Overboard Valve

A Letter of Conformity (LoC) is an official document that verifies a product's compliance with established standards, regulations, or contractual obligations. This important certification is widely utilised across various industries, including manufacturing, engineering, construction, and international trade, ensuring that products meet necessary quality and safety benchmarks.

Introducing the NABIC 500T Combined Pressure and Temperature Relief Valve, expertly designed for unvented hot water supply systems that require both temperature and pressure protection. This innovative valve ensures optimal safety by allowing the pressure and temperature mechanisms to operate independently, thus delivering dual protection within a single unit. With the NABIC 500T, you can have peace of mind, backed by our industry-leading 5-year guarantee. **Specifications:** - **Sizes Available:** - 3/4" (DN15) - 1" (DN20) - 1¼" (DN25) - 1½" (DN32) - 2" (DN40) - 2½" (DN50) - **Connections:** - Male BSPT (Taper) Inlet - Female BSPP (Parallel) Outlet - **Materials:** - Gunmetal Body - Viton Seat - **Set Pressure:** - 1.0 to 12.5 Barg (DN15 to DN25) - 0.4 to 12.5 Barg (DN32 to DN50) - **Maximum Temperature:** - 95°C (Factory set at 95°C, non-adjustable) **Important Note:** The DN value embossed on the valve body indicates the NABIC 500 valve body size used in its construction and does not correspond to the inlet or outlet size. For instance, a valve with 1" connections (DN25) is built using a DN20 NABIC 500 valve body, hence the designation of DN20 on the valve's side. Upgrade your hot water supply system with the reliable NABIC 500T Combined Pressure and Temperature Relief Valve and experience unparalleled safety and performance.

Auld Valves Ltd has ceased trading. Please contact us to explore alternative options available in our product range. 

The Auld Vigilant Safety Valve features a blowdown characteristic ranging from 5% to 10%. It boasts a fully enclosed flow design with an external spring that remains unaffected by the process fluid or temperature. A soft face version is also available. This valve complies with normal lift designs according to BS759 and BS1500 standards. It achieves rated flow within 10% overpressure, ensuring optimal performance. With a robust construction and fully guided design, it minimises deformation and leakage, incorporating stainless steel trim for enhanced durability. Assembled from standardised components, this valve allows for easy maintenance. The springs conform to BS1726 class A specifications, providing a clean opening, stable performance, and reliable positive closing.