Reliance RWC 104 Series Pressure Relief Valve 1.1/2

Reliance RWC 104 Series Pressure Relief Valve 1.1/2" x 2" F x F 6 Bar - PREL104012

The PREL104012 High Capacity Potable Water Pressure Relief Valve discharges water off the system at a set pressure in the event of cold water over pressurisation to an unvented cylinder (high flow for larger capacity systems) Reliance Valves 104 Series High Capacity Potable Water Pressure Relief Valve is a high capacity range of pressure relief valves designed to protect an unvented system from over pressurisation. The valves are pre-set and locked to a particular pressure, and if the system exceeds this pressure the valve will lift off the seat and water will discharge from the valve to the waste. The outlet connection is one size larger than the inlet to guarantee the valve will be able to cope with a high capacity discharge. This is the first safety device in line within an unvented system. The valves are available in different pressures ranging from 3.5 - 8 bar, as well as multiple connection sizes to allow for flexible installation. 

Features and benefits: 

- High flow design for larger capacity systems 

- Rapid removal of single piece cartridge for cleaning or replacement 

- Diaphragm design gives improved resistance against scale 

- Protects against over pressurisation 

- Multiple connections for flexible installation 

- Set relief pressure range from 3.5-8.0 bar 

- Suitable for cold water use only 

Specification

Size: 1.1/2" x 2"Connections: BSP Female Inlet x BSP Female OutletMaterials: Hot pressed DZR BrassMedium: Cold waterSet Pressure: 6 BargTemperature: +140 degCProduct Code: PREL104012

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Altecnic / Caleffi 311 Series Safety Relief Valve 1/2

Altecnic / Caleffi 311 Series Safety Relief Valve 1/2" x 1/2" F x F 8 Bar - 311480 Altecnic / Caleffi 311 Series Safety Relief Valve 1/2" x 1/2" F x F 8 Bar - 311480

The Altecnic / Caleffi 311 Safety Valve - 311480 are used in domestic hot water systems to protect the hot water cylinder and in heating systems to protect boiler and other components. The valve is selected for the required set pressure. As the pressure rises, when the discharge pressure is reached the valve opens and discharges to atmosphere, preventing the pressure within the system reaching levels which would be dangerous for the boiler, hot water storage cylinder and any personnel in the adjacent vicinity. 

Specification

Size: 1/2" x 1/2"Connections: BSP Female Inlet x BSP Female OutletMaterials: BrassMedium: Air and WaterSet Pressure: 8 BargDischarge Flowrate: 322.7 kg/hrMax Boiler Rating: 187.5 kWTemperature: +5 to +110 degCProduct Code: 311480Notes: WRAS approved, CE marked

Niezgodka Type 5 Relief Valve

Niezgodka Type 5 Relief Valve

**Product Specification** **Size:** 1/4" x 3/8", 3/8" x 3/8" **Connections:** Screwed BSPP (NPT and Ermeto available upon request) **Materials:** Stainless Steel **Orifice Size:** 8mm **Disk Material:** EPDM for pressures between 0.40 to 2 Barg; Viton for all other pressures **Joints & Seals:** NBR, FPM, EPDM (varies by model) **Medium Compatibility:** Suitable for Steam, Gases, and Liquids **Set Pressure Range:** 0.4 to 200 Barg (subject to size) **Operating Temperature:** -40 to 130 °C **Notes:** For further details on compatibility and model-specific features, please contact us directly.
FSHIPDH - Rupture Disc Holder

FSHIPDH - Rupture Disc Holder

The FSHIPDH Rupture Disc Holder is engineered to provide maximum reliability for rupture discs, delivering several key benefits. It is easy to install, even in situations where access to pipes is horizontal, and allows for the verification of correct installation. Upon request, these disc holders can be tested in our laboratories and are available pre-assembled with their respective rupture discs, ready for direct integration into your system.

Specifications

Compatible Discs: FSSTD, FSDCD, FSSCD

Sizes: Ranging from 1" (DN25) to 40" (DN1000)

Materials: Carbon steel, Stainless steel (316L), Alloy 201, Alloy 400, Alloy 600, Alloy C276, Titanium, Tantalum

Linings: Available (PTFE or glass fibre reinforced PTFE)

Accessories: Nipples, T connectors, excess flow valves, pressure gauges

Download our Rupture Disc Request Form. Once completed, please send it to sales@flowstar.co.uk.

Flowstar UK Ltd

Flowstar (UK) Ltd

Wiltshire Road, Kingston-upon-Hull, East Riding of Yorkshire, HU4 6PA, United Kingdom

Flowstar (UK) Ltd is a leading global supplier of safety, relief, and reducing valves. With strong partnerships across major manufacturers, we deliver precise, reliable valve solutions tailored to your needs. Email enquiries to sales@flowstar.co.uk or call us on +44 (0)1482 601030.