Z545 Valve Description: Product Name: Z545 Valve Products: Z545 gate valve stem together with a linear transport z41h moving wedge gate valve flange, also called clear shot valve. Z545 riser valve usually has a trapezoidal thread, steel gate valve through the valve at the top of the nut and valve guides on the rotary motion into linear motion, which is the operating torque thrust into action. Open the valve, when the gate valve lift height equal to the diameter of the 1: 1 times, the fluid channel is completely smooth, but at run time, this position is not monitored. Actual use, is the apex of the stem as a sign that the fixed position, as its fully open position. Temperature appears to consider locking phenomenon, usually open to the vertex position, and then rewind 1 / 2-1 circle, as the position of the valve fully open. Therefore, the fully open position of the valve, according to gate position (ie, travel> to determine. Some valve stem nut is located at the gate, handwheel drive stem rotation, leaving the gate to upgrade, this valve is called rotating rod valve or valve called the dark bar light weight characteristics: body made of cast iron with advanced ball black, lighter in weight than traditional gate about 20% to 30%, easy installation and maintenance flat type brake seat: traditional gate often pass after washing tube because foreign objects such as stones, wood, cement, iron, silt and other debris in the valve bottom groove, can not be closed tight and likely to cause the formation of water leakage, resilient seated gate valve at the bottom of the pipe using the same machine flat design, easy to siltation caused by debris, making the overall package of plastic flow unimpeded: gate using high quality rubber within the overall outsourcing glue, Europe's leading rubber vulcanization technology makes the gate after curing to ensure accurate geometry and rubber and ductile gate then solid, not falling, and good elastic memory Source:. http: //www.bxgst.net/zfax/1239.html