Pressure Relief Valve (Safety Valve)
Serving as the ultimate safety device, GM Dalui Pressure Relief Valves protect systems from overpressure hazards. Designed to open automatically when the pressure exceeds the set point, they discharge excess fluid to relieve pressure.
Introduction
GM Dalui specialty valves are designed for unique and demanding applications requiring customized solutions beyond standard valve types. They provide tailored safety functionality like high overpressure relief.
Key Features
- Precision machined nozzle and disc for bubble-tight seat sealing.
- Spring setting calibrated and tested to precise user specifications.
- Bellows design option for backpressure compensation.
- High discharge capacity certified per ASME/API standards.
- Available with lifting lever for manual testing.
Technical Specifications
| Design Feature | Standard Parameters / Range Options |
|---|---|
| Nominal Size Range | Up to 250 mm |
| Manufacturing Standards | API 526, ASME Section VIII, ISO 4126 |
| Material of Construction (MOC) |
|
| Pressure Ratings | 1.0 / 1.6 / 2.0 / 2.5 / Class 150# / 300# / 800# |
| Modes of Operation | Spring Loaded / Pilot Operated (Automatic Safety release) |
| End Connections | Flanged inlet/outlet or Threaded |
| Application Media | Overpressure safety on boilers, pressure vessels, pipelines, gas tanks. |
Application & Usage of Pressure Relief Valve (Safety Valve)
Industrial Boiler Plants
Acts as the ultimate safety pressure release valve to vent excess steam and prevent catastrophic failure.
LPG/LNG Gas Terminals
Protects storage tanks and vaporizers from thermal expansion and overpressure conditions.
Main Pipeline Buffers
Absorbs water hammer surges by quickly venting excess pipeline pressure during pump trips.
Types of Safety Relief Valves
Spring Loaded Safety Valve
Features calibrated safety spring mechanisms that open automatically at set pressures to discharge excess volume. Size: 50-600 mm.
Three-Way Safety Valve
Enables switching between safety relief loops for uninterrupted system protection during maintenance.
Four-Way Diverting Valve
Made from durable materials like stainless steel and brass, allowing for complex flow path redirection.
Certificates & Inspection
All valves are subjected to rigorous hydrostatic shell and seat pressure testing in accordance with standard codes (e.g., API 598 / IS 14846) prior to delivery.
- Physical dimension and wall-thickness checks
- Hydrostatic seat and shell test validation
- Manufacturer Test Certificate (MTC) and third-party inspection (SGS, TUV, RINA, IRS etc.) available
- Epoxy powder coating inspection (DFT test)
Quality Assurance
GM Dalui & Sons Pvt. Ltd. is an ISO 9001:2015 certified manufacturer. Our commitment to safety, reliable sealing, and long service life is backed by rigorous material inspection, ultrasonic wall thickness checks, and design calculations.
We customize flow control systems to meet specific requirements for municipal waterworks, agricultural pumping wells, chemical distribution loops, and thermal power plant grids.