Hayward PBV, RPV Installation, Operation And Maintenance Instructions

Hayward Flow Control www.haywardflowcontrol.com 1-888-429-4635

PBVRPVIOM Rev A 9/2015

Page 1 of 20

HAYWARD FLOW CONTROL

Series PBV Back Pressure Valve and

Series RP V Pressure Relief Valve

INSTALLATION, OPERATION, AND MAINTENANCE

INSTRUCTIONS

Hayward Flow Control www.haywardflowcontrol.com 1-888-429-4635

PBVRPVIOM Rev A 9/2015

Page 2 of 20

Hayward Flow Control www.haywardflowcontrol.com 1-888-429-4635

PBVRPVIOM Rev A 9/2015

Page 3 of 20

TABLE OF CONTENTS

Safety Warnings
Safety Precautions
Introduction

Description
Installation

Unpacking

Installation

Operation
Start-up

Adjusting the Set Pressure

Maintenance
Routine Maintenance

Parts Detail

Spare Parts

Specifications
Dimensions

Limited Warranty

Hayward Flow Control www.haywardflowcontrol.com 1-888-429-4635

PBVRPVIOM Rev A 9/2015

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SAFETY WARNINGS

PLEASE READ THE FOLLOWING INFORMATION PRIOR TO INSTALLING AND USING

HAYWARD SERIES PBV BACK PRESSURE VALVE AND SERIES RPV PRESSURE

RELIEF VALVES. FAILURE TO FOLLOW THESE INSTRUCTIONS MAY RESULT IN

PRODUCT DAMAGE, PROPERTY DAMAGE, PERSONAL INJURY, OR EVEN DEATH.

1. Hayward Flow Control (Hayward), a division of Hayward Industries, guarantees its
products against defective material and workmanship only. Hayward assumes no
responsibility for property damage or personal injury resulting from improper
installation, misapplication, or abuse of any product.

2. Hayward assumes no responsibility for property damage or personal injury resulting
from chemical incompatibility between its products and the process fluids to which they
are exposed. Determining whether a particular PVC, CPVC, PP or PVDF product is
suitable for an application is the responsibility of the user. Chemical compatibility
charts provided in Hayward literature are based on ambient temperatures of 70°F and
are for reference only.

3. Hayward products are designed for use with non-compressible liquids.

4. The maximum recommended fluid velocity through any Hayward product is eight feet
per second (8 ft/s). Higher fluid velocity can result in damage due to the water hammer
effect.

5. Piping systems must be designed and supported to prevent excess mechanical loading
on Hayward products due to system misalignment, weight, shock, vibration, and the
effects of thermal expansion and contraction.

6. The effect of temperature on plastic piping systems must be considered when the
systems are initially designed. The pressure rating of plastic systems must be reduced
with increasing temperature. Maximum operating pressure is dependent upon material
selection as well as operating temperature. Before installing any Hayward product,
consult Hayward product literature for pressure vs. temperature curves to determine
any operating pressure or temperature limitations.

WARNING
Hayward PVC and CPVC products should NEVER be used or tested
with compressible fluids such as compressed air or nitrogen. Use of

PVC and CPVC products in compressible fluid applications may

result in product damage, property damage, personal injury, or even
death.

WARNING
The Series PBV and RPV is intended for use in liquid service only.
Do not attempt to use this valve for controlling air or gases. Use of
this product in air or gas service may result in product damage,
property damage, personal injury, or even death.

Hayward Flow Control www.haywardflowcontrol.com 1-888-429-4635

PBVRPVIOM Rev A 9/2015

Page 5 of 20

7. PVC and CPVC plastic products become brittle below 40°F. Use caution in their
installation and operation below this temperature.

8. Due to differential thermal expansion rates between metal and plastic, transmittal of
pipe vibration and pipe loading forces, DIRECT INSTALLATION OF PLASTIC
VALVES INTO METAL PIPING SYSTEMS IS NOT RECOMMENDED. Wherever
installation of plastic valves into metal piping systems is necessary, it is recommended
that at least 10 pipe diameters in length of plastic pipe be installed upstream and
downstream of the plastic valve to compensate for the factors mentioned above.

9. Published operating requirements are based on testing of new valves using clean
water at 70°F. Valve performance is affected by many factors including fluid chemistry,
viscosity, specific gravity, flow rate, and temperature. These should be considered
when sizing Hayward products.

10. Systems should always be depressurized and drained prior to installing or maintaining
any Hayward product.

11. Always follow your site and or company procedures for any safety training and or site
specific precautions or warnings in addition to those in this document.

WARNING
Hayward PVC and CPVC products should not be used in services with
operating temperature below 34°F.

WARNING
Failure to depressurize and drain system prior to installing or

maintaining valve may result in product damage, property damage,
personal injury, or even death.

Hayward Flow Control www.haywardflowcontrol.com 1-888-429-4635

PBVRPVIOM Rev A 9/2015

Page 6 of 20

SAFETY PRECAUTIONS

Always follow the safety instruction below:

 Wear protective clothing and glasses when working

with or near chemicals.

 Refer to the MSDS for all chemicals used.
 Use only Genuine Hayward parts. Use of other parts

may result in damage to equipment or injury and
invalidate warranty.

 Flush all components that are in contact with

chemicals prior to servicing.

 Secure all chemicals and equipment making them

inaccessible to children and pets.

 Dispose all chemicals and waste according to all

local, state and federal regulations.

 Stop the flow of chemicals through the system prior

to working on the valve.

 Do Not exceed the maximum operating pressure.