Skip to product information
1 of 1

Gast AA840A - Vac Rel Valve 3/8 Npt Sp Aa840 A

Gast AA840A - Vac Rel Valve 3/8 Npt Sp Aa840 A

Brand: Gast SKU: AA840A
Regular price $61.90 USD
Regular price Sale price $61.90 USD
Sale Out of Stock - Call to Order
In Stock — Ships TODAY if ordered before 2:00 PM EST
Quantity
OEM manufacturer warranty Genuine factory-sourced

Ships factory-new in original packaging.

Not sure if a compatible flange, seal kit, or accessory exists for this item? Ask our team — we're happy to help you find the right part.

Official TIPS Contract Awarded Vendor Badge

TIPS Contract Vendor

Officially awarded purchasing cooperative vendor.

✓

Why Buy From Us

Every quote personally reviewed. Direct sourcing from top manufacturers.

View full details

The GAST - AA840A is a vacuum relief valve that provides vacuum relief at a preset vacuum level to limit negative pressure in connected systems. It operates by opening to allow ambient air in when internal pressure falls below a preset vacuum level, then reseals as pressure equalizes. The valve is compatible with Gast brand equipment and replaces listed Gast part numbers.

Key Features:

  • - Thread size: 3/8" NPT for standard pneumatic connections.
  • - Compatible with Gast brand equipment.
  • - Fits and replaces multiple Gast manufacturer part numbers including 0523-101Q-G588NDX, 1423-101Q-G625, AT05-101-G215DX, among others.
  • - Opens to admit air at low pressure and reseals at equalized pressure.
🏢

Corporate Procurement & PO Processing

Formal Purchase Orders (POs) and tax-exempt ordering are accepted for commercial contractors and institutional facilities.

Apply for Trade Account & Terms →

📋 Procurement & Shipping Notice

  • LTL Freight Dispatch: Heavy commercial units ship directly via insured LTL carrier with delivery coordination included.
  • Project Timelines & Submittals: Need guaranteed delivery dates, formal submittals, or tax-exempt processing?

👉 Request a Commercial Quote or contact our procurement team for direct freight scheduling.