Watts RK 919-CK1 3/4 Lead-Free RPZ Backflow Preventer

The Watts RK 919-CK1 3/4 is a genuine lead-free first check kit for 3/4" 919 / LF919 reduced pressure zone (RPZ) backflow preventers. This model is certified lead-free for potable-water installations.

This first check repair kit provides all the parts necessary to repair or replace the first check on a 3/4 inch reduced pressure zone assembly backflow preventer, model LF919. This kit consists of the check assembly, spring, and cover O-ring.

Features

• Factory replacement kit
• No special tools required for servicing
• All parts are made of high quality materials
• Serviceable in the field

Common Questions

Will this kit fit my valve?

The RK 919-CK1 3/4 fits the 3/4" size of Watts series 919 / LF919. Kits are size- and series-specific, so match the model stamped on your valve body or cover before ordering.

What's included in this kit?

This is a first check kit. Kit consists of: the check assembly, spring, and cover O-ring.

Are these genuine Watts parts?

Yes. This is the factory RK 919-CK1 3/4 kit built with genuine Watts OEM components. Aftermarket parts can void your assembly approval and are commonly rejected by inspectors at annual test time.

Which kit do I need if my relief valve failed the test?

Not this one — this kit services the check valve. A failed relief valve needs the RV (rubber parts) or VT (total relief valve) kit for 919 / LF919 in your size; a total repair (T) kit covers the relief valve and both checks.

Specifications

• Type: RPZ
• Pack Quantity: 8
• Country of Origin: United States
• Warranty: 1 Year Limited
• MPN: RK 919-CK1 3/4
• Lead-Free: Yes
• Product Role: repair_kit
• Kit Type: First Check Kit
• Fits Brand: Watts
• Fits Valve Series: 919;LF919
• Fits Valve Size: 3/4"
• Used With: 3/4" 919;3/4" LF919
• Kit Contents: Kit consists of: the check assembly, spring, and cover O-ring.
• Watts Ordering Code: 0888111
• Genuine OEM Parts: Yes