Reliance RWC 500 Litre Aquasystem Potable Expansion Vessel Pre Set 3.5 Bar - XVES050150

The BESA 131 Safety Relief Valve offers a robust and versatile solution suitable for water, steam, and neutral non-viscous liquids. Crafted from durable materials including cast iron, carbon steel, or stainless steel, this valve features flanged PN16 or ANSI 150 connections and a metal seat (with alternative materials available upon request) to ensure reliable performance. With an extensive range of sizes and set pressures available, this safety relief valve is ideal for various industrial applications, providing safety and efficiency in system operations.

**Specification**

**Sizes:** 1/2", 3/4", 1", 1 1/4", 1 1/2", 2", 2 1/2", 3", 4" **Connections:** Flanged ANSI 150 or PN16 **Materials:** Cast Iron (G250), Carbon Steel (ASTM A216 WCB) or Stainless Steel (ASTM A351 CF8M) **Disk:** Metal (other materials available upon request) **Joints & Seals:** **Medium:** Water, Air, Steam, other neutral liquids, gases, and vapours **Set Pressure:** 0.2 to 40 BarG (depending on size and flange rating) **Temperature:** Please contact us for temperature limitations on this valve **Design:** PED, ATEX, GOST, RINA **Notes:** Head Type: Gas-tight cap. Open lever and closed lever options are available.

Invest in the BESA 131 Safety Relief Valve for dependable safety and performance in your industrial systems.

Features & Benefits

• Constructed from robust iron for an extended service life

• Offers precise flow regulation for optimal performance

• Fully-lugged design for easy installation and operation

• Ensures positive flow control across all settings

Specification

• Complies with BS EN 593: 2009 standards

• Valves measuring 250mm and above come with a gearbox only

• Valves up to and including 200mm can be supplied with either a lever or gearbox operation

• All operators are equipped with a double regulating feature

Pressure/Temperature Rating

• EPDM seat material

• Rated for 16 bar pressure from -10 up to 120ºC

The AURA EX2 regulator is meticulously crafted to provide precise and consistent primary pressure control for gases or liquids, accommodating inlet pressures of up to 6000 psig. Unlike standard regulators, the EX2 is specifically designed for applications where even slight fluctuations in outlet pressure due to diminishing inlet pressures are intolerable. At the heart of the EX2 lies AURA’s innovative dual encapsulated seat design, which merges multiple moving internal components into a single comprehensive unit. This advancement minimises maintenance needs, eliminates common failure points, and enhances long-term reliability. Each encapsulated seat is protected by a 10-micron, 360° filter, ensuring superior particle filtration compared to conventional pressed-in disks. Unlike typical regulators that filter solely through the pipeline port, the EX2 safeguards against harmful particles from all inlet ports. A diverse selection of seat materials and orifice sizes guarantees optimal performance across a range of demanding applications. AURA’s precision machining process provides metal-to-metal seals that ensure the highest level of leak integrity while achieving ultra-smooth surface finishes of 4–25 Ra to minimise corrosion. The regulator’s compact internal volume also cuts purge gas consumption, resulting in improved operational efficiency. Every EX2 is assembled within a Class 100 cleanroom, inclusive of all gauges, fittings, and valves. Each unit undergoes thorough cleaning for oxygen service, is subjected to 100% helium leak testing, and passes multiple flow and function tests, ensuring unparalleled purity, durability, and reliability. For environments that are highly corrosive, the EX2 is available with Dursan® LS inert coating technology, offering exceptional resistance to acidic and caustic media, frequently outperforming exotic alloys. This makes the EX2 a dependable choice for critical applications.