Easy Setup: Brass Vertical check valve is effortless to install and with stainless steel spring. You can install it without any lubrication and materials.check valve is lightweight, convenient to transport and handle. ★Corrosion Free: Brass valve is a long-lasting product and corrosion-free for a long time working. You can use it for a long time under the right conditions and its very easy to replace anytime. ★Fabulous Performance: Check valve protects the system correctly and decreases the risk of water hammer and pressure loss. ★About Product: Diameter =1/2 inch, Working pressure =25bar/362.5psi, Weight =144g per valve, Working Temperature = -20°C to 110°C, Standards: BS6755&BS7438 with friendly customer service. ★Heavy Duty: Brass Vertical check valve contains zinc, and copper and copper make its major part due to which it has tuff nature and increase flow speed.