Pressure Washer Adapter and M22 Pressure Washer Fitting

M22 comes in two sizes that look identical in the hand and will not seal on one another: 14 mm and 15 mm. Almost every pressure washer hose that turns up and refuses to go on is this mismatch. Both pieces here exist to bridge it.

Which piece does which conversion

Two items are supplied and they are not interchangeable. The M22 pressure washer fitting converts a 3/8 inch NPT male thread to an M22 14 mm male fitting, described as connecting a 3/8" NPT pressure washer gun to an M22 14 mm pressure washer hose. The pressure washer adapter converts M22 15 mm female to M22 14 mm male. Neither piece converts a 15 mm male or accepts a 14 mm female.

Brass, and the figure behind the pressure claim

The M22 male adapter is brass, which the supplier credits for its resistance to corrosion. On pressure, its wording is that the maximum working pressure of the M22 adapter is up to 4500 PSI. That figure applies to that one item, in the supplier's unit, reproduced without conversion. No test or standard is named behind it.

Machines the supplier names

The M22 14 mm fitting is stated to be compatible with Generac, Simpson, Briggs Stratton, Craftsman, Karcher and Ryobi pressure washers, and the M22 15 mm fitting with Sun Joe, Campbell, MI-T-M, AR Blue, Stanley, Cleanforce, Simoniz and Excell power washers. Those lists are the supplier's. A brand absent from them is not covered, and models change fittings, so measure.

Specifications

• Contents: one M22 pressure washer fitting, one pressure washer adapter
• Fitting conversion: 3/8" NPT male to M22 14 mm male
• Adapter conversion: M22 15 mm female to M22 14 mm male
• Material: brass, stated for the M22 male adapter
• Maximum working pressure: up to 4500 PSI, quoted for the M22 adapter
• Seals, spanner size, temperature limit: no such details appear anywhere in the source

Check your threads first

• Measure the M22 spigot across its diameter. 14 mm and 15 mm are the whole decision and cannot be forced together.
• The 3/8 inch NPT thread is called metric in the supplier's text. NPT is an imperial tapered thread, so treat that as an error rather than a specification.
• Test at low pressure, gun pointed somewhere safe, before working at full flow.

Returns, Refunds, and Replacements

Products that are received faulty, damaged, or not as described are eligible for a return, refund, or replacement in accordance with the Australian Consumer Law (ACL). We are committed to ensuring all products meet the standards of quality and reliability expected by our customers. However, please note that we do not accept returns or provide refunds for change of mind. We encourage you to carefully consider your purchase to ensure it meets your needs and expectations.

Delivery Timeframe

Please note that we cannot guarantee the exact date of arrival, and the delivery timeframes (excluding weekends and public holidays) are as follows:

For customers in Victoria, approximately 7-10 working days; For customers in NSW, SA, ACT, and QLD, approximately 9-12 working days; For customers in WA, NT, and TAS, approximately 9-12 working days.