ENGLISH INSTRUCTIONS
WARNING
!
Read this Manual BEFORE using this equipment.
Failure to read and follow all safety and use information can result in death,
serious personal injury, property damage, or damage to the equipment.
Keep this Manual for future reference.
Local building or plumbing codes may require modifications to the
information provided. You are required to consult the local building
and plumbing codes prior to installation. If the information provided
here is not consistent with local building or plumbing codes, the
local codes should be followed. This product must be installed by a
licensed contractor in accordance with local codes and ordinances.
WARNING
!
Need for Periodic Inspection/Maintenance: This product must be
tested periodically in compliance with local codes, but at least once
per year or more as service conditions warrant. All products must be
retested once maintenance has been performed. Corrosive water condi-
tions and/or unauthorized adjustments or repair could render the product
ineffective for the service intended. Regular checking and cleaning of the
product’s internal and external components helps assure maximum life
and proper product function.
WARNING
!
Pressure — Temperature
Working Temperature: 33°F - 140°F (0.5°C - 60°C)
Maximum Pressure: 150psi (10.3 bar)
Minimum Pressure: 15psi (103 kPa)
Testing
For field testing procedure, refer to Watts installation sheets
IS-TK-DP/DL, IS-TK-9A, IS-TK-99E and IS-TK-99D found on Watts.com.
For other repair kits and service parts, refer to our Backflow Prevention
Products Repair Kits & Service Parts price list PL-RP-BPD found on
Watts.com.
For technical assistance, contact your local Watts representative.
RP/IS-800M4QT 1529 EDP# 1915087 © 2015 WattsRP/IS-800M4QT 1529 EDP# 1915087 © 2015 Watts
RP/IS-800M4QT 1529 EDP# 1915087 © 2015 Watts
WARNING: This product contains chemicals known to the
State of California to cause cancer and birth defects or other
reproductive harm.
For more information: Watts.com/prop65
ADVERTENCIA: Este producto contiene sustancias químicas
que en el Estado de California se conocen como causantes
de cáncer y malformaciones u otros daños reproductivos.
Para más información: Watts.com/prop65
AVERTISSEMENT: Ce produit contient des produits chi-
miques reconnus par l’État de Californie comme étant can-
cérigènes et pouvant provoquer des anomalies congénitales
ou affecter la capacité de reproduction.
Pour plus d'informations: Watts.com/prop65
USA: Tel: (978) 689-6066 • Fax: (978) 975-8350 • Watts.com
Canada: Tel: (905) 332-4090 • Fax: (905) 332-7068 • Watts.ca
Latin America: Tel: (52) 81-1001-8600 • Fax: (52) 81-8000-7091 • Watts.com
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 ship-
ment. 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.
USA: Tel: (978) 689-6066 • Fax: (978) 975-8350 • Watts.com
Canada: Tel: (905) 332-4090 • Fax: (905) 332-7068 • Watts.ca
Latin America: Tel: (52) 81-1001-8600 • Fax: (52) 81-8000-7091 • Watts.com
Garantía limitada: Watts Regulator Co. (en adelante, “la Compañía”) garantiza, por un período de un año a
partir de la fecha de embarque original, que sus productos están libres de defectos en materiales y mano de obra
bajo condiciones de uso normal. En caso de que se encuentren tales defectos dentro del período de garantía, la
Compañía reemplazará o reacondicionará, a su elección, el producto sin costo alguno.
LA GARANTÍA AQUÍ ESTIPULADA SE OTORGA EN FORMA EXPRESA Y ES LA ÚNICA GARANTÍA
OTORGADA POR LA COMPAÑÍA EN RELACIÓN CON EL PRODUCTO. LA COMPAÑÍA NO OTORGA NINGUNA
OTRA GARANTÍA, YA SEA EXPRESA O IMPLÍCITA. LA COMPAÑÍA POR LA PRESENTE RENUNCIA
ESPECÍFICAMENTE A TODAS LAS DEMÁS GARANTÍAS, EXPRESAS O IMPLÍCITAS, INCLUYENDO SIN
LIMITACIÓN, LAS GARANTÍAS IMPLÍCITAS DE APTITUD PARA LA COMERCIALIZACIÓN E IDONEIDAD PARA
UN PROPÓSITO EN PARTICULAR.
