Blow out bonnet (bob for short)

Rugged and Designed to Succeed

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BOB allows you to still winterize your customers system even if the factory poppet and bonnet are broken, frozen, damaged or missing! 

USA MADE

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BOB is CNC machined out of solid 6061 T-6 aluminum, anodized for durability,  carries a 3 year warranty and is Made in the U.S.A. 

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About the Blow out Bonnet

Additional Information

Additional Information

Introducing the Blow Out Bonnet or BOB for short. This tool will completely change the way you winterize residential lawn sprinklers that have a pressure vacuum breaker (PVB).

With this tool you will be able to save on average 15 minutes per residential winterization. Essentially cutting your time per job in half. BOB will allow you to almost double productivity while keeping labor costs the same.  Enabling you to get another 5-10 jobs done per day. Take your price per winterization and multiply it by 5 or 10 times and the profits add up quickly!

Let me explain how it works.  The Blow Out Bonnet replaces the factory bonnet during winterization. Just simply remove the factory poppet and bonnet and screw BOB in its place. BOB has a 3/4" threaded hole in the top allowing you to use a 3/4" hose. This will provide 6 times the volume of air versus a 1/4" test port and 9 times the volume of air the  1/8" test port.  It is designed to be used with an air compressor  that produces over 100 CFM.

BOB allows you to still winterize your customers system even if the factory poppet and bonnet are broken, frozen, damaged or missing!

BOB is CNC machined out of solid 6061 T-6 aluminum, anodized for durability,  carries a 3 year warranty and is Made in the U.S.A.

The Blow Out Bonnet comes in 5 different models fitting almost all 1" and 3/4" PVB's.

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Purchase Info

Priced at $79.99 per item or purchase a complete set of 5 for $399.95 plus tax and shipping.


Blow Out Bonnet replacement O Ring Kits available in packs of 10 for $4.99.


Contact us to buy directly, find a nationwide distributor or for dealer inquiries. 


Call: 712.256.3500 to place an order.

Jason Downing, speaking about the Blow out bonnet

Check out this great video, in it he explains the Blow Out Bonnet and how it will benefit your operation.