Altecnic / Caleffi 253 Solar Series Pressure Safety Relief Valve 1/2" x 3/4" F x F 4 Bar - 253044

**PREL102001 Reliance Water Controls (RWC) 102 Series Potable Water Pressure Relief Valve** The PREL102001 Reliance Water Controls (RWC) 102 Series potable water pressure relief valve is engineered to discharge excess water from your system when cold water pressure exceeds a predetermined level, safeguarding unvented cylinders from over-pressurisation. The 102 Series Potable Water Pressure Relief Valves by Reliance are specifically designed to protect unvented systems against excessive pressure build-up. Pre-set and locked at a specific pressure, these valves will lift from their seat and allow water to discharge to waste if the system pressure exceeds this limit, acting as a primary safety device within unvented configurations. Featuring a robust single-piece cartridge construction, the pressure relief valves are available in a range of pressure settings from 3.5 to 8 bar, along with various connection sizes to facilitate adaptable installation. **Features and Benefits:** - Quick and easy removal of the single-piece cartridge for straightforward cleaning or replacement - Advanced diaphragm design for enhanced scale resistance - Essential protection against over-pressurisation - Versatile connection options for flexible installation - Adjustable relief pressure range from 3.5 to 8 bar - Specifically designed for cold water applications only **Specifications:** - Size: 1/2" x 1/2" - Connections: BSP Female Inlet x BSP Female Outlet - Materials: Hot-pressed DZR Brass - Medium: Cold Water - Set Pressure: 6 Barg - Temperature Rating: +140°C - Product Code: PREL102001 Choose the PREL102001 Reliance Water Controls 102 Series Pressure Relief Valve for reliable protection and durability in your unvented water systems. Ensure your peace of mind with a valve designed for optimal performance and easy maintenance.

Four-port, electroless nickel-plated forged brass, single-stage regulator for highly corrosive gases

The CONCOA 455 Series regulator is designed for primary pressure control of highly corrosive gases such as chlorides, sulfides, and other acid-forming gases. It features a Dursan®-coated capsule and diaphragm, providing superior corrosion resistance compared to 316L stainless steel or exotic metals like Hastelloy®. For fluorine service, a passivated stainless steel CAPSULE® and diaphragm create a fully resistant assembly. Deep purge assemblies are recommended to prevent moisture from forming acids in the gas stream.

Features:

• Dursan® internals for enhanced corrosion resistance

• CAPSULE® seat with 360° integral filtration

• Captured vent protects against diaphragm failure

• Spectrometric helium leak-checked for integrity

Specifications:

• Max inlet pressure: 3000 PSIG (210 BAR)

• Body/Bonnet: Electroless nickel-plated forged brass

• Gauges: 2½ in (63 mm) Monel®

• Seat: PTFE

• Nozzle: 316L stainless steel (passivated) or Dursan® (non-passivated)

• Filter: 10-micron stainless steel or Dursan® mesh

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

• Diaphragm: 316L stainless steel (passivated) or Dursan® (non-passivated)

• Cv: 0.2

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

• Ports: 1/4 in FNPT

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

**Product Description** Gate valves are specifically engineered for on-off service applications. These valves comprise a body, bonnet, gate, stem (featuring an internal screw and yoke), a rising stem equipped with a non-rising handwheel, and an integral seat as standard. Additionally, there are options available for renewable seats, along with an open and closed indicator, complete with a lockable handwheel. --- **Features** Gate valves provide reliable shutoff capabilities with minimal pressure drop, rendering them perfect for regulating liquid or gas flow across diverse applications. Their sturdy construction promotes high efficiency and easy maintenance, thanks to their uncomplicated design. Gate valves can be manually operated or automated using devices such as motors, solenoids, or actuators. When the gate is in the closed position, it serves as an effective barrier, preventing flow. In contrast, when opened, the gate retracts from the seat, permitting unrestricted flow through the valve. Once closed, fluid movement is entirely halted. --- **Materials** - **Body/Bonnet**: NAB (ASTM B148 C95800) - **Stem**: NAB (ASTM B150 C63200) / MONEL (ASTM B865 N05500) - **Handwheel**: Stainless Steel (ASTM A351 CF8M) --- **Technical Data #150/PN32** - **Design Standard**: MSS SP 80 / BS 5154 / BS EN 12288 - **Size**: DN15 to DN80 - **End Connection**: ASME B1.20.1 - **Face To Face**: As per manufacturer specifications - **Testing**: EN 12266-1, API 598 - **Max Pressure**: 19 / 32 BAR - **Min Temperature**: -29°C / -10 to 66°C - **Max Pressure**: 7.9 / 14 BAR - **Min Temperature**: 260°C - **Material Test Certification**: BS EN 10204-3.1 --- **Technical Data #300** - **Design Standard**: MSS SP 80 / BS 5154 / BS EN 12288 - **Size**: DN15 to DN80 - **End Connection**: ASME B1.20.1 - **Face To Face**: As per manufacturer specifications - **Testing**: EN 12266-1, API 598 - **Max Pressure**: 49.6 BAR - **Min Temperature**: -29°C - **Max Pressure**: 20.6 BAR - **Min Temperature**: 260°C - **Material Test Certification**: BS EN 10204-3.1 --- Optimise your operations with our premium-quality gate valves, designed for durability and efficiency. Perfect for a wide range of industrial applications, they ensure perfect control over fluid flow while adhering to essential safety and performance standards.