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Replacement Parts

Series 900

Service Parts Kit consists of:

First Check Valve Disc
Second Check Valve Disc
Set of O-rings (B, C, D, E)
Silicone Grease

For Prices:

Refer to Separate Replacement Parts Price Sheet, PL-RP/BPD.

Second Check Valve 

Spring Assembly

Second Check 

Valve Disc

Second Check Valve

(A) O-ring

(A) O-ring

1st Valve Seat

Relief Valve Seat

Relief Valve Spring

Piston  & Guide Assembly

Gasket 

Back-up 

Seat 

Back-up Third 

Check Valve 

First Check 

Valve Disc 

First Check 

Valve Spring 

(C) O-ring

Lock Nut

(D) Piston O-ring

    (E) O-ring

Note:

 Before re-assembly, grease Relief Valve Seat orifice, 

Piston Bore and Piston O-ring. Use silicone base grease.

RP-L900   0829 

EDP# 0834254 

© Watts, 2008

USA:

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

Canada:

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

W a t e r   S a f e t y   &   F l o w   C o n t r o l   P r o d u c t s

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.  

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

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

RP-L900.indd   4

9/24/08   8:15:39 AM

Summary of Contents for 900 Series

Page 1: ...mportant Inquire with governing authorities for local installa tion requirements Note For Australia and New Zealand line strainers should be installed between the upstream shutoff valve and the inlet of the backflow preventer RP L900 Watts product specifications in U S customary units and metric are approximate and are provided for reference only For precise measurements please contact Watts Technic...

Page 2: ...in a suitable receptacle F Inspect 1st check valve seat and discs for damage or deteri oration after wiping with a clean cloth G If damage or deterioration to either seat is evident remove the eight socket head screws and remove seat and gasket from valve See photo A H Reverse above procedure for reassembly Note Lubricate seat gasket with O ring grease Removal of First Check Valve Assembly I Inser...

Page 3: ...lding Allow valve to close Caution Keep fingers clear of closing P If second check valve is damaged or deteriorated remove six bolts from the flange of the second check valve module and remove the module Q After disassembly and cleaning reassemble the check valve module in the position shown in photo B R Inspect access door O ring seal to be sure it is in its proper position and close the door Rea...

Page 4: ...MPANY 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 ...

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