Valve types, according to the sealing surface configuration can be divided into wedge gate-type valve and parallel to the gate-type valve, the valve's gate in a straight line along the stem, the name (also called the next bar gate). Usually in the lift rod with trapezoidal thread, through the valve body on top of the nut and the guide groove, the rotary motion into linear motion, that is, the operation of torque thrust into operation,
Valve features:
Light weight: body made of high grade cast iron ball black, lighter in weight than conventional gate weight of about 20% to 30%, easy installation and maintenance.
Flat-type gate seat: the traditional, often through water washing pipe valve for foreign objects such as after stone, wood, cement, iron, and other debris deposition on the valve end of the grooves, can not be closed easily lead to the formation of water leakage close , with resilient seated gate valves and pipes at the bottom of machine design with a flat, easy to siltation caused by debris, so that smooth flow.