Vacuum Check Valves Contact Us

  • Vacuum Check Valves
Check valves for vacuum systems hold vacuum downstream whenever the vacuum source is removed or lost. Internally, a normally closed valve allows vacuum flow in the pump direction but seals off when vacuum flow ceases. Vacuum check valves can be used for energy saver circuits using a vacuum storage tank to accumulate and store vacuum for high-volume, short duration flow rate requirements.

EDCO USA manufactures and stocks all vacuum check valve and accessory products in the United States. We also provide in-house testing on site in our Fenton, Missouri facility. Our range of Vacuum Check Valves allows you to select the product that best suits your project’s specifications.

Contact us for application questions including Vacuum Pump or Vacuum Check Valve selection or to discuss your project’s specific requirements.  We will work hard to make EDCO your primary resource for industrial bulk Check Valves for Vacuum Systems.

Vacuum Check Valve Advantages

Vacuum check valves prevent the reversal of ambient air into a vacuum automation system. Vacuum check valve advantages include:
  • Air-tight, leak-proof design
  • Anodized aluminum body
  • Optimal flow design
  • Low cracking pressure

Vacuum Check Valve Options

EDCO USA manufactures and stocks two sizes of vacuum check valves. Both vacuum check valve options include parts for admitting compressed air for workpiece release. We offer the following options:


Our VC12 vacuum check valves provide G 1/2 NPSF male adaptive requirements and are used with 75 mm diameter and larger vacuum cups. VC12 specifications include:
  • Vacuum Source: G 1/2 NPSF
  • Vacuum Connection: G 1/2 NPSF
  • Release Port Connection: G 1/8 NPSF
  • Weight: lb (g): 0.19 (86.0)


EDCO USA's VC18 vacuum check valves include G 1/8 NPSF female connections and are used with 65 mm diameter and smaller vacuum cups. VC18 specifications include:
  • Vacuum Source: G 1/8 NPSF
  • Vacuum Connection: G 1/8 NPSF
  • Release Port Connection: G 1/8 NPSF
  • Weight: lb (g): 0.15 (68.0)

Release Check Valves

When a vacuum check valve is used in a system, some provision must be made to dissipate the trapped vacuum to release the workpiece. This is where you’d want to employ the use of one of our release check valves. Release Check Valves are used with a single vacuum cup so that a non-porous, high-value workpiece would not be immediately dropped if the system vacuum source is lost. 

Vacuum Check Valve Volume Chamber

The vacuum trapped by the vacuum check valve will eventually leak down. The rate at which vacuum diminishes will depend on the condition of all the components in the vacuum system. To increase the time delay interval, a volume chamber can be added to the auxiliary port. If the volume chamber is equal to twice the cup internal volume, the time delay interval will be approximately tripled.
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Contact EDCO USA for Technical Assistance

EDCO USA personnel provides help with products, specifications, component selection, and system design.

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