Size Range : 1/2″ to 4″ Screwed

Silent Features

  • Valve Body is made by Stainless Steel #316, suitable for fluid, air and oil.
  • Larger diaphragm is more sensitive to pressure.
  • Pressure Adjusting Range : 0.2 ~ 1.5 Kgf/cm2
  • Applied Temperature  : -15 ~ 80 °C
  • Valve Body Testing Pressure   : 16 Kgf/cm2
  • Maximum Applied Pressure   : 10 Kgf/cm2
Dimensions : (All Dimensions are in mm)
Valve Model Valve Size L H CV Weight Approx.
MM Inch
4M-LOS – 15 15 1/2″ 70.5 128.5 2.5 1.400
4M-LOS – 20 20 3/4″ 85.5 137.45 9.0 1.600
4M-LOS – 25 25 1″ 90 135.4 11.0 1.650
4M-LOS – 40 40 1.1/2″ 115 134.5 21.0 3.550
4M-LOS – 50 50 2″ 120 165.9 25.0 3.800
4M-LOS – 65 65 2.1/2″ 148 170.2 75.0 3.928
4M-LOS – 80 80 3″ 177 —- 80.0 —-
4M-LOS – 100 100 4″ 190 —- 120.0 —-
No. Description Material Qty.
01 Body CF8 / CF8M 01
02 Bonnet CF8 / CF8M 01
03 Plug CF8 / CF8M 01
04 Plug V – Seal NBR / Viton 01
05 Sealing Spacer Seat NBR / Viton / PTFE 01
06 Piston S. S. 304 / 316 01
07 Bonnet Cover CF8 / CF8M 01
08 Diaphragm NBR / Viton / PTFE 01
09 End Cover CF8 / CF8M 01
10 Spring Spring Steel 01
11 Spring Guide Brass / S. S. 410 01
12 Diaphragm Washer S. S. 304 / 316 01
13 Adjusting Piston Bolt S. S. 304 / 316 01
14 End Cover O – Ring NBR / Viton 01
15 Cover for O – Ring NBR / Viton 01
16 Bonnet Fitting Bolt Bonnet Fitting Washer S. S. 304 / 316 06
17 Adjusting Bolt S. S. 304 / 316 01
18 Adjusting Nut S. S. 304 / 316 01