Altecnic / Caleffi Boiler Pressure Relief Valve 1/2

Altecnic / Caleffi Boiler Pressure Relief Valve 1/2" Pushfit x F Lever Top 3 Bar - 312408 BRT

The Altecnic / Caleffi Relief Valve - Pushfit Inlet - 312408 BRT is designed for use in domestic hot water systems, providing essential protection for hot water cylinders. Additionally, this relief valve safeguards heating systems, such as boilers and other critical components. The valve is chosen based on the required set pressure; as the pressure within the system increases and reaches the designated discharge pressure, the valve opens, releasing excess pressure to the atmosphere. This action prevents potentially dangerous pressure levels that could affect the boiler, hot water storage cylinder, and personnel nearby.

Product Specifications

Size: 1/2" x 1/2" Connections: Pushfit Inlet x BSP Female Outlet Materials: Brass Medium: Air and Water Set Pressure: 3 Barg Temperature Range: +5 to +110 °C Product Code: 312408 BRT

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Other Products and Services from Flowstar (UK) Ltd

Bailey Class T Pressure Reducing Valve

Bailey Class T Pressure Reducing Valve

The Bailey Class T balanced direct-acting pressure regulator is expertly designed for installations that experience fluctuating inlet pressures and capacities, providing a reliable positive shut-off during “no flow” conditions. This versatile standard valve is ideal for effectively controlling air, gas, and water.

**Specification**

**Sizes:** DN15 to DN50 (1/2" to 2")

**Connections:** Screwed BSPP Female

**Materials:** Bronze body, Rubber disc

**Medium:** Air, Gas, Water

**Inlet Pressure:** 17.2 Barg Max

**Outlet Pressure Range:** Up to 8.2 Barg Max (across multiple spring ranges)

**Temperature Range:** Air / Water -20 to 100 °C / Oil -20 to 90 °C

Optimise your system with the reliable performance and robust construction of the Bailey Class T pressure regulator, suitable for various applications where pressure control is vital.

Refrigeration Regulating & Shut-Off Valves

Refrigeration Regulating & Shut-Off Valves

**Essential Refrigeration Regulating and Shut-Off Valves for Commercial and Industrial Systems** Refrigeration regulating and shut-off valves play a crucial role in both industrial and commercial refrigeration systems, effectively managing the flow, pressure, and isolation of refrigerants such as ammonia (NH₃), CO₂, and a variety of hydrofluorocarbons (HFCs). **Product Specifications:** - **Sizes:** Available from 3/8" to 10" (size varies by type) - **Connections:** Options include Flanged, Screwed, Butt Weld, and Solder (type-dependent) - **Materials:** Constructed from robust Steel or Stainless Steel - **Refrigerants Used:** Suitable for glycol-based cold brine refrigerants in accordance with EN 378 p. 1, such as NH₃, R134a, R290 (propane), R507, and blends with refrigerant oil. They are compatible with neutral, gas, and liquid media, along with glycol-based cold brine. - **Set Pressure:** Available set pressures include PS 25, PS 40, PS 63, and PS 160 (type-dependent) - **Operating Temperature Range:** -60°C to +150°C - **Max Design Specifications:** [Please include any additional design notes or specifications here.] Optimise your refrigeration systems today with our high-quality regulating and shut-off valves, ensuring efficient operation and reliability. For further information and specifications, please don’t hesitate to get in touch.
CONCOA 305 Series Regulator

CONCOA 305 Series Regulator

Chrome-Plated Brass Barstock, Single Stage Cylinder Regulator for Inert Medical Laboratory Gas Applications

The CONCOA 305 Series regulator is designed for medical laboratory use. It provides point-of-use pressure control for gases in cylinders with pressures below 500 PSIG (35 BAR), or primary pressure control for inert gas applications that can tolerate minor outlet pressure fluctuations due to cylinder depletion. Like most CONCOA regulators, the 305 Series is rated for maximum inlet pressures of 3000 PSIG (210 BAR) or higher, depending on configuration.

The regulator can include a standard 2–15 LPM flow gauge calibrated for carbon dioxide, or a custom 2–15 LPM calibration for any non-corrosive gas or gas mixture. CONCOA uses a thermal mass flowmeter to size the outlet orifice according to the specific gas and desired flow. While the 305 Series features medical-standard inlet and outlet connections, it is not intended for therapeutic use in humans. For applications requiring constant outlet pressure or flow, CONCOA recommends the 315 Series two-stage regulator.

Features

  • 316L stainless steel diaphragm prevents inboard diffusion

  • CAPSULE® seat design with integral 360° filtration

  • Wide pressure delivery range: 0–15 PSIG (0–2 BAR) to 0–500 PSIG (0–35 BAR)

  • Optional 2–15 LPM flow gauge calibrated for carbon dioxide or a user-specified gas

  • Low wetted surface area reduces purge requirements

Specifications

  • Max inlet pressure (bare body): 3000 PSIG (210 BAR)

  • Body: Chrome-plated brass barstock

  • Bonnet: Chrome-plated, die-cast zinc

  • Gauges: 2 in (50 mm) diameter plated case

  • Seat: PTFE

  • Filter: 10-micron sintered bronze

  • Temperature range: -40°F to 140°F (-40°C to 60°C)

  • Diaphragm: 316L stainless steel

  • Cv: 0.1

  • Helium leak integrity: 1×10⁻⁸ scc/sec

  • Internal seals: PTFE

  • Ports (bare body): 1/4 in FNPT

  • Conformances: CGA G-4.1; PED 2014/68/EU; ANSI/ASME B40.1; CRN OH5216

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.