The manual shut-off valve features a cast valve body with heavy wall sections for wear. The main body is designed with a round to square transition sized to equalize concrete velocity through the valve. Teflon valve packing seals are easily adjusted to control leakage and can be replaced without disassembly of the valve. Maximum rated working pressure is 400ft. and/or 122 meters (28bar/400psi) vertical rise of concrete line. The same features can be found on our Hydraulic Shut-Off valve V50HSB and V60HSB. The hydraulic version uses a single cylinder to achieve valve closure.