Valves help safeguard infrastructure and public health. Today's valve technologies include features like essential pressure relief mechanisms that protect delicate cold-water lines to robust backwater valves preventing hazardous sewage backups. Modern innovations also include automatic break-check systems for emergency hydrant impacts and specialized torsional valves that optimize potable water mixing without external power. Built from durable materials like brass, ductile iron and engineered rubber, these dependable devices ensure system integrity and maintain steady pipeline performance.
A.Y. McDonald 6214 Pressure Relief Valve
A.Y. McDonald’s 6214 Pressure Relief Valve is engineered to protect cold water systems by relieving excess pressure and preventing damage to pipes, system components and pressure tanks. Designed for installation on cold water service lines, including well water pressure tank systems, the valve is constructed from durable no-lead brass and features a composition disc on a brass seat for reliable sealing and a long service life. Each valve is factory set at 30, 65, 75 or 100 PSI to ensure consistent performance with field adjustment not recommended to maintain accuracy and reliability. It is rated for a maximum operating temperature of 180 degrees F, making it suitable for a wide range of residential and commercial plumbing applications. It is available in multiple sizes to accommodate varying system needs. 800-292-2737; www.aymcdonald.com
Flomatic Valves Sewair‑Combo NXC
The Sewair‑Combo NXC from Flomatic Valves meets AWWA C512 and is a compact, full‑bore, single‑chamber wastewater combination air valve engineered to provide reliable air release and vacuum protection in demanding sewage applications. Designed for durability, it features a ductile iron body with a 316 stainless steel float and a convenient 1-inch cleanout port, ensuring long service life and simplified maintenance. It operates as a three‑function valve, efficiently releasing air during system filling, preventing vacuum conditions during draining and expelling entrapped air under pressure to maintain optimal pipeline performance. It offers a 2-inch size range, maximum operating pressure of 230 psi and maximum temperature of 140 degrees F, making it well suited for modern wastewater systems. 518-761-9797; www.flomatic.com
Mueller Jones J7000 Break Check Valve
The Jones J7000 Break Check Valve from Mueller can be easily fitted to any Jones wet barrel hydrant. If a vehicle strikes a hydrant, the valve slowly closes automatically to minimize water hammer and protect infrastructure and property damage. This automatic shut-off can reduce water loss by 90% or more. It emits a mist of water providing notification that an accident has occurred so crews can quickly get the hydrant back in service. The valve has ductile iron and stainless steel construction with e-coating for enhanced corrosion resistance and NSF 61 certified internal coating. Rated at 350 psig, it’s designed, manufactured and tested to meet or exceed AWWA C503 and C550 requirements. The valve’s orifice-free body eliminates potential leak paths while maintaining minimal pressure drop (less than 0.5 psi at 500 gpm). Its FDA-compliant, NSF H1 Registered oil-filled piston assembly dampens pressure surges when closing, reducing water hammer to 25 psi or less. 800-423-1323; www.joneswaterproducts.com
Oatey 4 in. PVC Backwater Valve
The Oatey 4 in. PVC Backwater Valve is a sewage check valve designed to prevent pumped water from flowing back into the basin. The valve has an elastomeric seal inside the flapper that ensures a tight seal, preventing fluid from entering. Additionally, it can accommodate access sleeves made of Schedule 40 pipe, has hub-by-hub solvent welded connections and can protect low areas or basements from backflow or waste from street sewers. The threaded access cap incorporates a neoprene seal for positive sealing and can be tightened or removed by hand. The valve fits DWV pipe and can be adapted for sewer and drain pipes. It also comes in a 3-inch size and is offered in ABS or PVC material. 800-321-9532; www.oatey.com
PROCO ProFlex 710TT Rubber Check Valves
ProFlex 710TT Rubber Check Valves from PROCO ensure 100% mixing capability in potable water and reservoir/storage tanks. The torsional flow design provides a unique spinning motion, which has never been offered before and is a standalone feature. Its operational values require less head pressure and less pump energy. The valve operates on a similar principle to wind turbines, where increased pitch results in faster spinning, optimizing flow patterns to significantly reduce blending times and costs. Designed to bolt directly to existing flanges or new installations, the valve is a fully passive flow device requiring no maintenance or outside sources of power or manual assistance to operate. Rubber check valves will handle large obstructions without jamming or having swing gates bind open. Advanced software is utilized to design tanks of any shape, enabling precise calculations for blend times, valve locations, sizes and quantities, ensuring optimal blending practices. 800-344-3246; www.procoproducts.com
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