Watts Low Pressure Trap Primer LFTP3T

Please note that the A300T Watts A300 Trap Primer 1/2" is now obsolete. 

The Series LFTP3T-AUS operates by sensing a 20kPa (3psi) pressure drop in the supply line from the downstream fixtures or appliances. The pressure reduction above the Valve Disk (2) causes the disk to move upward, opening the Lower Disk Seal (4) and closing off the Upper Disk Seal (1). With the Lower Disc Seal (4) open, the stored air pressure in the air chamber (5) pushes a portion of the contained volume of water from the lower chamber out through the opening beneath the Lower Disk Seal (4) to prime the trap. When there is no longer a demand in the supply line, and the full line pressure is restored, the Valve Disk (2) lowers, opening the Upper Disk Seal, allowing flow through the One-Way Seal (3), seating the Lower Disc Seal (4) and recharging the Air Chamber (5) for the next pressure drop cycle. The Series LFTP3T-AUS features Lead Free* construction to comply with the Lead Free* installation requirements. This Engineering Sheet is not intended to replace the product installation and safety information available or the experience of a trained product installer. Please refer to the product installation instructions for further information. Activates with a 20kPa (3 psi) pressure drop between 170 to 860kPa operating pressure.

• Watermarked
• Lead-Free
• BSP thread
• Built-in Vacuum Breaker Ports (6)
• To be installed on a cold water line only