Safety Valve

1) SMU-7000 Safety Refief Valve

This range of spring loaded conventional and balanced safety relief valves is specifically designed for overpressure protection of unfired pressure vessel (ASME Section VIII application). Sizes and orifices are from 1” D 2” to 8” T 10”, face to face dimensions are in accordance to API526. Available set pressure range is from 0.4 Bar to 414 Bar, and for pressure ratings up to 2500#.

 Media: Gas, Steam and Liquid.

Orifices: from “D” to “T” in accordance to API 526;

Size:  Inlet –1” to 8” , Outlet –  1½”” to 12”

Set pressure range: From 0.4 bar to 414 Bar.

Temperature range: From -267 Deg C to 715 Deg C.

Over pressure: Gas 10%, Steam 5% & 10%, Liquid 10% & 21%.

Blowdown: Gas and Steam 5% to 7%

Materials: Carbon Steel, Alloy Steel, Hastelloy, Monel and other material upon request.

Options: Bellows, Flushing nozzles, Lifting lever, Test gag, Finned Bonnet, Limit Switch, Resilient or Hardened seat.

·         The Model SMU 7000 is approved by Indian Boiler Regulation 1950.

·         Full Nozzle & Full Lift Design.

SMU-7000

Installation for SECTION VIII requirement for Unfired vessels, applicable for Gas , Liquid , Steam & biphase

2) Pressure Relief Valve SMFN-7000, SMF-7000, SMF*-7000 & SU-7000

This product range is mainly used for Thermal Relief application but thanks to the certified coefficient of discharge for gas and liquid it can be used also for pressure relieving application.

Types SMFN-7000 covers the application where users have preference for screwed connection.. Type SU-7000 has flanged end connections with an integral casted body.

Media: Gas, Steam and Liquid.

Over pressure: Gas and Steam and Liquid 10%, 21%.

Blowdown: Gas and Steam 5% to 7% & less than 21% for Liquid.

Orifices: from “b” to “f”.

Size:  Inlet – ½” to 1” and Outlet – 1” to 1½”

Set pressure range: From 0.8 bar to 400 bar (for Gas), up to 1500 bar for Liquid.

Temperature range: From -200 °C to 400 °C.

Materials: Carbon Steel, Alloy Steel, Hastelloy, Monel and other material upon request.

Options: Bellows, Flushing nozzles, Lifting lever, Test gag, Resilient or Hardened seat

Design Codes: API-520, API-521, API-526, API-527, ASME-B 16.34, ASME-B 16.5, ASME-Section VII

·         The Model SMFN-7000, SMF-7000, SMF*-7000 & SU-7000 is approved by Indian Boiler Regulation 1950.

·         Full Nozzle & Full Lift Design

SMF/SMFN/SMF*-7000

SU-7000

Installation of any SECTION VIII requirement for Unfired vessels , Thermal Relief application.Fluid can be handled Gas , Liquid , Steam & biphase

3) SMS-7100 Safety Valve for Steam Boiler

The SMS-7100 direct spring operated pressure relief valves has been designed to protect against excess pressure steam boilers and to provide superior performance.

These valves are designed and manufactured according to ASME Sect. I and are approved according to IBR 1950 regulation. 

Double blow-down ring guarantees the over-pressure and the reseating-pressure required on section I of the ASME code. Special design of the disc eliminates the distortion due to thermal stress for maximum seat tightness. Available with open or closed bonnet.

Flanged, Butt weld spring loaded, direct acting, full nozzle safety relief valves for steam service (ASME Sect.I).

Media: steam (suitable also for gas).

Orifice Sizes: From “D” to “T “

Set pressure range: up to 153 bar.

Temperature range: up to 566 °C.

Overpressure: 3% or 0.14 bar.

Blowdown: 4% or 0.28 bar.

Size: Inlet from  1” to 8”  Outlet from NPS 2” to 12”

Inlet flanges ratings: Up to Class 2500.

·         Valve bodies are heavy duty design

·         Full nozzle design

·         Flanges can be manufactured according to a wide range of standards

·         Dual blow-down ring for more precise performance: 3% over pressure and 4% blow-down

·         All pressurized parts are hydraulically tested

·         Seats lapped to optical flatness for tight shut-off

·         The high flow coefficients allow the most economical sizing of the valve

·         Among foreign certifications

·         Ease maintenance

·         Proven reliability

SMS-7100

Installation for ASME SECTION I requirement for Fired vessels , Boiler Drum , Superheater , Economiser