Febco Bonnet and Poppet Assembly Kit for 1/2" & 3/4" RK-Series — Complete OEM Repair Kit with O-ring and Stem

Febco RK-765 Bonnet and Poppet Assembly Kit supplies every genuine factory replacement part needed to service 1/2" and 3/4" pressure vacuum breakers quickly and correctly.

This complete repair kit from Febco groups the bonnet, poppet, O-ring, E-ring, spring, washer, stem and rubber disc into a single boxed solution so you can restore a pressure vacuum breaker without hunting individual components. Each piece is manufactured to Febco's original specifications to ensure fit and function inside existing RK-series devices. The kit aims to cut service time and prevent errors by including only compatible, tested parts, so technicians and maintenance teams get repairs done the first time.

What parts are included and why does each matter?

The kit contains the bonnet, poppet, O-ring, E-ring, spring, washer, stem and rubber disc — all engineered to February factory tolerances. These components work together to maintain the internal seal, movement and return action necessary for proper vacuum breaker operation.

• Bonnet: secures the assembly and interfaces with the valve body.
• Poppet: controls the flow path and seals against backflow.
• O-ring & rubber disc: provide resilient sealing surfaces to prevent leaks.
• Spring, stem, washer, E-ring: ensure correct alignment, compression and retention of moving parts.

How easy is installation for a technician or DIYer?

Installation is intentionally straightforward: parts are drop-in replacements designed for one-step assembly without specialized tools. Febco sized each component so technicians can replace the entire bonnet/poppet assembly quickly during routine service or emergency repairs.

• No specialty tools required — standard hand tools are sufficient.
• One-step fitment reduces service time and handling errors.
• Clear compatibility with 1/2" and 3/4" RK-series pressure vacuum breakers.
• Genuine parts eliminate trial-and-error sizing of aftermarket components.

Will these parts last and match original performance?

All components are made from durable materials and produced to Febco OEM specifications, so they replicate the original parts' mechanical properties. Using factory replacements helps maintain the original operational tolerances and reduces the likelihood of premature wear compared with generic substitutes.

• OEM manufacturing ensures consistent material grades and dimensions.
• Durable seals and springs resist common wear modes in backflow devices.
• Replacement with genuine parts helps preserve the breaker's designed response and lifecycle.

How do I confirm compatibility before ordering?

Confirm your pressure vacuum breaker is an RK-series unit sized 1/2" or 3/4" and check the model ID on the device body. If the device matches Febco RK-765 family sizing and bonnet/poppet layout, this kit is the correct OEM repair set.

• Check the valve nameplate or cast markings for RK-series identification.
• Verify nominal pipe size: 1/2" or 3/4" stamped on the device.
• If in doubt, photograph the existing assembly and compare with Febco documentation or contact support.

Who is this for? The Febco RK-765 Bonnet and Poppet Assembly Kit is ideal for plumbing contractors, irrigation technicians, building maintenance teams and DIY homeowners responsible for backflow prevention device upkeep. It suits anyone who needs a complete, tested set of OEM components to restore 1/2" or 3/4" Febco pressure vacuum breakers quickly and reliably while avoiding compatibility issues or extended downtime.