Xylem-Bell & Gossett 110131 Pressure Relief Valve 1" 45 PSI 1,575,000 BTUH

The Xylem-Bell & Gossett 110131 (Model 1170-45) is an ASME-certified safety relief valve designed to ensure the safe operation of hydronic heating systems, boilers, and HVAC applications. This brass ASME safety relief valve features 1" threaded NPT connections and is set to relieve at 45 PSI.

Key Specifications:

• Maximum capacity: 1,575,000 BTU/hr
• Relief pressure: 45 PSI
• Connection size: 1" NPT inlet and outlet
• Bronze body construction with EPDM seat
• Maximum temperature rating: 250°F
• Compact dimensions: 2-7/8" L x 4-15/16" H

Features & Benefits:

• Engineered in accordance with ASME Section IV requirements for heating boilers
• Unique fail-safe disc maintains safety relief function even in the event of diaphragm rupture
• Diaphragm-assist operation protects fired and unfired hot water vessels from overpressure conditions
• Prevents system overpressure, reducing the risk of accidents and equipment failure
• Maintains optimal pressure levels for improved energy efficiency and performance

Ideal for hydronic heating systems, boiler applications, and various HVAC configurations where pressure relief is critical to operational safety and system integrity. Backed by Bell & Gossett's century-long reputation for quality and innovation in the commercial building services industry.