Nominal Model:DN50-DN600
Nominal Pressure:PN16 N25
Applicable Temperature:0℃-80℃
Applicable Medium:Water
Nominal Pressure:1.0Mpa-2.5Mpa
Design Standard:JB/T 10674-2006
Test Standard:GB/T13927-2008
When the pressure difference between the inlet and oullet of the main valve changes,the pressure difference at both ends of the pilot vale changes,and the opening of the pilot valve changes.When the pressure difference is large,the opening of the pilot valve is large,the water discharge in the control room increases,the pressure in the control room of the main valve decreases,the opening of the main valve increases,and the pressure difference between the inlet and oullet of the main valve becomes smaler.On the contrary,the pressure difference between the inlet and outlet of the main valve becomes smaller,the pilot valve opening becomes smaler,the pressure of the main valve control room rises,and the main valve opening decreases and the main valve pressure difference increases.This negative feedback effect makes the pressure difference between the inlet and outlet of the main valve stable at the set value.Set the needle valve opening and pilot valve spring pressure to set thepressure difference between the main valve inlet and outlet.
Nominal Model:DN50-DN600
Nominal Pressure:PN16 N25
Applicable Temperature:0℃-80℃
Applicable Medium:Water
Nominal Pressure:1.0Mpa-2.5Mpa
Design Standard:JB/T 10674-2006
Test Standard:GB/T13927-2008
| 1.Body | GGG50 | 11.Spring | 304 |
| 2.Stem | 2Cr13 | 12.Diaphragm | EPDM |
| 3.Seat | CF8 | 13.Bonnet | GGG50 |
| 4.Seal ring gland | Q235 | 14.Hex nut | 304 |
| 5.0-Ring | NBR | 15.Stud balt | 304 |
| 6.O-Ring | NBR | 16.SCREW PLUG | 304 |
| 7.Seal Ring | NBR | 17.Ball valve | 304 |
| 8.Disc | GGG50 | 18.Solenoid valve | 304 |
| 9.Diaphragm gland | GGG50 | 19.Needle valve | 304 |
| 10.Hex nut | 304 |
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Velya Valve is located in oubei , zhejiang the valve Town . The company is committed to the production of HVAC Valves，water system valves，and energy saving management of heating and cooling systems.
