Description
Overview:
This brass non-return valve is a compact in-line check designed to stop backflow and keep liquids moving in one direction only. Made from solid brass for long service life, it suits domestic, commercial, and light industrial plumbing where a dependable one-way flow is needed, such as water supply lines, boosting sets, and pump outlets. The valve has 3/4 inch (approx. 19 mm) female-to-female ends for easy connection into standard pipework and accessories. Its internal mechanism allows forward flow and automatically closes against reverse flow, helping to protect pumps, meters, and downstream components. Manufacturer Part Number (MPN): 850 049. It is a practical choice for building services, garden systems, and site utilities where reliable, low-maintenance flow control is required.
Key Features:
- Durable brass body for corrosion resistance and long service life
- 3/4 inch (approx. 19 mm) female-to-female connections for straightforward in-line fitting
- Prevents backflow to protect pumps, appliances, and pipework
- Helps maintain system pressure and water quality by avoiding reverse circulation
- Smooth internal flow path to minimise pressure loss in the correct direction
- Compact, inline form factor fits into tight spaces and retrofit installations
- Simple to install with basic plumbing tools; no power or adjustment needed
- Suitable for hot and cold water systems within typical building and site services
Typical Applications:
Backflow prevention on water supply branches, pump discharge lines, heating and cooling loops, irrigation feeds, rainwater harvesting outlets, and general plumbing circuits in homes, workshops, gardens, and construction sites. Often used after a pump or booster to prevent reverse siphoning and to keep the system primed.
Also known as:
Check valve, one-way valve, backflow preventer, anti-return valve, non-return check, NRV. These terms refer to the same function of allowing flow in one direction while blocking reverse flow.
Product Specifications
| L&S Part No. | 850 049 |
|---|---|
| Unit of Sale | 1 |
| Size | 3/4" Female / 3/4" Female Fittings |
