Hayward HCV375 Instruction Manual
ISHCV375 Rev-A
Commercial Filter
Valve
Instruction Manual
Model HCV375
For Filter Models HCF343T and HCF363T
SAVE THIS INSTRUCTION MANUAL
Hayward Commercial
10101 Molecular Dr. Suite 200, Rockville, MD 20850
Phone: 1-800-657-2287
www.hayward-commercial-pool.com
Table of Contents
1. IMPORTANT SAFETY INSTRUCTIONS…………………………………………………PAGE 3
2. Installation……………………………………………………………………………………………..5
2.1. Materials Needed……………………………………………………………………………………5
2.2. Assembly………………………………………………………………………………………………..5
3. Valve Operations…………………………………………………………………………………….9
3.1. Functions of Valve Positions……………………………………………………………………9
3.2. Important Information…………………………………………………………………………….9
3.3. Graph of Valve Head Loss……………………………………………………………………….9
4. Standard PVC Socket Connection Gluing Practice……………………………………10
5. Standard Threaded Connection Practices……………………………………………….12
6. Spare Parts…………………………………………………………………………………………….12
6.1. Spare Parts Chart……………………………………………………………………………………12
6.2. 3” Valve Internals Assembly Kit Replacement Instructions………………………14
7. Accessories…………………………………………………………………………………………...14
8. Warranty ……………………………………………………………………………………………….15
9. Product Registration……………………………………………………………………………….16
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Page 2 of 16 Commercial Filter Valve Adapter Kit ISHCV375 Rev-A
Basic safety precautions should always be followed, including the following: Failure to follow instructions may result in
1. IMPORTANT SAFETY INSTRUCTIONS
Before installing or servicing this equipment, turn power supply OFF to the pump.
injury.
This is the safety-alert symbol. When you see this symbol on your pump or in this manual, look for one of the
following signal words, and be alert to the potential for personal injury.
WARNING warns about hazards that could cause serious personal injury, death or major property damage
and if ignored presents a potential hazard.
CAUTION warns about hazards that will or can cause minor or moderate personal injury and/or property
damage and if ignored presents a potential hazard. It can also make consumers aware of actions that are unpredictable
and unsafe.
The NOTICE label indicates special instructions that are important but not related to hazards.
WARNING – Read and follow all instructions in this owner’s manual and on the equipment. Failure to follow
instructions can cause severe injury and/or death.
WARNING – This product should be installed and serviced only by a qualified professional.
Use of non-Hayward replacement parts voids warranty.
ATTENTION INSTALLER - THIS MANUAL CONTAINS IMPORTANT INFORMATION ABOUT THE INSTALLATION,
OPERATION, AND SAFE USE OF THIS VARIABLE SPEED DRIVE THAT MUST BE FURNISHED TO THE END USER OF
THIS PRODUCT. FAILURE TO READ AND FOLLOW ALL INSTRUCTIONS COULD RESULT IN SERIOUS INJURY.
WARNING – To reduce risk of injury, do not permit children to use or climb on this product. Closely
supervise children at all times. Components such as the filtration system, pumps, and heaters must be positioned
to prevent children from using them as a means of access to the pool.
WARNING – Pool and spa components have a finite life. All components should be inspected frequently
and replaced at least every ten years, or if found to be damaged, broken, cracked, missing, or not securely attached.
WARNING – Suction Entrapment Hazard.
Suction in suction outlets and/or suction outlet covers, which are damaged, broken, cracked, missing, or unsecured
cause severe injury and/or death due to the following entrapment hazards (symbols complements of APSP):
Hair Entrapment - Hair can become entangled in suction outlet cover.
Limb Entrapment - A limb inserted into an opening of a suction outlet sump or suction outlet cover that is damaged,
broken, cracked, missing, or not securely attached can result in a mechanical bind or swelling of the limb.
Body Suction Entrapment - A differential pressure applied to a large portion of the body or limbs can result in an
entrapment.
Evisceration/ Disembowelment - A negative pressure applied directly to the intestines through an unprotected
suction outlet sump or suction outlet cover which is damaged, broken, cracked, missing, or unsecured can result in
evisceration/disembowelment.
