NPT, 30 PSI Set, 4,100,000 BTU/hr

Product Highlights

• Valve Size: 2" x 2" (Inlet x Outlet)

• Set Pressure: 30 PSI

• Capacity: 4,100,000 BTU/hr

• Material: Cast Iron Body with Brass Internals

• Connection Type: Threaded NPT (2")

• Application: Hot Water Heating Systems

• Certification: ASME Section IV, National Board Certified

Overview

The Bell & Gossett 110034 (Model 4100-30) is a high-capacity ASME safety relief valve designed to safeguard hot water heating systems from dangerous overpressure. Built from durable cast iron with brass internal wetted parts, this valve offers exceptional performance, long service life, and a BTU capacity among the highest in its class.

This relief valve is engineered to meet Section IV of the ASME Boiler and Pressure Vessel Code and is certified by the National Board of Boiler and Pressure Vessel Inspectors. It features a diaphragm-operated EPDM seat that delivers an effective area approximately 5 times larger than conventional pop-type valves, significantly reducing fouling and ensuring reliable operation.

A low pressure differential between opening and reseating also minimizes water flashing and prevents water hammer conditions.

Key Features

• High BTU rating: 4,100,000 BTU/hr

• 30 PSI factory set pressure

• Designed for 2" inlet and outlet piping systems

• Cast iron body for strength and durability

• EPDM diaphragm and seat for superior performance

• Ideal for fired and unfired hot water vessels

• Certified for ASME Section IV Heating Boilers

• Threaded NPT connections for quick installation

Specifications