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Febco 825YA 1 Inch Angled Reduced Pressure Zone Assembly w/Block Valves

Febco 825YA 1 Inch Angled Reduced Pressure Zone Assembly

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CODE: 825EBV70

List price: $653.85
Our price: $335.95
You save: $317.90 (49%)
11 item(s)


Febco 825YA

Angle Pattern Reduced Pressure Zone Assembly w/Block Valves





Size: 3/4" - 2" (20mm - 50mm)

The FEBCO Series 825YA Reduced Pressure Zone Assemblies are used to protect against toxic fluids in water services to industrial plants, hospitals, morgues, mortuaries, and chemical plants. They are also used in irrigation systems, boiler feeds, water lines and other installations requiring the highest level of mechanical protection. End connection – NPT ANSI/ASME B1.20.1



• Installation versatility simplifies new and retrofit installations.

• Eliminates pipe elbows, nipples and unions from the installation.

• Reduces installation time, labor costs and materials.

• Compact design simplifies retrofit.

• Integral flanged union connections allow assembly to be removed from the line for freeze protection or maintenance without the danger of spool substitution.

• Approved by the Foundation for Cross-Connection Control and Hydraulic Research at the University of Southern California.

• Modular relief valve and check valve internal components for ease of maintenance.

• Smaller, less costly protective enclosures can be used to

provide freeze and vandalism protection due to compact size of valve.

• Field tested design for reliability and performance.

• Replaceable seat rings for longer valve life.

• Low head loss for optimum performance.



In a flow condition, the check valves are open with the pressure between the checks, called the zone, being maintained at least 5psi (34 kPa) lower than the inlet pressure. The relief valve is held closed by the pressure differential. Should abnormal conditions arise under no flow or reversal of flow, the differential relief valve will open and discharge to maintain the zone at least 2psi (14 kPa) lower than the supply. When normal flow resumes, the zone’s differential pressure will return and the relief valve will close.


Approvals – Standards

• Approved by the Foundation for Cross-Connection Control and Hydraulic Research at the University of Southern California.

• ANSI/AWWA C511 Conformance



The reduced pressure zone assemblies shall consist of two independently operating, spring loaded, "Y" pattern check valves and one hydraulically dependent differential relief valve. Should the differential between the upstream and the zone of the unit drop to 2psi (14 kPa), the differential relief valve shall open and maintain the proper differential.

Mainline valve body and caps including relief valve body and cover shall be bronze. Check valve moving members shall be center stem guided. Relief valve shall have a  removable seat ring. Check valve and relief valve components shall be constructed so they may be serviced without removing the valve body from the line. All seat discs shall be reversible. The assembly shall include flanged unions located between the mainline valve body and the ball valve shutoffs to allow for field removal for freeze protection or maintenance without danger of spool replacement. The assembly shall be rated to 175psi (12.1 bar) water working pressure and water temperature range  from 32ºF to 140ºF (0ºC – 60ºC). The assembly shall meet the requirements of the USC Foundation of Cross- onnection Control and Hydraulic Research, Eighth Edition.

The assembly shall be a FEBCO Series 825YA or prior approved equal.



Main valve body: Bronze

Relief valve body: Bronze

Elastomers: Nitrile Seat Discs

Diaphragms: Nitrile, fabric reinforced

Springs: Stainless Steel


Pressure – Temperature

Maximum working pressure: 175psi (12.1 bar)

Hydrostatic test pressure: 350psi (24.1 bar)

Temperature range: 32ºF to 140ºF (0ºC to 60ºC)







Helpful Tools


Adobe Required Febco 825YA Installation Instructions



Adobe Required Febco 825YA Specification Sheet



Adobe Required  Febco 825YA Maintenance Manual



Adobe Required  Febco 825YA Cross-Connection Control Handbook



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