Febco 860 RPZ Backflow Preventer 3/4 in. FPT — compact RPZ with 175 psi rating and quarter-turn shutoffs

Febco 860 RPZ Backflow Preventer FE860-075 is a 3/4" FPT reduced-pressure zone assembly built to protect potable water from hazardous cross-connections in irrigation, fireline, and industrial applications.

The Febco 860 series compact RPZ is engineered for situations where a reliable barrier against backflow is required but space is limited. Designed to meet plumbing codes and water authority mandates for non-potable service protection, this model balances small diameter design with robust performance. It installs inline on 3/4" female pipe threads and is suited to outdoor irrigation and industrial water systems where a reduced pressure zone (RPZ) assembly is the specified method of backflow control.

How does the Febco 860 RPZ protect my drinking water?

The assembly uses two independently acting check valves separated by a pressure-monitored relief zone. If either check begins to leak or pressure conditions indicate backflow risk, the relief port discharges to atmosphere instead of allowing contamination into the supply. This layered design complies with standard industry practices for health-hazard protection.

• Dual check valves with intermediate relief for fail-safe protection
• Relief port discharges to prevent backpressure or backsiphonage entry
• Designed to meet national plumbing code requirements for RPZ installations

What are the key performance specs and operating limits?

The FE860-075 is rated for a maximum working pressure of 175 psi and a hydrostatic test pressure of 350 psi, ensuring durability under common municipal and commercial pressures. Temperature capability ranges from 32°F to 140°F, covering typical outdoor irrigation and building service temperatures. The unit includes quarter-turn shutoff valves for faster maintenance and testing.

• Maximum working pressure: 175 psi
• Hydrostatic test pressure: 350 psi
• Operating temperature range: 32–140°F
• Quarter-turn shutoff valves for easy isolation

How do I install and maintain the 3/4" Febco 860 RPZ?

Installation requires a straight, level run of pipe with accessible clearance above and around the device for testing and relief discharge. Use compatible threaded fittings and follow local code instructions; most authorities require annual testing by a certified backflow tester. Routine maintenance focuses on verifying shutoff operation, leak-free checks, and proper relief port function.

• Threaded 3/4" FPT connections for inline installation
• Leave adequate space for testing and relief discharge
• Annual certification testing typically required by water authorities

Why choose the compact Febco 860 for small-diameter applications?

The 860 series was developed to deliver full RPZ protection in installations where large assemblies won’t fit or are unnecessary. Its small-diameter footprint minimizes piping impact while still meeting the protection standards demanded for health-hazard scenarios. The compact design simplifies retrofits and helps maintain system aesthetics without sacrificing safety.

• Small diameter suited to constrained spaces and retrofits
• Full reduced-pressure protection for health-hazard cross-connections
• Lower visual and plumbing profile compared with larger assemblies

Who is this for: The Febco 860 RPZ FE860-075 is intended for contractors, irrigation professionals, property managers, and facility engineers who need a code-compliant backflow solution for 3/4" lines. It’s appropriate where potable water protection is mandatory—such as residential and commercial irrigation systems, fireline connections that require cross-connection control, and industrial process lines—especially when space is limited and an easy-to-test, durable RPZ is required.