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 = -20degC to 110degC, 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.