90° Anti-Blowback Swivel Adapter 5/16" to 1/4"
90° Anti-Blowback Swivel Adapter 5/16" to 1/4"
90° Anti-Blowback Swivel Adapter 5/16" to 1/4"
90° Anti-Blowback Swivel Adapter 5/16" to 1/4"
90° Anti-Blowback Swivel Adapter 5/16" to 1/4"
90° Anti-Blowback Swivel Adapter 5/16" to 1/4"
90° Anti-Blowback Swivel Adapter 5/16" to 1/4"
90° Anti-Blowback Swivel Adapter 5/16" to 1/4"

HCPRO

90° Anti-Blowback Swivel Adapter 5/16" to 1/4"

MPN: HCABB51690

22-0097

Product Summary

90° anti-blowback adapter 5/16" to 1/4" for mini split and VRF HVAC systems. Prevents refrigerant loss and ensures safe, leak-free connections.

Sale price$14.85 USDRegular price $16.95 USD
Shipping calculated at checkout.

FREE SHIPPING for orders over $99 (Else $9.50).

Adapter Quantity
Adapter Quantity: Each
In stock, ready to ship
Product Description

The HCPRO HCABB51690 90° Anti-Blowback Swivel Adapter is an essential HVAC tool for technicians working on mini split systems, VRF systems, and refrigeration units using R410A, R134a, and other high-pressure refrigerants. Featuring a 5/16" SAE male flare, 1/4" male outlet, and 1/2"-20 female thread, this refrigerant hose adapter is built for leak-free, secure, and efficient service connections.

Its 90-degree elbow swivel design improves hose routing in tight spaces, making it ideal for ductless HVAC, VRF installations, and multi-zone air conditioning units. The anti-blowback valve minimizes refrigerant loss, protects compressors, and prevents contamination. Perfect for recovery systems, charging hoses, vacuum pumps, and refrigerant gauges, this brass adapter provides professional-grade durability.

Whether you're servicing inverter mini split AC units, heat pumps, or multi-head VRF HVAC systems, the HCABB51690 ensures reliable, leak-proof performance every time. Compatible with all major refrigerants and ideal for use with HVAC tool kits, service manifolds, and vacuum pump hose sets.

Key Features:

  • 90° Anti-Blowback Design – Perfect for tight installs in VRF systems, mini splits, and multi-zone AC setups.
  • 5/16" SAE to 1/4" Flare Adapter – Works with standard refrigerant hoses, charging hoses, and vacuum hoses.
  • Minimizes Refrigerant Loss – Prevents blowback during service, ideal for R410A, R134a, R22, and R32.
  • Compatible with HVAC Tools – Fits most manifold gauges, AC hose kits, and service couplers.
  • Brass Swivel Construction – Built for long-lasting use in commercial, residential, and automotive AC.
  • Protects VRF and Mini Split Systems – Prevents damage to compressors, expansion valves, and line sets.
Product Highlights

Why HVAC Techs Use Anti-Blowback Adapters on VRF Systems

1. Prevents Refrigerant Loss During Disconnection

  • VRF systems operate with high system pressure and often use expensive refrigerants (typically R410A).
  • An anti-blowback valve prevents a sudden discharge of refrigerant when disconnecting service hoses, preserving system charge and protecting technicians.

2. Minimizes System Contamination

  • These adapters seal the service line quickly upon disconnection, reducing air or moisture ingress, which is critical for VRF systems due to their sensitivity and long refrigerant piping runs.

3. Protects Compressor and Components

  • Blowback can allow contaminants or moisture into the lines, which can damage electronic expansion valves (EEVs) and inverter compressors commonly found in VRF systems.
  • This adapter helps maintain internal cleanliness.

4. Supports Safe & Precise Servicing

  • VRF systems are complex and often support multiple indoor units. Service mistakes (like losing charge) can cause system-wide issues.
  • These adapters ensure secure, clean, and pressure-controlled service when connecting gauges or recovery systems.
  • 5. Improves Access in Tight Installations
  • Many VRF systems are installed in tight mechanical rooms or rooftops, and the 90-degree design allows for better hose routing without kinking or stressing connections.

6. Required or Recommended by Manufacturers

  • recommend or require anti-blowback fittings to avoid warranty-voiding service mistakes.
Technical Specifications
  • Female End: 5/16″ Industrial Interchange (II) or 1/4″ NPT
  • Male End: 1/4″ NPT with 1/2″-20 UNF collar
Shipping

Fast Shipping on In-Stock Products - Receive Your Order in 1-2 Business Days.

FREE U.S. shipping on orders over $99

Secure and Fast Shop Process

100% Money Back Guarantee

Complimentary shipping & returns

For additional information please see our Shipping Policy.

Pickup available at 13473 NW 19th LN

Usually ready in 2 hours

Pairs well with
Free shipping and returns

Product details

Does HCPRO warranty the products?

Yes, we do. We guarantee that our products are free from defects and are fully compatible with the OEM specifications and applications listed on the product label and data sheet. Please see our detailed product warranty here.

Will HCPRO products keep my factory warranty?

Yes, they will. We guarantee that our products are fully compatible with the OEM specifications and applications listed on the product label and data sheet.

Under US law, the OEM cannot void the warranty for using an aftermarket product or require you to use their product to maintain factory warranty. This aspect of warranty law is covered by the Magnuson-Moss Warranty Act of 1975. If you have any issues with a service center or OEM dealership trying to force you to use their products, please contact us.

FAQs

Please read our FAQs page to find out more.

How do I get free shipping?

Parcel Packages: Free shipping on orders of $99 or more.

Palletized Shipments: Free shipping is available for qualifying palletized orders. Further information is available on our Shipping Policy Page.

How do I return an item?

We offer free returns for wrong or defective items within 30 days of purchase. Simply contact our support team to initiate a return if its not possible to do it through your account and order history page.

We will email you a free shipping label for UPS or Fedex once your return is approved.

How do I track my order?

Parcel Package Orders: The tracking information is available in your order history.

Palletized Orders: You will receive an email with a copy of the BOL. Please contact your account representative or message us for further information.

Tax Exempt Orders

Sales tax is automatically charged for orders within the state of Texas.

If your business qualifies for tax exemption, download and fill out tax exemption certificate here and email it to accounting@hcproproducts.com.

You will be contacted afterwards to set up an account.

What should I do for issues with Amazon fulfilled orders?

If you have any problems with an order that Amazon fulfilled, please contact them first. They are responsible for handling all refunds, replacements, or other issues. If Amazon does not resolve the issue, please message us and provide your Amazon order number.

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