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The Febco FE905-212 is the replacement bonnet and poppet kit for Febco 1 - 1-1/4 inch pressure vacuum breaker assemblies.
FEBCO is so confident of the heavy-duty construction and "freeze plug" design of the Series 765, it is the only manufacturer to offer a lifetime warranty on the bronze valve body of the 1⁄2" through 11⁄4" models*. In most pressure vacuum breaker designs, the bronze body can split open when water inside expands in freezing temperatures. When this happens, the whole unit must be replaced which can be expensive and downright inconvenient. But should an unexpected freeze catch your irrigation system.
Series 765 Pressure Vacuum Breaker Features: Only FEBCO offers a Lifetime Warranty on the bronze body of the 1⁄2" through 11⁄4" Series 765.
The exclusive "freeze plug" design feature of the 1⁄2" through 11⁄4" models prevents freeze damage to the bronze body and limits damage to less expensive internal components. Unique check valve design reduces check valve fouling and chattering providing longer life and more reliable operation.
Vandal/tamper resistant brass canopy and test cocks mean trouble-free performance. Engineered plastic and brass internal parts resist chemical and mineral deposit build-up for more reliable performance. Heavy duty engineered plastic poppets provide reliable operation.
Here are Two Ways to Determine the Size Kit You Need:
| Symptom | Cause | Solution |
| 1. Check valve fails to hold 1.0 PSID minimum |
A. Debris on sealing surface or guide surfaces valve surfaces B. Damage seat disc C. Weak or broken spring D. Poppet broken due to thermal expansion |
A. Disassemble and clean check B. Disassemble and replace seal C. Disassemble and replace spring D. Replace broken poppet
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| 2. Poppet fails to open at 1.0 PSIG minimum |
A. Debris restricting free operation B. Poppet seal adhering to bonnet C. Weak spring load |
A. Disassemble and clean check valve surfaces B. Disassemble and clean and/or replace damaged parts C. Replace bonnet assembly (1/2 - 11/4) |
| 3. Minor leakage through air vent |
A. Damaged poppet seal B. Cracked or damaged poppet C. Cracked bonnet or damaged sealing edge D. Debris on sealing surface |
A. Disassemble and replace seal B. Disassemble and replace poppet seal C. Disassemble and replace bonnet assembly D. Disassemble and clean |
| 4. Significant discharge through air vent |
A. Poppet not properly guided B. Major poppet or seal failure C. Low downstream pressure D. Insufficient inlet volume to operate device E. Poppet and or bonnet broken |
A. Disassemble and replace damaged parts B. Disassemble and replace damaged parts C. Check pressure at #2 testcock; should be higher than 5 PSIG if low system D. Pressure needs to be increased or partially closed outlet ball valve to create higher pressure on poppet. E. Replace broken bonnet/poppet due to thermal expansion (see freeze protection) |
| 5. Chatter during flow conditions |
A. Worn, damaged or defective check valve guide |
A. Disassemble and repair or replace guide |
*Red indicates repair parts sold at the Sprinkler Warehouse
How to Replace the Bonnet and Poppet (you should always change both):
90% of the Pressure Vacuum Breakers (PVB) installed for a typical residential home are 1" PVB's
Kit 905-211: includes the Bonnet and Poppet Assemblies for both 1/2" and 3/4" Pressure Vacuum Breakers
905-212: includes the Bonnet and Poppet Assemblies for both 1" and 1 1/4" Pressure Vacuum Breakers
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The FE905-212 Febco Repair Kit includes a rubber O-ring, spring, E-ring, washer, stem, bonnet, and poppet. All parts are genuine and original to the valve. Requiring no special tools for the repair and installation process, this kit is a real lifesaver for your pocketbook and bank. Quickly fix water spillage and waste with this wonderful product from Sprinkler Warehouse.
Pressure Vacuum Breakers are notorious for breaking under freezing weather conditions. Fortunately, 765s are made with a durable bronze body for extra freeze resistance and the bonnet and poppet come with unique freeze-plug technology for the best freeze protection available. In order to repair a broken 765 simply drain the body, remove the broken interior pieces, and then replace the removed parts with the items in this kit.
Outside of the durable bronze body of a 765 PVB, Febco offers unique and original product replacements for the interior components of the 765. The lightweight poppet seals the air in minimal flow scenarios, and all internal parts are serviceable from the top of the unit. The repair kits are easy to use, requiring no special tools, and comes with directions.
PVBs like the 765 are important for backflow prevention, as they protect potable water from contaminants that may be present in the irrigation system's internal water. This could lead to illness or possibly, in extreme cases, death. PVBs will leak water from the top if they are not working, so it's easy to identify and fix the problem. Buy your repair kit now at Sprinkler Warehouse.
Turn off the water supply first. Next, turn off the inlet ball valve and open the test cocks. Then close the outlet ball valve. Remove the interior pieces from the 765, then place the O-Ring around the bonnet. Fitt the poppet into the bonnet, and thread the bonnet into the PVB. Make sure to hand tighten only! Replace the brass canopy and tighten the nut on top with a wrench. Turn on the water supply, and open the inlet valve first, then the outlet valve.
The base of the poppet can be measured to determine what size your PVB is. If your poppet measures between 1 1/8" and 1 3/16", then you have either a 3/4 or 1/2 inch PVB. If your poppet measures 1 7/8" across the bottom then it's a 1 or 1 1/4 inch PVB. And if you have one that measures 3 7/16" or over then you have a 1 1/2 inch or larger PVB.
A pressure vacuum breaker backflow looks like a right-angle piece of bronze or other metal with a bell/canopy on top of the right angle. There are often two valves, one on each side of the joint in the device. The backflow is designed to prevent backsiphonage with minimum head loss.
| Brand | Febco |
|---|---|
| Series | Febco PVB Bonnet/Poppet Kit |
| Backflow Compatability | Febco PVB Repair |
| Warranty | 1 Year |
| Size | 1 in. - 1-1/4 in. |
| Type | PVB Repair Kit |