Mechanical Entrapment - There is potential for jewelry, swimsuits, hair decorations, fingers, toes, or knuckles to be
caught in an opening of a suction outlet cover resulting in mechanical entrapment.
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Page 3 of 16 Commercial Filter Valve Adapter Kit ISHCV375 Rev-A
WARNING – To Reduce the risk of Entrapment Hazards:
When outlets are small enough to be blocked by a person, a minimum of two functioning suction outlets per
drive must be installed. Suction outlets in the same plane (i.e. floor or wall), must be installed a minimum
of three feet (3’) [0.91 meter] apart, as measured from near point to near point.
Dual suction fittings shall be placed in such locations and distances to avoid “dual blockage” by a user.
Dual suction fittings shall not be located on seating areas or on the backrest for such seating areas.
The maximum system flow rate shall not exceed the values shown in the “Pipe Sizing Chart” found below.
Never use pool or spa if any suction outlet component is damaged, broken, cracked, missing, or not securely
attached.
Replace damaged, broken, cracked, missing, or not securely attached suction outlet components
immediately.
In addition to two or more suction outlets per drive installed in accordance with latest IAF (formerly NSPI)
standards and CPSC guidelines, follow all national, state, and local codes applicable.
Installation of a vacuum release or vent system, which relieves entrapping suction, is recommended.
WARNING – Hazardous Pressure. Pool and spa water circulation systems operate under hazardous
pressure during start-up, normal operation, and after drive shut-off. Stand clear of circulation system equipment
during drive start-up. Failure to follow safety and operation instructions could result in violent separation of the
drive housing and cover due to pressure in the system, which could cause property damage, severe personal injury,
or death. Before servicing pool and spa water circulation system, all system and drive controls must be in off
position and filter manual air relief valve must be in open position. Before starting system drive, all system valves
must be set in a position to allow system water to return back to the pool. Do not change filter control valve position
while system drive is running. Before starting system drive, fully open filter manual air relief valve. Do not close
filter manual air relief valve until a steady stream of water (not air or air and water mix) is discharged from the valve.
All suction and discharge valves MUST be OPEN when starting the circulation system. Failure to do so could result in
severe personal injury and/or property damage.
WARNING – Separation Hazard. Failure to follow safety and operation instructions could result in violent
separation of drive components. Strainer cover must be properly secured to drive housing with strainer cover lock
ring. Before servicing pool and spa circulation system, all system and drive controls must be in off position and filter
manual air relief valve must be in open position. Do not operate pool and spa circulation system if a system
component is not assembled properly, damaged, or missing. Do not operate pool and spa circulation system unless
filter manual air relief valve body is in locked position in filter upper body. All suction and discharge valves MUST be
OPEN when starting the circulation system. Failure to do so could result in severe personal injury and/or property
damage.
WARNING – Never operate or test the circulation system at more than 50 PSI maximum.
WARNING – Failure to install according to defined instructions may result in severe personal injury or death.
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Page 4 of 16 Commercial Filter Valve Adapter Kit ISHCV375 Rev-A
2. Installation
This valve was designed to be used with the following Hayward Pool Products Sand Filter models
HCF343T and HCF363T. This Filter must be purchased separately. A Hayward 3” piping kit HCV375KIT
may be purchased separately to connect this valve to the Sand Filter.
2.1. Materials Needed
To properly assemble this valve to the sand filter using the 3” piping kit HCV375KIT, some gluing
supplies will be required. See Table 1 below for a list of supplies.
Table 1
Item
1 as needed Plumbers Teflon tape (or equivalent)
2 as needed ABS to PVC Transition Cement
3 as needed ABS to ABS Cement
4 as needed P-70 Primer for PVC Pipe Nipples and Fittings
Qty. Description
2.2. Assembly
It is recommended to read through this assembly section first and dry fit parts together first before
gluing. Note: For all final pipe connections, please refer to sections 4. Standard PVC Socket
Connection Gluing Practices or 5. Standard Threaded Connection Practices, respectfully.
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Page 5 of 16 Commercial Filter Valve Adapter Kit ISHCV375 Rev-A
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