Full set of pipe orifice, valves, flanges and counter flanges, fasteners and all other attachments, all water release valves, gas release valves and safety valves.
全套管道孔板、阀门、法兰及反法兰、紧固件及其它所有附件，所有放水、放气阀门及安全阀。
2
Set pressure and orifice size determine valve capacity.
根据设置压力和节流孔通径来确定阀门的流容。
3
This article puts forward a complete set of evaluating method of resonance frequency and its peak in simple line with a chamber and restriction orifice at the end.