API Certified Permanently Attached Petroleum 520-H Female Coupling - Brass

API Certified Permanently Attached Petroleum 520-H Female Coupling - Brass

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API Certified Permanently Attached Petroleum 520-H Female Coupling - Brass H5221-A-BU API Certified Permanently Attached Petroleum 520-H Female Coupling - Brass 1-1/4" / H5221-A-BU / Brass
  • Hose Size : 1-1/4"
  • Material : Brass
  • Size : 1-1/4"
  • Threads : NPSH
  • Pkg/Box Qty : 1
$ 28.65

API Certified Permanently Attached Petroleum 520-H Female Coupling - Brass

Recommended for discharge and suction service. Commonly used in the transfer of fuel to homes, airplanes, ships, etc.

Stems are machined from bar stock or solid brass forgings

Female has octagonal facets for tightening with a wrench. The stem is expanded to nominal id of hose for a rigid, uniform, full-flow area. Couplings are compact, light and streamlined to eliminate catching on curbs and shrubs. Couplings are pre-lubricated for assembly.

The working pressure of the 520-h fitting varies with the size of the fitting, the size and construction of the hose and the media being conveyed. Coupling procedures, ferrule recommendations and api test data are available upon request, please contact a hose in hose representative. Hand and electrically operated installation equipment is available. Consult dixon for pricing and availability.

Safety notes
Do not interchange with other manufacturer's fittings. Designed for internal expansion only. Dixon holedall stems and ferrules are specifically designed to be used together as a coupling system. Do not use a wrench or vice on ferrule. Holedall couplings, regardless of coupling style, are never to be used for steam service at any pressure. Holedall fittings are not to be used with cable reinforced high-pressure hose, 4 or 6 braid wire hydraulic hose or any other service not listed in the recommendations. Consult dixon for recommendations on usage. Strict adherence to ferrule od range (internally expanded) for each hose end to be assembled is essential for satisfactory performance. Hose service working pressure (including surges and spikes) is never to exceed the maximum recommended working pressure for the fitting. The assembly's (hose + coupling) maximum working pressure is the lesser of the hose rated working pressure or the coupling rated working pressure. Media being transported through the hose should be compatible with the stem material. Compatibility of ferrule material with the environment in which it will be used is recommended. Consult the compatibility chart or the dixon factory for material compatibility. For applications other than the ones list, please consult a hose in hose representative. Warning: this product contains a chemical known to the state of california to cause birth defects or other reproductive harm. Do not use in connection with drinking water. Wash hands after handling.

Api certified, tested and compliant with api 1629 6th edition

May also be used with internally expanding permanent couplings- scovill style. Designed for internal expansion only.

Returns Policy

You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).

You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).

If you need to return an item, simply login to your account, view the order using the 'Complete Orders' link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.


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When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.

Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.

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