Description
Bell & Gossett 110126 Relief Valve – 3/4", 100 psi Set, 2,075,000 BTU/hr
Overview
The Bell & Gossett 110126 (790-100) is an ASME-certified bronze relief valve designed for use in hydronic heating systems. With a 3/4" threaded connection and a set pressure of 100 psi, this valve delivers a powerful discharge capacity of 2,075,000 BTU/hr, making it ideal for protecting fired and unfired hot water vessels from overpressure conditions.
Its EPDM diaphragm-assisted design improves reliability, reduces fouling, and minimizes the differential between opening and closing pressure—helping to prevent dangerous flashing or system hammering.
Key Features
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Certified to ASME Section IV – Complies with standards for heating boilers
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High BTU discharge – Up to 2,075,000 BTU/hr capacity
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Diaphragm-assisted operation – Superior flow and performance
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Brass and EPDM internals – Built for long service life
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Threaded connections – Easy installation into existing piping
Specifications
| Feature | Details |
|---|---|
| Model | 110126 / 790-100 |
| Connection Size | 3/4" |
| Set Pressure | 100 psi |
| Discharge Capacity | 2,075,000 BTU/hr |
| Material | Bronze |
| Connection Type | Threaded (NPT) |
| Max Working Pressure | 125 PSIG (8.6 bar) |
| Max Operating Temperature | 250°F (121°C) |
| Diaphragm & Seat Material | EPDM |
| Wetted Parts | Brass |
| Application | Hydronic Heating Systems |
| ASME Certified | Yes |
