VPASU Anti-Siphon Valve Kit

Technical Specification

• CPS Anti-Siphon Valve 1/4″, 3/8″, 1/2″-20 FFL for Vacuum Pumps
• Prevents cross-contamination of vacuum pump and compressor oils inside an A/C or refrigeration system
• 90 Degree fittings to help with horizontal ports and angled vacuum port pumps
• 1/4″ SAE Male adapter included
• 1/2″ SAE Male adapter included
• 3/8″ SAE Male adapter included
• Install onto 3/8″ SAE Male vertical port
• Thread sealant included

Direction of Use

1. Select one of the three provided male fittings (1/4″ SAE Male, 1/2″-20 Male or 3/8″ SAE Male) to be mounted onto the female 1/8″ female pipe fitting on top of the VPASU Body.
2. Apply small amount of thread sealant onto the 1/8″ male pipe thread on the selected male fitting.  Hand tighten the selected male fitting into the VPASU body.
3. Use a back-up wrench to secure the VPASU body while using another wrench to do the final tightening of the elected male fitting.
4. For vertical pump ports go to Step 7
5. For horizontal vacuum ports, select one of the 90 degree fittings. Apply a small amount of sealant to the 1/16″ male pipe thread of the 90 degree fittings. Tighten the 90 degree fitting into 1/16″ female pipe thread on the bottom of the VPASU. To complete assembly go to Step 7.
6. For angled vacuum pump port, select both of the 90 degree fittings. Apply a small amount of sealant to the 1/16″ male pipe thread of the first 90 degree fitting. Tighten the 90 degree fitting into the 1/16″ female pipe thread provided on the bottom of the VPASU. Apply a small amount of sealant to the 1/16″ female thread on the first 90 degree fitting. Note: Adjust the positioning of the 1/16″ female pipe thread on the 2nd 90 degree fitting to match the angle of the vacuum pump post with the VPASU body in the vertical position
7. Select one of the three provided female swivel fittings (1/4″ SAE Female, 1/2″-20 Female, or 3/8″ SAE Female).
8. Apply a small amount of thread sealant onto the 1/16″ male pipe thread on the selected female swivel fitting. Use a 5/32″ Allen wrench to install into the 1/16″ female pipe thread on either the VPASU body or the 90 degree fitting.
9. The VPASU is now ready to install onto the vacuum pump.
10. The VPASU is a gravity directional device. The arrows around the collar of the VPAS must be pointing up.
11. VPASU device and vacuum pipe are now ready to be used.

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