Watts FBT765CBV Instruction, Installation, Maintenance And Repair Manual
Watts FBT765CBV Instruction, Installation, Maintenance And Repair Manual

Watts FBT765CBV Instruction, Installation, Maintenance And Repair Manual

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Installation, Maintenance, and Repair Manual
Series 765
Pressure Vacuum Breaker Assembly
1/2" - 2"
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.
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 conditions 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.
Freeze sensor solely provides alerts about a possible freeze event
and cannot prevent a freeze event from occurring. User action is
required to prevent freeze conditions from causing product and/
or property damage.
Series 765 Pressure Vacuum Breakers are used to protect against
health hazard and non-health hazard backsiphonage conditions in
industrial plants, cooling towers laboratories, laundries, swimming
pools, and lawn sprinkler systems.
The series includes a sensor for use with SentryPlus Alert
to monitor temperature and alert facility personnel when freeze
conditions can cause damage to equipment. (The sensor is installed
on the assembly exterior and does not alter assembly functions
or certifications.) The monitoring system is compatible with BMS
and irrigation management systems, allowing freeze alerts to be
distributed according to the BMS or IMS application. When the
monitoring system is Wi-Fi enabled, notifications can be issued
through the Smart Freeze Alert cloud service.
An add-on connection kit (sold separately) is required to activate the
freeze sensor. Without the connection kit, the sensor is a passive
component that has no communication with any other device. (The
kit can also be used to install an alternative standalone outdoor
sensor or to retrofit existing installations. For ordering details, see
"Add-on/Retrofit Sensor Connection Kit.")
Use of the freeze sensor and activation kit with FZ models does not
replace the need to comply with all required instructions, codes, and
regulations related to installation, operation, and maintenance of the
PVB assembly.
Watts
is not responsible for the failure of alerts due to connectivity
®
issues, power outages, or improper installation.
Contents
technology
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RP/IS-F-765
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Questions and answers

james mlynarczyk
June 22, 2025

can 765-1 valve contribute to water hammering? when a zone is turn on the hammering occurs for 10 seconds in an upstairs bathroom sink. this unit has been repaired with the kit several years ago. I don't know of any arrestor in the water lines.

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Summary of Contents for Watts FBT765CBV

  • Page 1: Table Of Contents

    PVB assembly. Freeze sensor solely provides alerts about a possible freeze event and cannot prevent a freeze event from occurring. User action is Watts is not responsible for the failure of alerts due to connectivity ® required to prevent freeze conditions from causing product and/ issues, power outages, or improper installation.
  • Page 2: Installation Guidelines

    Installation Guidelines • Consult local codes for requirements and restrictions applicable to the area. FEBCO recommends at least 20 psi (138 kPa) for system supply pressure. Figure 1 Top View • Install the valve only in the orientation/flow direction shown. The air inlet operates in the vertical position.
  • Page 3: Field Testing Procedure

    Field Testing Procedure FEBCO recommends the use of the appropriate test method presented in the ASSE Series 5000 manual that is consistent with the local codes. Before starting the procedure, remove the freeze sensor mounting clip from the test cock and set it aside to avoid damage. After the procedure is finished, reattach the clip on either test cock.
  • Page 4: Service Procedure

    Service Procedure 4. Reassemble the device by reversing the preceding steps and The general service instructions apply to all sizes. (For visual aid using the following special instructions. information, see “Parts.”) a. Position the check assembly into the valve body. Position the spring Before starting the procedure, remove the freeze sensor mounting into the recessed area on the top side of the check assembly.
  • Page 5: Parts

    Parts Nut* Bolt* (Not shown, used for 11/2 to 2") Canopy O-ring* Bonnet 22 Ball Valve* (2) Spring Bonnet 20 Test Cock* (2) E-ring Assembly Washer 10 Stem Poppet 11 Rubber Disc Assembly 12 Poppet 13 Retainer 14 Spring Sizes ¾" to 1¼" shown in illustration Bonnet and bolt for sizes 11/2"...
  • Page 6: Troubleshooting

    Weak or broken spring Disassemble and replace spring Poppet broken due to thermal expansion Replace broken poppet (Refer to IS-F-765-Winterization at watts.com.) Poppet fails to open at 1.0 psig minimum Debris restricting free operation Disassemble and clean check valve surfaces...
  • Page 7 à pression. les conditions de gel ne causent des dommages au produit et/ou à la propriété. Watts n’est pas responsable de la défaillance des alertes due à ® des problèmes de connectivité, à des coupures de courant ou à une installation incorrecte.
  • Page 8: Directives D'installation

