{"product_id":"non-return-valve-for-100lt-1s-020133","title":"Generic Valve Non Return For 100Lt","description":"\u003cp\u003eFor a standard 100L water geyser in South Africa, the non-return valve (NRV) is typically a 15mm brass spring-loaded non-return valve (rather than a 100mm industrial or drainage pipe valve).\u003c\/p\u003e\u003cp\u003e \u003c\/p\u003e\u003cp\u003eOptions \u0026amp; Common Choices\u003c\/p\u003e\u003cp\u003e• WALCRO 2150 Spring Loaded Brass Non Return Valve 15mm\u003c\/p\u003e\u003cp\u003e• Type: Spring-loaded brass check\/non-return valve\u003c\/p\u003e\u003cp\u003e• Size: 15mm (standard for 100L–150L geyser cold water inlets)\u003c\/p\u003e\u003cp\u003e• Where to look: Available via plumbing suppliers like Plumblink Non-Return Valve.\u003c\/p\u003e\u003cp\u003e• Av Non Return Valve 15mm CXC Brass\u003c\/p\u003e\u003cp\u003e• Type: Compression-by-compression (CXC) brass non-return valve\u003c\/p\u003e\u003cp\u003e• Size: 15mm\u003c\/p\u003e\u003cp\u003e• Where to look: Stocked by hardware and agricultural suppliers like Agrimark Non-Return Valve.\u003c\/p\u003e\u003cp\u003e• Brass Spring-Loaded Non-Return Valve 15mm (NR15)\u003c\/p\u003e\u003cp\u003e• Type: Standard 1\/2-inch \/ 15mm spring check valve\u003c\/p\u003e\u003cp\u003e• Where to look: Available through home improvement stores like Chamberlain Non-Return Valve.\u003c\/p\u003e\u003cp\u003e \u003c\/p\u003e\u003cp\u003eKey Installation Notes\u003c\/p\u003e\u003cp\u003e• Check the Flow Direction: Look for the stamped arrow on the valve body; it must point toward the geyser inlet so water can flow into the tank but cannot push back into the municipal mains.\u003c\/p\u003e\u003cp\u003e• Pressure \u0026amp; Safety Combo: A 100L geyser setup normally pairs the 15mm non-return valve with a pressure control valve (e.g., 400 kPa or 600 kPa) and vacuum breakers depending on your local installation layout.\u003c\/p\u003e","brand":"Generic","offers":[{"title":"Default Title","offer_id":68063018287417,"sku":"189020133","price":131.96,"currency_code":"ZAR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0910\/0243\/7945\/files\/189020133__20261112142846_d0b379b8.png?v=1794486612","url":"https:\/\/shop.nwk.co.za\/products\/non-return-valve-for-100lt-1s-020133","provider":"NWK Shop","version":"1.0","type":"link"}