Features This is a check valve, which only allows water to flow in one direction. Made from high quality brass, this check valve is durable and strong. It is usually used for water, the pressure rating is 232 PSI. The internal thread with DN20 standard is ideal for many connections. It is convenient to use and easy to install, there is an arrow to show the direction. Item specifics: This is a check valve, which only allows water to flow in one direction. Made from high quality brass, this check valve is durable and strong. It is usually used for water, the pressure rating is 232 PSI. DN20 standard internal female thread is great for many connections. It is convenient to use and easy to install, there is an arrow to show the direction. Specifications: Material: brass Connection Form: Thread Structural Form: Swing Type Nominal diameter: DN20 Subject: 3/4BSP Suitable liquid: water Pressure: 232 PSI Flow direction: one-way Operating Temperature: Normal Temperature Quantity: 1 Weight: 180g (approx.) Package content: 1 * Check Valve Package List