Watts Air Gaps User Manual

Air Gap Installation Instructions

Watts Air Gap Drains are designed to collect water that is being discharged by the relief valve, due to minor check valve fouling and/or line pressure fluctuations.

Note: Air Gap Drains are not designed to collect the full discharge capacity of the relief valve.

IS-AirGaps

Series 957 and 957RPDA Air Gaps

Sizes: 21⁄2" – 10" (65 – 250mm)

Splash Guard

Air Gap Drain Funnel

1. Remove L shape bracket from one side of air gap drain.

2. Remove screw from one side of the splash guard.

3. Slide one half of the splash guard into the groove on the relief valve body.

4. Slide the other half of the splash guard into the groove on the relief valve body and reassemble the two parts together.

5. Reattach the L shape brackets long side up into slots in the splash guard with screws.

6. Push as much of the sensing hose as possible into the air gap drain funnel to prevent over spray.

Series 994 and 994RPDA Air Gaps

Sizes: 21⁄2" – 10" (65 – 250mm)

Horizontal

1. Remove two of the relief valve capscrews 180° apart.

2. Remove the relief valve hose from fitting below inlet ball valve.

3. From the top of the air gap, thread the relief valve hose down and out the slot.

4. Use

5. Reconnect relief valve hose to the fitting below the inlet ball

Vertical

1. Detach the sensing line from the inlet ball valve and the elbow

2. Remove the elbows from the relief valve base.

3. Hang the Air Gap Drain on the body of the relief valve (Fig. 2).

4. Reinstall the elbow into the base of the relief valve to hold the

5. Install the rigid fitting end of the sensing line to the elbow on

⁄4: - 20 UNC x 1" long stainless steel screws.

valve (Fig. 1).

on the relief valve.

Air Gap Drain in place.

the base of the relief valve and the swivel end to the fitting on the ball valve.

Fig. 1

Fig. 2

Series 009, 909, 909RPDA and 919 Air Gaps

Sizes: 1⁄4" – 10" (8 – 250mm)

009

Air Gap

1. Air Gap installs easily to the bottom of the 009, 909, 909RPDA and 919 backflow assembly relief valve.

2. Attach to the outlet of the relief valve using screws.

3. For vertical installations use optional elbows as shown below.

909RPDA

Size: 2

/2" – 10"

(65 – 250mm)

Air Gap

919

Size:

/4" – 2"

(20 – 50mm)

Air Gap

⁄4" – 2" 909

(20 – 50mm)

Elbow

Air Gap

Limited Warranty: Watts Regulator Co. (the “Company”) warrants each product to be free from defects in material and workmanship under normal usage for a period of one year from the date of

original shipment. In the event of such defects within the warranty period, the Company will, at its option, replace or recondition the product without charge.

THE WARRANTY SET FORTH HEREIN IS GIVEN EXPRESSLY AND IS THE ONLY WARRANTY GIVEN BY THE COMPANY WITH RESPECT TO THE PRODUCT. THE COMPANY MAKES NO OTHER WARRANTIES, EXPRESS OR IMPLIED. THE COMPANY HEREBY SPECIFICALLY DISCLAIMS ALL OTHER WARRANTIES, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.

The remedy described in the first paragraph of this warranty shall constitute the sole and exclusive remedy for breach of warranty, and the Company shall not be responsible for any incidental, special or consequential damages, including without limitation, lost profits or the cost of repairing or replacing other property which is damaged if this product does not work properly, other costs resulting from labor charges, delays, vandalism, negligence, fouling caused by foreign material, damage from adverse water conditions, chemical, or any other circumstances over which the Company has no control. This warranty shall be invalidated by any abuse, misuse, misapplication, improper installation or improper maintenance or alteration of the product. Some States do not allow limitations on how long an implied warranty lasts, and some States do not allow the exclusion or limitation of incidental or consequential damages. Therefore the above limitations may not apply to you. This Limited Warranty gives you specific legal rights, and you may have other rights that vary from State to State. You should consult applicable state laws to determine your rights.

MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, ARE LIMITED IN DURATION TO ONE YEAR FROM THE DATE OF ORIGINAL SHIPMENT.

SO FAR AS IS CONSISTENT WITH APPLICABLE STATE LAW, ANY IMPLIED WARRANTIES THAT MAY NOT BE DISCLAIMED, INCLUDING THE IMPLIED WARRANTIES OF

Backflow Prevention Products

Canada: 5435 North Service Rd., Burlington, ONT. L7L 5H7; www.wattscanada.ca

USA: 815 Chestnut St., No. Andover, MA 01845-6098; www.watts.com