La solución descrita en el primer párrafo de esta garantía constituirá la única y exclusiva solución por
incumplimiento de garantía, y la Compañía no se hará responsable por daños accidentales, especiales o
indirectos, incluyendo sin limitación, la pérdida de ganancias o el costo de reparación o reemplazo de otra
propiedad que resulte dañada por el mal funcionamiento de este producto, otros costos resultantes por mano
de obra, retardos, vandalismo, negligencia, obstrucciones ocasionadas por materiales extraños, daños debidos
a condiciones adversas del agua, químicos o cualquier otra circunstancia sobre la cual la Compañía no tenga
control. Esta garantía no tendrá validez en cualquier caso de abuso, uso indebido, aplicación incorrecta,
instalación inadecuada, o mantenimiento adecuado o alteración del producto.
Algunos Estados no permiten limitaciones en la duración de una garantía implícita y algunos Estados no permiten
la exclusión o limitación de daños accidentales o indirectos. Por lo tanto, es posible que las limitaciones
anteriores no sean aplicables en su caso. Esta garantía limitada le da derechos legales específicos; usted
podría tener también otros derechos que varían según el Estado. Usted debe consultar las leyes estatales
aplicables para determinar sus derechos. EN LA MEDIDA EN QUE SEA CONGRUENTE CON LAS LEYES
ESTATALES APLICABLES, CUALQUIER GARANTÍA IMPLÍCITA QUE NO SEA RECHAZADA, INCLUYENDO LAS
GARANTÍAS IMPLÍCITAS DE APTITUD PARA LA COMERCIALIZACIÓN E IDONEIDAD PARA UN PROPÓSITO EN
PARTICULAR, SE LIMITA EN SU DURACIÓN A UN AÑO A PARTIR DE LA FECHA DEL EMBARQUE ORIGINAL.
USA: Tel: (978) 689-6066 • Fax: (978) 975-8350 • Watts.com
Canada: Tel: (905) 332-4090 • Fax: (905) 332-7068 • Watts.ca
Latin America: Tel: (52) 81-1001-8600 • Fax: (52) 81-8000-7091 • Watts.com
Garantie limitée : Watts Regulator Co. (la « Société ») garantit que chacun de ses produits est exempt de
vice de matériau et de fabrication dans des conditions normales d’utilisation pour une période d’un an à
compter de la date d’expédition d’origine. Dans l’éventualité où de tels vices se manifesteraient pendant
la période de garantie, la Société, à sa discrétion, remplacera ou reconditionnera le produit sans frais.
LA PRÉSENTE GARANTIE EST EXPRESSE ET REPRÉSENTE LA SEULE GARANTIE OFFERTE PAR
LA SOCIÉTÉ POUR CE PRODUIT. LA SOCIÉTÉ N’OFFRE AUCUNE AUTRE GARANTIE, EXPRESSE OU
TACITE. PAR LA PRÉSENTE, LA SOCIÉTÉ REJETTE SPÉCIFIQUEMENT TOUTE AUTRE GARANTIE,
EXPRESSE OU TACITE, NOTAMMENT TOUTE GARANTIE TACITE DE QUALITÉ MARCHANDE OU
D’ADAPTATION À UN BUT PARTICULIER.
Le recours décrit dans le premier paragraphe de cette garantie constitue le seul recours à toute violation
de la présente garantie. La Société ne saurait être tenue responsable de tout dommage accessoire,
spécial ou indirect, y compris, de façon non limitative : la perte de profits ou le coût afférent à la
réparation ou au remplacement d’autres biens qui seraient endommagés par suite du fonctionnement
incorrect dudit produit ; d’autres coûts résultant de frais de main-d’œuvre, de retards, de vandalisme,
de négligence, d’une obstruction causée par des matériaux étrangers, de dommages causés par une
eau impropre, des produits chimiques ou par tout autre événement échappant au contrôle de la Société.
La présente garantie est déclarée nulle et non avenue en cas d’usage abusif ou incorrect, d’application,
d’installation ou d’entretien incorrects ou de modification du produit.
Certains États n’autorisent pas les limitations de durée d’une garantie tacite ou l’exclusion ou la
limitation des dommages accessoires ou indirects. Les limitations susmentionnées peuvent donc ne pas
s’appliquer à vous. Cette garantie limitée vous donne des droits spécifiques et il se peut que vous ayez
aussi d’autres droits qui varient d’un État à l’autre. Veuillez vous référer aux lois applicables de l’État pour
déterminer vos droits en la matière. DANS LA MESURE PERMISE PAR LA LOI APPLICABLE DE L’ÉTAT,
TOUTES LES GARANTIES TACITES NE POUVANT PAS ÊTRE REJETÉES, Y COMPRIS LES GARANTIES
TACITES DE QUALITÉ MARCHANDE ET D’ADAPTATION À UN BUT PARTICULIER, SONT LIMITÉES
QUANT À LEUR DURÉE À UN AN À COMPTER DE LA DATE D’EXPÉDITION D’ORIGINE.
