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
Item 21336
402.05/Each
Save 5% when you buy 2+
Save 10% when you buy 4+
Save 15% when you buy 12+
P-480
402.05/Each
3"  Socket PVC Knife Gate Valve with Air Actuator
Item 21337
783.29/Each
Save 5% when you buy 2+
Save 10% when you buy 4+
Save 15% when you buy 12+
P-480
783.29/Each
4"  Socket PVC Knife Gate Valve with Air Actuator
Item 21338
783.29/Each
Save 5% when you buy 2+
Save 10% when you buy 4+
Save 15% when you buy 12+
P-480
783.29/Each