








Straight Anti-Blowback Adapter 5/16" to 1/4" Male
MPN: HC-ABB516
22-0096
Short Description
FREE SHIPPING for orders over $50 (Else $9.50).
Product Description
The HCPRO Straight Anti-Blowback Adapter (5/16" to 1/4") is a professional-grade HVAC tool designed for technicians working with mini split AC systems, VRF units, ductless air conditioners, and central HVAC systems. Featuring a 5/16" SAE male flare, 1/4" flare outlet, and 1/2"-20 female thread, this anti-blowback fitting helps ensure leak-free, reliable refrigerant line connections in high-pressure systems.
Engineered to minimize refrigerant loss during hose disconnection, this R410A adapter protects critical components like compressors and expansion valves from contamination and moisture. It’s ideal for charging, vacuum, and recovery applications using R410A, R32, R134a, or R22. The straight-line design provides a compact and durable solution that fits easily into your HVAC tool kit or AC service set.
Whether you're performing maintenance on a ductless mini split, VRF multi-zone system, or commercial air conditioning unit, this adapter delivers safe, efficient, and precise performance. Trusted by HVAC technicians, installers, and refrigeration pros, it's compatible with most refrigerant hoses, manifold gauge sets, and vacuum pumps.
Key Features:
- Straight Anti-Blowback Adapter – Prevents refrigerant discharge during disconnection for safe AC service.
- 5/16" SAE to 1/4" Male Flare – Compatible with mini split tools, HVAC hoses, and gauge manifolds.
- Perfect for R410A, R32, R134a – Works with residential, commercial, and automotive AC refrigerants.
- VRF System Compatible – Trusted solution for multi-zone inverter systems and tight refrigerant lines.
- Brass Body with 1/2"-20 Female Thread – Delivers corrosion resistance and high-pressure sealing.
- Essential for HVAC Technicians – Fits your charging hose, recovery machine, or vacuum pump system.
Product Highlights
Technical Specifications
Shipping
Fast Shipping on In-Stock Products - Receive Your Order in 1-2 Business Days.
FREE U.S. shipping on orders over $50
Secure and Fast Shop Process
100% Money Back Guarantee
Complimentary shipping & returns
For additional information please see our Shipping Policy.
Couldn't load pickup availability
Pickup available at 13473 NW 19th LN
Usually ready in 2 hoursPairs well with

Straight Anti-Blowback Adapter 5/16" to 1/4" Male
If you have any questions, you are always welcome to contact us. We'll get back to you as soon as possible, within 24 hours on weekdays.
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Shipping Information
- FREE SHIPPING for full pallet orders going to zoned industrial addresses within the freight delivery network that have a 48-inch loading dock and access for 53-foot trailers. If you are not sure if your location qualifies for free shipping, please CONTACT US HERE.
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Customer Support
Talk to our support team for personalized assistance.
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FAQ’s
Welcome to our FAQ, we are so happy to have you here and as a client.
We have tried to answer the most common questions. -
Contact Us
We'd love to hear from you. Our team is here to help.
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 $50 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.