Safety & Relief Valves

Safety and relief valves are automatic pressure-protection devices that open to relieve excess pressure and protect pressure vessels, boilers and piping systems from overpressure damage. Navjivan Valves supplies spring-loaded and pilot-operated safety relief valves, including Forbes Marshall safety relief valves (FMSRV).

Pricing: Price on Request. Safety & Relief Valves pricing depends on size, pressure class, material and order quantity — contact us for a tailored quotation.
Safety & Relief Valves supplied by Navjivan Valves

Product Overview

A safety or relief valve opens automatically once system pressure exceeds a pre-set value, discharging fluid to relieve the excess pressure, then re-closes once pressure returns to a safe level. These valves are a critical last line of defence in boiler, steam, compressed air and process systems, and are typically selected, sized and certified in line with the pressure vessel or boiler code applicable to the installation.

Types

Types of Safety & Relief Valves

Spring-Loaded Safety Valves — Navjivan Valves

Spring-Loaded Safety Valves

Use a calibrated spring to hold the valve disc closed until system pressure exceeds the set pressure, opening automatically to relieve excess pressure — the most common safety valve design for steam and general process use.

Pilot-Operated Safety Valves — Navjivan Valves

Pilot-Operated Safety Valves

Use a small pilot valve to control the opening of a larger main valve, offering tight seating up to the set pressure and often preferred for larger relieving capacities or where tight operating margins are required.

Forbes Marshall Safety Relief Valves (FMSRV) — Navjivan Valves

Forbes Marshall Safety Relief Valves (FMSRV)

A recognised safety relief valve range supplied by Navjivan Valves for steam and process pressure-protection applications.

Specifications

FunctionAutomatic overpressure protection for boilers, vessels and piping
OperationSpring-loaded or pilot-operated, fully automatic
Typical ServiceSteam, air, gas and process fluids
Brand AvailableForbes Marshall Safety Relief Valve (FMSRV)

Specifications reflect the products currently supplied by Navjivan Valves. Exact availability may vary by size and material — please confirm with our team for your specific requirement.

Applications

  • Boilers & Steam Systems
  • Pressure Vessels
  • Power Generation
  • Process Piping
  • Compressed Air Systems
  • Petrochemical Plants

Materials of Construction

Safety and relief valves are available in body materials and set-pressure ranges selected to match the fluid, pressure system and applicable code requirements of the installation.

Advantages

Key Features

  • Automatic, code-driven overpressure protection with no manual intervention
  • Spring-loaded designs suited to general steam and process protection duty
  • Pilot-operated designs for tighter seating margins and larger capacities
  • Recognised Forbes Marshall FMSRV range available through Navjivan Valves
FAQs

Frequently Asked Questions

What is the difference between a safety valve and a relief valve?
The terms are often used together as "safety relief valve." A safety valve typically pops fully open once set pressure is reached (common on compressible gas/steam service), while a relief valve tends to open proportionally to overpressure (common on liquid service). Many industrial valves are designed to perform both functions.
How is the correct set pressure determined?
Set pressure is determined by the design pressure of the protected vessel, boiler or pipeline and the applicable code — this should always be specified by the plant's process or safety engineer, not selected arbitrarily.
Does Navjivan Valves supply Forbes Marshall safety valves?
Yes — Navjivan Valves supplies the Forbes Marshall Safety Relief Valve (FMSRV) range alongside other spring-loaded and pilot-operated safety valves.

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