Watts 957 Series User manual

IS-AirGaps

Air Gap Installation Instructions

Series 994 and 994RPDA Air Gaps

Sizes: 21⁄2" – 10" (65 – 250mm)

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 957 and 957RPDA Air Gaps

Sizes: 21⁄2" – 10" (65 – 250mm)

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.

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

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

valve (Fig. 1).

Vertical

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

on the relief valve.

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

Air Gap Drain in place.

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

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

the ball valve.

Fig. 1

Splash Guard

Air Gap Drain Funnel

Fig. 2

www.wattsreg.com

IS-AirGaps 0317 ©Watts Regulator Co. 2003 Printed in U.S.A.

EDP# 1915368

Series 009, 909 and 909RPDA Air Gaps

Sizes: 1⁄4" – 10" (8 – 250mm)

1. Air Gap installs easily to the bottom of the 009, 909 and

909RPDA 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.

Air Gap

009

Elbow

Air Gap

909RPDA

Size: 21/2" – 10"

(65 – 250mm)

Air Gap

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

Canada: 5435 North Service Rd., Burlington, ONT. L7L 5H7; www.wattscda.com

Limited Warranty: Watts 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. This 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 or

improper installation of the product. THIS WARRANTY IS IN LIEU OF ALL OTHER

WARRANTIES, EXPRESS OR IMPLIED, INCLUDING ANY IMPLIED WARRANTIES OF

MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Any implied warranties

that are imposed by law are limited in duration to one year.

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.

3⁄4" – 2" 909

(20 – 50mm)

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