Altecnic / Caleffi 253 Solar Series Pressure Safety Relief Valve 1/2" x 3/4" F x F 3 Bar - 253043

The Altecnic / Caleffi 312 Relief Valve - Pushfit - A312401CST is an essential component for domestic hot water systems, designed to safeguard hot water cylinders, as well as heating systems, including boilers and other critical components. This relief valve is specifically selected according to the required set pressure to ensure optimal performance. When the system pressure exceeds the predetermined discharge pressure, the valve activates, releasing excess pressure to the atmosphere. This vital function helps to prevent dangerous pressure levels that could potentially harm the boiler, hot water storage cylinder, and surrounding personnel.

**Specifications**

**Size:** 1/2" x 1/2"
**Connections:** 1/2" Pushfit Inlet x BSP Female Outlet
**Materials:** Brass
**Medium:** Air and Water
**Set Pressure:** 3 Barg
**Temperature Range:** +5 to +110 °C
**Product Code:** A312401CST
**Notes:** WRAS approved, CE marked, Pressure gauge included

Don't compromise the safety of your heating system – choose the Altecnic / Caleffi 312 Relief Valve today for reliable pressure regulation and protection.

### Product Specification **Sizes Available**: 1/2”, 3/4”, 1”, 1 1/4”, 1 1/2”, 2”, 2 1/2”, 3” **Connections**: Flanged DIN or ANSI, Tri-Clamp (ASME BPE), DIN 11864-2 Form A, DIN 11851 / 11864-1 **Materials**: Stainless Steel (35.2) **Disk Options**: Metal, Viton, or EPDM (FDA compliant) **Joints & Seals**: FPM, EPDM **Mediums Supported**: Steam, Gases, and Liquids **Set Pressure Range**: 0.2 to 16 Barg (depending on size) **Temperature Tolerance**: -50 to 100 °C **Design Notes**: The specified temperature range applies to valves featuring a metal disk. For reliable performance in various applications, our valves are crafted from high-quality stainless steel and are suitable for a range of mediums including steam and liquids. With multiple size and connection options, these valves are designed to meet diverse operational requirements while ensuring compliance with industry standards. Choose our durable and efficient valves for superior functionality in your system.

The Rhodes 901 Sight Glass with Flow Fingers is a versatile indicator tailored for equipment manufacturers and process plant operators. Featuring Rhodes’ innovative patented ‘flow fingers’, this product delivers accurate flow indication, ensuring reliable performance in various applications. The flow fingers are designed to provide a clear indication of both transparent and opaque liquids, even during slow and steady flow conditions. For added functionality, the 902 variant is equipped with a flow switch. Importantly, all Rhodes Sight Glasses are entirely manufactured in the UK, utilising locally sourced castings, unlike many competitors who rely on components from overseas. **Specifications:** - **Sizes Available:** 1/2" to 2" - **Connections:** BSPT, BSPP, NPT - **Materials:** Robust gunmetal body with mild steel covers - **Maximum System Pressure:** 16 Barg - **Temperature Range:** Up to 170°C - **Compliance:** Fully PED compliant and entirely UK-manufactured Choose the Rhodes 901 Sight Glass with Flow Fingers for a dependable solution in flow indication, engineered to meet the highest standards of quality and performance in the industry.