Fushiman PMD31L Pressure Reducing Valves

Manufacturer:  Fushiman Co.,LTD.
Model: PMD31L

Model Nominal Diameter Primary Pressure Secondary Side Setting Range Maximum Operating Temperature Body Material Connection
PMD31L 15〜150 MAX. 0.4MPa 0.01~0.05MPa 80℃ FC,SCPH,SCS Flange
  • It is stable in operation due to the direct-acting pressure regulator.
  • It is for low pressure use with the PMD31 type pressure regulator.
  • Due to the use of a balanced pressure method, the secondary side pressure is hardly affected by changes in the primary side pressure.
  • Because synthetic rubber is used in the body, the stop during valve closure is excellent.

Specifications and Materials

Fluid Pressure MPa Tempera-ture °C Main Material Parts Pipe Connec-tion
Primary Side Secon-dary Side Setting Range Valve Box Diaphragm Retainer Liner Valve Body Diaphragm Valve Seat Valve Stem Spring Protec-tion Tube
Air and Non-corrosive Gases 0.02 – 0.4 0.01 – 0.05 0 – 80 Cast Iron Bronze or Stainless Steel Synthetic Rubber Bronze or Stainless Steel Stainless Steel Cast Iron Flange JIS10K Flat Seat
Cast Steel
Stainless Steel Cast Steel Stainless Steel Stainless Steel

Remarks:

  1. ASME Class 150 is also available.
  2. If the valve box is made of cast steel or stainless steel, the connection part can be manufactured without the use of rubber and with the use of bronze or alloy. Additionally, the specifications and performance of the connection part when rubber is not used will be examined accordingly.

Performance

Minimum Set Differential Pressure 0.01 MPa
Offset Approximately 6 kPa or less
Closing Pressure Rise Approximately 3–7 kPa (1)
Minimum Adjustable Flow Rate (Air) (2) Approximately 3–8 m³/h (Standard conditions) (1)
Seat Leakage 0.01% or less of the rated flow rate

Notes:

  1. The greater the difference between the primary side pressure and the set pressure, the larger it becomes.
  2. For gases other than air, divide by √G (where G is the specific gravity of the gas, with air as 1).

CV Value

Nominal Diameter 15 20 25 32 40 50 65 80 100 125 150
Cv 1.8 2.6 3.9 6.3 8.3 13 21 29 50 76 109

Structure and Dimensions

Dimensions and Mass

(mm, kg)

Nominal Diameter Valve Body: Cast Iron Valve Body: Cast Steel or Stainless Steel Cast Steel
L H1 H2 E Mass L H1 H2 E Mass
15 196 70 364 155 12 206 70 364 155 16
20-25 200 70 364 155 13 210 70 364 155 17
32 175 70 364 155 14 220 70 364 155 18
40 190 80 374 155 16 220 80 374 155 21
50 195 80 374 155 17 225 80 374 155 22
65 230 110 488 210 34 280 109 488 210 38
80 250 110 488 210 35 280 109 488 210 39
100 290 127 537 250 58 330 121 542 250 65
125 365 174 690 320 98 380 174 690 320 114
150 415 207 902 380 150 470 207 902 380 162

Disassembly and Maintenance Space Required

Nominal Diameter 15-32 40-50 65-80 100 125 150
Above Pipe Center 520 530 650 720 1010 1330
Below Pipe Center 190 200 340 400 450 550

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