Praher Knife Gate Valves with Air Actuators

These actuated valves for industrial, agricultural, and commercial markets are ideal for quick shut-off in low pressure or vacuum lines. With full, unrestricted flow, these valves are quick opening/closing and have a simple and trouble-free operation.

  • PVC construction
  • TPE lip-type seals & EPDM O-rings
  • Stainless steel (304/A4) shaft & hardware
  • Custom made aluminum/stainless steel double-acting air cylinder with 1/8" FPT ports
  • Safety clip prevents unintentional closing
  • Magnetic piston standard on all cylinders
  • 3" & 4" have full serviceable double O-ring shaft seals
  • Vacuum: 20" Hg when closed & 7" Hg when open
  • 60 psi minimum air pressure required to operate the cylinder
  • Maximum pressure: 50 psi @ 70°F, 3.5 bar @ 20°C
Stock Description Catalog Pg. Price
2" Socket PVC Knife Gate Valve with Air Actuator
21336
$283.77/Each
Save 5%2+$269.58/Each
Save 10%4+$255.39/Each
Save 15%12+$241.20/Each
P-471
$283.77/Each
3"  Socket PVC Knife Gate Valve with Air Actuator
21337
$605.49/Each
Save 5%2+$575.21/Each
Save 10%4+$544.94/Each
Save 15%12+$514.66/Each
P-471
$605.49/Each
4"  Socket PVC Knife Gate Valve with Air Actuator
21338
$605.49/Each
Save 5%2+$575.21/Each
Save 10%4+$544.94/Each
Save 15%12+$514.66/Each
P-471
$605.49/Each

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