VENN High-Sensitivity Steam Pressure Reducing Valve
May 22, 2017
This series reducing valve is pilot piston type reducing valve, mainly composed of main valve and pilot valve. The main valve consists of valve seat, main valve disc, piston, cylinder sleeve, and spring. The piston valve consists of valve seat, valve flap, membrane, spring and adjusting spring. Set the outlet pressure through adjusting spring, sense the change of pressure of outlet with membrane, adjust the flow area of throttling part of main valve through open and close of pilot valve and drive the piston, to realize the function of reducing and regulating valve. The product made following improvement on the basis of normal pressure reducing valve, enlarge the piston area, change the throttle structure, change the sealing manner, improve the pilot structure and manner of adjusting spring, thus to improve the performance of the product.
1. Improve the sensing effect to outlet pressure change, increase the sensitivity, greatly reduce the pressure deviation caused by upper stream pressure change and flow change.
2. Improve the distribution of flow line, reduce the noise.
3. Improve the structure of sealing surface; prolong the service life of sealing surface.
The product is mainly applied on steam piping, especially the steam piping with big change of pressure and flow.
Main Technical Parameters&Indexes Of Performance.
Pressure Rating: 1.0- 1.6Mpa
Material: Steel WCB
Standard flanges: DIN, ANSI, JIS
Nominal pressure PN1.0Mpa PN1.6Mpa
Tested pressure of shell 1.5Mpa 2.4Mpa
Sealing test pressure 1.0Mpa 1.6Mpa
Maximum upstream pressure 1.0Mpa 1.6Mpa
Pressure range of outlet 0.04-0.6Mpa 0.04-1.0Mpa
Minimum differential pressure 0.05Mpa 0.07Mpa
Operating temperature 425
*the shell test does not include membrane and top cover.
Material Of Main Component.
Name of component Material of component
Valve body, valve cover, seat cover WCB
Valve seat, valve flap 2Cr13
Cylinder sleeve, Piston Ampco
Piston ring polyphenyl
Pilot valve seat, pilot valve rod 2Cr13
Spring of main valve 50CrVA
Main spring of pilot valve 50CrVA
Adjusting spring 60Si2Mn
Connecting Dimensions. ?
DN external dimension
L H H1
15 140 160 65
20 140 160 65
25 150 168 68
32 180 185 75
40 180 185 78
50 200 193 88
65 230 208 98
80 260 228 117
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