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Fuji VV5 vacuum relief valve, 1.5 inch NPT female inlet, 6.25 inch length

Fuji

Fuji VV5 Vacuum Relief Trap 1.5 in NPT 60 in wc 6.25 in

SKU CH-RA1W-PFHEN MPN VV5

Vacuum relief trap with 1.5 in NPT female inlet, preset at 60 in wc and 6.25 in overall length

  • TypeDrain Components
  • Preset vacuum limit of 60 in wc protects blower from excess vacuum
  • 5 in NPT female inlet fits standard piping without adapters
  • 25 in overall length allows installation in tight equipment spaces
  • Compatible with VFC500A-7W and VFZ501A-7W blower models for direct replacement
  • Matches Grainger part numbers 4Z753 and 53WC09 for easy cross-reference

Vacuum Relief Function

The Fuji VV5 is a vacuum relief valve designed to protect blower systems from excessive vacuum pressure. It activates at a preset limit of 60 in wc to maintain safe operating conditions. The unit features a 1.5 in NPT female inlet for direct pipeline installation. Its overall length measures 6.25 in.

Suitable Applications

This valve suits maintenance teams replacing compatible components on Fuji VFC500A-7W, VFC508P-2T, VFZ501A-5W, or VFZ501A-7W blowers. It also matches Grainger part numbers 4Z753, 53WC09, 53WC10, and 5Z650. Buyers needing a different pressure setting or connection type should look at other models. Systems requiring pressure relief rather than vacuum relief need a separate device.

Preset Vacuum Limit

The factory-set activation point is 60 in wc, which determines when the valve opens to relieve vacuum. This single figure decides whether the part matches the system design criteria. Verify the required relief pressure before ordering.

Highlights

  • Preset vacuum limit of 60 in wc protects blower from excess vacuum
  • 5 in NPT female inlet fits standard piping without adapters
  • 25 in overall length allows installation in tight equipment spaces
  • Compatible with VFC500A-7W and VFZ501A-7W blower models for direct replacement
  • Matches Grainger part numbers 4Z753 and 53WC09 for easy cross-reference

Specifications

TypeDrain Components
BrandFuji
ModelVV5

Questions about this item

How do I install the 1.5 in NPT female inlet on my piping?

Thread the valve onto the male NPT pipe using PTFE tape or pipe sealant on the threads; the common mistake is over-tightening past hand-tight plus one turn, which can crack the body or distort the 6.25 in overall length alignment.

What maintenance will the vacuum relief mechanism need over time?

Inspect the valve seat and spring annually for debris or corrosion; clean or replace the internal components if the valve no longer opens at the 60 in wc preset limit.

At what vacuum level does the relief valve activate during continuous operation?

The valve is factory-set to open at 60 in wc vacuum; sustained vacuum above this level will cause the valve to cycle continuously.

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