Husky 1800 Series, 70 Series manual as required, Installation, Vacuum Breaker

Models: 1800 Series 70 Series

1 51
Download 51 pages 32.89 Kb
Page 15
Image 15
Vacuum Breaker

Installation

Vacuum Breaker

The vacuum breaker tubing kit can be used with any Series 70 or 1820 pump. The vacuum breaker is used to break a siphon should the nozzle drop below the fluid level in the tank while the pump is stuck in the open position. A threaded vacuum breaker, P/N 066570 is shipped installed in the pump. GASBOY recommends that the vacuum breaker be tubed back to the tank.

The illustration below shows two methods for installing tubing for the vacuum breaker. In all instances, the vacuum breaker must be tubed (using 1/4" tubing) to the vapor space at the top of the tank; if the tube is installed below the fluid level of the tank, the ability to break vacuum and prevent siphoning will be lost. Using the illustrated methods, the tube end may terminate into the annular vapor space between the 1" suction pipe and the 2" mounting pipe, or into an opening in the top of the tank. All components shown are provided when you order the kit, P/N 032700.

NOTE:

Tubing can be piped to any available opening on top of tank. Use reducer bushings

 

as required.

The illustration on the next page shows vacuum breaker tubing for installations where the pump is installed below the fluid level of the tank. For these installations, the tubing must run directly to the tank top. The tubing must be horizontal or must slope either toward the pump or the tank so there are no traps or low spots. Traps or low spots can severely affect vacuum breaker performance. Tubing length should not exceed eight feet.

9312

2-9

Page 15
Image 15
Husky 1800 Series, 70 Series manual as required, Installation, Vacuum Breaker