Brass BSP internal thread one-way check valve with double movable joints for water Key benefits - Prevents backflow to protect water supply, pumps, meters and downstream equipment - Brass construction provides durability and corrosion resistance for long service life - BSP internal thread in multiple sizes supports flexible integration with standard piping - Two movable joints deliver smooth operation and reliable sealing - Simple, one-way operation with no external power required Product features - Material: Brass - Connection: BSP internal thread - Sizes available: 20 mm, 25 mm, 32 mm, 40 mm, 50 mm, 63 mm - Function: One-way check valve for water - Mechanism: Double movable joints for improved performance and seal integrity Compatibility and sizing - BSP internal thread options cover common plumbing and piping configurations - Suitable for water systems in residential, commercial, and light industrial settings - Provides a straightforward path for flow in the intended direction while blocking reverse flow Performance highlights - Reliable one-way operation to guard against backflow in water lines - Durable brass body with two movable joints supports repeated cycling - Compatible with standard BSP threaded fittings in the listed diameters Applications and use scenarios - Domestic water supply: protects household pumps and appliances from backpressure and contamination - Garden irrigation and sprinkler systems: prevents backflow when pumps or controllers cycle on and off - Pump discharge and piping loops in small to medium scale plumbing, HVAC and cooling systems: ensures unidirectional flow and protects downstream equipment Installation notes - Choose the appropriate size for your BSP threaded connection - Ensure proper threaded sealant or tape as required by fittings and local codes - Verify flow direction to ensure correct one-way operation after installation Specifications at a glance - Material: Brass - Thread type: BSP internal thread - Available sizes: 20, 25, 32, 40, 50, 63 mm - Function: One-way check valve for water - Feature: Double movable joints for reliable operation