Check Valves for Vacuum

These check valves are designed to prevent backflow in flexible tubing systems used in vacuum applications. Featuring a simple, compact design, they operate in any position and provide reliable one-way flow control in low-pressure environments. Constructed with polyethylene bodies and diaphragm-style disks, these valves are ideal for air and gas applications where maintaining directional flow is critical.

  • Polyethylene body
  • Polyethylene disk (64001) or neoprene disk (64004)
  • Prevents backflow in vacuum tubing systems
  • Operates in any position for flexible installation
  • Best performance at 10"–28" Hg vacuum range
  • Compact design for easy inline installation
  • Ideal for air & gas applications (not for liquids)
Item # Description Catalog Pg. Price Add to Cart
5/16" to 1/4" Tapered Tube ID x 5/16" to 1/4" Tapered Tube ID Natural Polyethylene Vacuum Check Valve - 3/4" Connection L
Item 64001
3.6/Each
Save 5% when you buy 36+
Save 10% when you buy 72+
Save 15% when you buy 216+
P-275
3.6/Each
1/2" to 3/8" Tapered Tube ID x 1/2" to 3/8" Tapered Tube ID Natural Polyethylene Vacuum Check Valve - 1-1/16" Connection L
Item 64004
14.87/Each
Save 5% when you buy 36+
Save 10% when you buy 72+
Save 15% when you buy 216+
P-275
14.87/Each

Note: Product testing for individual applications is recommended before use. U.S. Plastic Corp. cannot be held liable for individual application failures.

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