304 Stainless Steel One-Way Check Valve – 29×22mm

Keep your plumbing system flowing in the right direction with this heavy-duty 304 stainless steel check valve. Designed for reliable one-way (non-return) flow control, this compact 29×22mm valve prevents backflow and protects your water supply lines, water heaters, water towers, toilets, and general plumbing installations. Built to last, it's an essential fitting for any home or commercial plumbing setup.

Key Features

Premium 304 Stainless Steel – Corrosion-resistant construction for long-lasting durability in wet environments
One-Way Flow Control – Allows water to flow in one direction only (female thread inlet → male thread outlet), effectively preventing backflow and contamination
Compact Size – 29×22mm footprint fits neatly into tight plumbing spaces
Wide Application – Ideal for water towers, water heaters, toilets, irrigation lines, and general water pipe installations
Easy Installation – Threaded connections for quick and secure fitting into existing pipework
Brand New – Supplied in original packaging, ready to install

Specifications

Material	304 Stainless Steel
Size	29 × 22mm
Flow Direction	Female thread (inlet) → Male thread (outlet)
Valve Type	One-Way Non-Return Check Valve
Package Contents	1 × Check Valve

Installation Notes

⚠️ Important: Please confirm the correct size and flow direction before installation. Flow is unidirectional — from female thread to male thread. Installing the valve in reverse will restrict water flow. Please allow 1–5mm measurement tolerance due to manual sizing.

Note: Monitor color calibration may cause slight variation between product photos and the actual item. Please consider the physical product as the color standard.

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Authoritative Plumbing Resource

For guidance on safe plumbing practices and backflow prevention in residential water systems, visit the U.S. Environmental Protection Agency – Drinking Water Basics.

Frequently Asked Questions

Q: What is a check valve and what does this stainless steel one-way valve do?

A: A check valve (also called a non-return valve) allows water to flow in only one direction, preventing backflow that could contaminate clean water supplies or damage appliances. This 304 stainless steel check valve directs flow from the female thread inlet to the male thread outlet only, making it ideal for water heaters, toilets, water towers, and general plumbing lines.

Q: What pipe size does this check valve fit?

A: This valve measures 29×22mm overall. Please verify your pipe thread dimensions against these measurements before purchasing to ensure a proper fit. A 1–5mm manufacturing tolerance applies.

Q: Is this check valve suitable for outdoor or corrosive environments?

A: Yes. The valve is made from 304 stainless steel, which is highly resistant to rust and corrosion, making it suitable for both indoor and outdoor water plumbing applications where moisture is present.

Q: How do I install this one-way non-return valve correctly?

A: Thread the female end (inlet) to your water supply line and the male end (outlet) toward your appliance or destination pipe. Always confirm the flow direction arrow (if present) matches your intended water flow before tightening. Installing in reverse will block water flow.

Made with care

Great value

Elegant design

Quality materials

This product is crafted with quality materials to ensure durability and performance. Designed with your convenience in mind, it seamlessly fits into your everyday life.

We strive to process and ship all orders in a timely manner, working diligently to ensure that your items are on their way to you as soon as possible.

We are committed to ensuring a positive shopping experience for all our customers. If for any reason you wish to return an item, we invite you to reach out to our team for assistance, and we will evaluate every return request with care and consideration.