    Directives d’installation • Consultez les codes locaux pour les exigences et restrictions applicables à la région. FEBCO recommande que la pression d’alimentation du système soit d’au moins 20 psi (138 kPa). Figure 1 Vue du dessus • Installez la vanne uniquement dans l’orientation ou la direction de débit indiqué.
  • Page 9: Procédure De Contrôle Sur Le Terrain

    Procédure de contrôle sur le terrain FEBCO recommande l’utilisation de la méthode de test appropriée, présentée dans le manuel ASSE de la série 5000, qui correspond aux codes locaux. Avant de commencer la procédure, retirez la pince de montage du capteur de gel du robinet d’essai et mettez-la de côté pour éviter tout dommage.
  • Page 10: Procédure De Service

    Procédure de service 4. Remontez le dispositif en inversant les étapes précédentes et en Les instructions d’usage général s’appliquent à toutes les tailles. utilisant les instructions spéciales suivantes. (Pour des informations sur les aides visuelles, voir « Pièces ».) a. Positionnez l’ensemble de clapet dans le corps de vanne. Avant de commencer la procédure, retirez la pince de montage du Positionnez le ressort dans la zone encastrée sur le côté...
  • Page 11: Pièces

    Pièces Écrou* Boulon* (non illustré, utilisé pour 1 1/2 po [3,8 cm] à 2 po [5,1 cm]) Couvercle Joint torique* Chapeau 22 Robinet à bille* (2) Ressort 20 Robinet d’essai* (2) Anneau en E Ensemble Rondelle de chapeau 10 Tige 11 Disque en caoutchouc Ensemble 12 Clapet champignon...
  • Page 12: Dépannage

    ASSUMÉE, NOTAMMENT LES GARANTIES IMPLICITES DE QUALITÉ MARCHANDE ET D’APTITUDE À UN USAGE PARTICULIER, SERA LIMITÉE À UN AN À PARTIR DE LA DATE DE L’EXPÉDITION D’ORIGINE. É.-U. : Tél. : (800) 767-1234 • FEBCOonline.com Canada : Tél. : (888) 208-8927 • FEBCOonline.ca Amérique latine : Tél. : (52) 55-4122-0138 • FEBCOonline.com RP/IS-F-765 2409 1923078 © 2024 Watts...
  • Page 13 FZ no reemplaza la necesidad de cumplir con todas las instrucciones, códigos y reglamentos requeridos relacionados con la instalación, operación y mantenimiento del conjunto de PVB. Watts no es responsable de la falla de las alertas debido a problemas ®...
  • Page 14: Pautas De Instalación

    Pautas de instalación • Consulte los reglamentos locales para conocer los requisitos y restricciones correspondientes a su área. FEBCO recomienda un mínimo de 20 psi (138 kPa) para la presión de suministro del sistema. Figura 1 Vista superior • Instale la válvula solo en la orientación o dirección de flujo mostrada.
  • Page 15: Procedimiento De Pruebas De Campo

    Procedimiento de pruebas de campo. FEBCO recomienda el uso del método de prueba apropiado que se presenta en el manual ASSE serie 5000 que concuerda con los reglamentos locales. Antes de comenzar el procedimiento, retire el clip de montaje del sensor de congelación del puerto de prueba y póngalo a un lado para evitar daños.
  • Page 16: Procedimiento De Servicio

    Procedimiento de servicio 4. Vuelva a ensamblar el dispositivo invirtiendo los pasos anteriores Las instrucciones generales de servicio se aplican a todos los y siguiendo las instrucciones especiales que se indican a tamaños. (Para obtener información sobre ayuda visual, consulte continuación.
  • Page 17: Piezas

    Piezas Tuerca* Pernos* (No se muestra, se usa para 11/2 a 2" [3.81 cm a 5.08 cm]) Dosel Junta tórica* Tapa 22 Válvula de bola* (2) Resorte Anillo en E Conjunto 20 Puerto de prueba* (2) Arandela de la tapa 10 Vástago Conjunto de 11 Disco de goma la válvula...
  • Page 18: Solución De Problemas

    NO PUEDA SER RECHAZADA, INCLUIDAS LAS GARANTÍAS IMPLÍCITAS DE COMERCIABILIDAD E IDONEIDAD PARA UN PROPÓSITO PARTICULAR, TIENE UNA DURACIÓN LIMITADA A UN AÑO A PARTIR DE LA FECHA DE ENVÍO ORIGINAL. EE. UU.: Tel.: (800) 767-1234 • FEBCOonline.com Canadá: T: (888) 208-8927 • FEBCOonline.ca Latinoamérica: Tel.: (52) 55-4122-0138 • FEBCOonline.com RP/IS-F-765 2409 1923078 © 2024 Watts...

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