... length:1~7core Specifications1. R8040Cx2W,300PSI FRP Membrane housing side port2. Connection Type: 8040 side Port( ... manugacturing method of our FRP pressure vessel(membrane housing) is in accordance with the standard JC692 ... the pressure pf the FRP pressure vessel(membrane housing)is150,300,450,600,800,1000PSI. And ... ;3.The permeability test of the membrane housing with a way of using water pressure. ...