Features And Functions Of Corrugated Pipe Reducing Valve
Structure and function
Mainly constituted by the seat and disc steelball, corrugated pipe assemblies, springs, through adjusting spring setting outlet pressure, when the outlet pressure reducing the disc open larger, when the outlet pressure reach the predetermined pressure,disc opening decreases, mainly through the back-valve pressure of the medium of the valve effect on the corrugated pipe area sensing adjusting spring to reducing and stabilizing pressure.
Use rotation handwheel can adjust pressure, connecting convenient, dispense with installation tools. Internal structure using bellows, seal with screen protection device, does not damage easily internal parts, greatly improving longevity.
Main tecal parameter and performance norm
| nominal pressure Mpa | 1.6 |
| casing test pressure Mpa | 2.4 |
| sealing test pressure Mpa | 1.76 |
| Max. inlet pressure Mpa | 1.6 |
| outlet pressure range Mpa | 0.05-1.0 |
| pressure performance deviation Mpa△P2P | GB12244-1989 |
| flow performance deviation Mpa△P2P | GB12244-1989 |
| Min. pressure difference Mpa | 0.15 |
| leakage quantity | GB12244-1989 |
| applicable medium | water,steam,air,liquid |
| working temperature | ≤220℃ |
Material of main parts
| name of part | material of parts |
| body, bottom cap | CF8 |
| bonnet | casting Al alloy/CF8 |
| valve rod | 2Cr13 |
| valve seat | 2Cr13 |
| steelball | 2Cr13 |
| corrugated pipe | 1Cr18Ni9Ti |
| handwheel | heat-resisting plastic |
| main valve spring | 50CrVA |
| adjust spring | 60Si2Mn |
Connecting dimensions
| diameter | L | H1 | H2 | G |
| DN15 | 85 | 140 | 52 | 1/2〞 |
| DN20 | 95 | 143 | 55 | 3/4〞 |
| DN25 | 105 | 146 | 58 | 1〞 |
