1 1/4" Brass Horizontal Swing/Flap Check valve

A reliable 1 1/4" BSP brass swing/flap check valve designed to prevent backflow and back-siphonage in heating and hot water systems. Suitable for water and glycol solutions up to 30%.

• Size: 1 1/4" F BSP x F BSP
• Installation: Horizontal
• Maximum pressure: 16 bar
• Opening pressure: 0.05 bar
• Maximum temperature: 100°C
• Dimensions: H 47mm, L 76mm
• Suitable fluids: Water for thermal systems, glycol solutions (max 30%)
• Application: Backflow and back-siphonage prevention

Specifications

Female threaded connections (ISO 228-1) from G 3/8 to G 6. Rubber (series 060) or metallic seal (series 080). Valve body, plug and obturator in brass (bronze body for sizes G 5 and G 6); seals in NBR. Working temperature range (peaks): -20°C to 110°C; standard working range: 0°C to 95°C. Opening pressure: 0.05 bar. Maximum working pressure: 16 bar (G 3/8 to G 3), 10 bar (G 4 to G 6). Suitable fluids: water for thermal systems, glycol solutions (max 30%).

Installation

Swing check valves can be installed in either horizontal or vertical position, respecting the flow direction indicated by the arrow marked on the valve body. In horizontal position, the valve must be installed with the plug towards the top — otherwise the valve will not function correctly. In vertical position, the valve works only when flow comes from the bottom. Assembly onto pipes is done through threaded connections using standard plumbing practice.