Installation
Requirements:
1. Install 12" (305mm) above highest point of downstream piping see Fig. 1.
2. Install bonnet side up and allow for accessibility for testing/service.
3. Install where discharge or spillage is not objectionable.
4. Do not undersize supply or oversize the valve in relation to demand.
5. Do not install where backpressure can occur.
6. Protect from freezing - for Freeze Protection specify Model 800M4FR or
LF800M4FR. Freeze protection can also be provided using a WattsBox
insulated enclosure. Send for ES-WB for additional information.
7. ASSE Standard 1020 requires that the atmospheric vent valve remains
open until the valve body pressure exceeds 1 lb. Until this pressure is
reached, some amount of spillage will occur at the atmospheric vent. In
order to minimize this leakage on start-up close the down stream shutoff
valve and open inlet shutoff valve quickly.
Start Up Procedure
1. Close #2 (outlet) shutoff
2. Slowly open #1 (inlet) shutoff until water comes out bonnet then quickly open to
pressurize valve.
3. Open #2 shutoff
Service:
1. Open test cocks to drain in cold climates if only
operated seasonally.
2. Replace rubber goods every 5 years.
WattsBox
Fig. 1
1. Close main shutoff valve.
2. Open upstream drain, test cocks and isolation ball valves to depressurize line.
3. Purge with pressurized line.
4. Leave test cocks and isolation ball valve handles in 45° angle to drain ball
valves and prevent casting damage.
Freeze Protection Guidelines
Purging of a PVB Assembly with Pressurized Air
Flow
Upstream (Inlet) Drain
Outlet Drain
Valve
12" Minimum Clearance
Above the Highest Point of
Downstream Piping
Zone Control
Valve Pit
Sprinkler System
Piping
Union
Main Shutoff Valve
▼
▼
To
Sprinklers
Key
Drain Port
or
Blow Down
Water
Supply
Watts TWS
TWS with Watts Series 800M4/LF800M4
Pressure Vacuum Breaker
Typical Installation
Using TWS Hydrant
NOTICE
PVB's must be installed a minimum of 12" (305mm) above the highest
point of water in the sprinkler system. (See Fig. 1)
Service and Replacement Parts
Internal parts can be removed, repaired or inspected without removing the
valve from the piping.
Disassembly
1. Shut off the supply pres-
sure and drain the valve.
2. Remove the two hood
screws and the hood.
3. Place a wrench on the parallel flats of bonnet and stem assembly. Turn
counter clockwise and remove.
4. Remove the vent assembly.
5. Press down on the spring retainer and disengage it from the retaining
lugs. Then turn 90° and remove.
6. Remove the spring retainer and spring. Note that the large diameter of the
spring is down on the guide assembly.
7. Remove the check disc holder and guide assembly.
8. Disassemble the check disc holder assembly.
9. Remove seat (if required) by turning counterclockwise.
Reassembly
Reassemble in the reverse order utilizing the new parts from the repair kit.
Watts 800M4QT/LF800M4QT
1" - 2" (25 - 50mm)
Watts 800M4QT/LF800M4QT
1
⁄2",
3
⁄4" (15 - 20mm)
Watts reserves the right to change or modify product design, construction, specifica-
tions, or materials without prior notice and without incurring any obligation to make
such changes and modifications on Watts products previously or subsequently sold.
†
Fits 800M4FR/LF800M4FR Model
*The wetted surface of this product contacted by consumable water contains
less than 0.25% of lead by weight.
For repair kits and parts, refer to our Backflow
Prevention Products Repair Kits & Service Parts
price list PL-RP-BPD found on Watts.com.
S eries 800M4 & LF800M4
Anti-Siphon Pressure Vacuum Breaker
featuring Replaceable Seats
Disyuntor de vacío a presión anti sifón
con asientos reemplazables
Dispositif brise-vide à pression anti-siphonnement
équipé de sièges remplaçables
1
⁄2" - 2" (15 - 50mm)
RP/IS-800M4QT
800M4QT
Installation Instructions • Instrucciones de instalación • Instructions d’installation
800M4QT