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IMI Bopp & Reuther
Si 6 - High Flow Safety Valve
High-capacity safety valve for steam, gas, and liquid systems with full nozzle and bellows options.
Provides reliable pressure relief in high-capacity and high-pressure industrial applications.
Enhances safety and efficiency with solid nozzle, low blowdown, and lift optimisation.
Offers broad compatibility with optional bellows and wide temperature and pressure ranges.
Features
The IMI Bopp & Reuther Si 6 High Flow Safety Valve provides reliable overpressure protection for steam, gas, and liquid applications in power, chemical, and process industries. Designed for high-capacity discharge, it supports pressures up to 250 bar and operates across a wide temperature range from -270°C to 550°C. The solid nozzle design ensures long-term durability, while an optional bellows allows for effective backpressure management and improved lift control. With low blowdown characteristics and compliance to PED and DIN/EN standards, the Si 6 is an ideal solution for safe and efficient system protection in extreme service environments.
Key features
Suitable for steam, gas, and liquids
DN 25 to DN 400
-270°C to 550°C
Up to 250 bar
Solid inlet nozzle
Optional bellows
Low blowdown
High discharge capacity
PED and DIN/EN certified
Customisable to system requirements
Specifications
Fluid Types
Liquid
Gas
Vapour
Material (EN)
EN 1.0619
EN 1.7357
EN 1.4408
PN Rating (PN)
400
Maximum Set Pressure (barg)
250
Material (ASME)
ASME WCB
ASME WC6
ASME CF8M
Inlet Size (DN)
25
400
Design Codes
EN
Temperature Limits (°C)
-270 to 550
Max. ASME Rating
2500
Certification
PED
Service Category
General
Resources
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