Hayward HCV375 User manual

ISHCV375 Rev-A
Hayward Commercial
10101 Molecular Dr. Suite 200, Rockville, MD 20850
Phone: [phone]
www.hayward-commercial-pool.com
Commercial Filter
Valve
Instruction Manual
Model HCV375
For Filter Models HCF343T and HCF363T
SAVE THIS INSTRUCTION MANUAL

USE ONLY HAYWARDGENUINE REPLACEMENT PARTS
Page 2 of 16 Commercial Filter Valve Adapter Kit ISHCV375 Rev-A
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 ConnectionGluing 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

USE ONLY HAYWARDGENUINE REPLACEMENT PARTS
Page 3 of 16 Commercial Filter Valve Adapter Kit ISHCV375 Rev-A
1. IMPORTANT SAFETY INSTRUCTIONS
Before installing or servicing this equipment, turn power supply OFF to the pump.
WARNING – Read and follow all instructions in thisowner’s manual and ontheequipment. Failure to follow
instructions can cause severe injury and/or death.
WARNING – This product shouldbe installed and serviced only bya qualifiedprofessional.
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 climbon this product. Closely
supervise children at alltimes. Components suchas thefiltration system, pumps, and heaters mustbe positioned
to prevent children from using them asa meansof access to the pool.
WARNING – Pool and spa components have a finite life. All components should be inspected frequently
and replaced at least everyten 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 asuction outlet sump or suction outlet cover that is damaged,
broken, cracked, missing, or not securely attachedcan 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 outletcover which is damaged, broken,cracked, missing, or unsecured canresultin
evisceration/disembowelment.
Mechanical Entrapment - There is potential for jewelry, swimsuits, hair decorations, fingers, toes, orknuckles tobe
caught in anopening of a suction outlet cover resulting in mechanical entrapment.
Basic safety precautions should always befollowed, including the following: Failureto follow instructions mayresultin
injury.
This is the safety-alert symbol. When yousee this symbol on yourpump or in this manual, look for oneof the
following signal words, andbe alert to thepotential forpersonal injury.
WARNING warns about hazardsthat could causeserious 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 awareof actions that are unpredictable
and unsafe.
The NOTICE label indicates special instructions that are important but not related to hazards.

USE ONLY HAYWARDGENUINE REPLACEMENT PARTS
Page 4 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 bya person, a minimum of twofunctioning suction outlets per
drive must be installed. Suction outlets in the sameplane (i.e. floor or wall),must be installed aminimum
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 auser.
Dual suction fittings shall notbe locatedon seatingareas 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 outletcomponents
immediately.
In addition to two or more suction outlets per drive installed in accordance withlatest IAF (formerlyNSPI)
standards and CPSC guidelines,follow all national, state, and localcodes applicable.
Installation of a vacuum release or ventsystem, which relieves entrapping suction, isrecommended.
WARNING – Hazardous Pressure. Pool and spa water circulation systems operate under hazardous
pressure during start-up, normal operation, and after drive shut-off. Stand clearof circulationsystem 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 startingsystem drive, all systemvalves
must be set in aposition to allow system water toreturnback to thepool. Do notchange filtercontrol valveposition
while system drive isrunning. Before starting system drive, fully openfilter manual airrelief valve. Do notclose
filter manual air reliefvalve until a steady stream of water (not air or airand water mix) isdischarged fromthe 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/orproperty damage.
WARNING – Separation Hazard. Failure to follow safety and operation instructions could result in violent
separation of drive components. Strainer cover must beproperly secured to drive housing with strainer cover lock
ring. Before servicing pool and spa circulation system, all system and drive controls must be in offposition and filter
manual air relief valve must bein open position. Do notoperate pool and spacirculation system if a system
component is not assembledproperly, damaged, ormissing. Do not operate pool and spacirculation system unless
filter manual air relief valvebody is in locked position in filter upper body. All suction and discharge valvesMUST be
OPEN when starting the circulation system. Failure to do so could result in severe personal injury and/or property
damage.
WARNING – Never operate ortest 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.

USE ONLY HAYWARDGENUINE REPLACEMENT PARTS
Page 5 of 16 Commercial Filter Valve Adapter Kit ISHCV375 Rev-A
2. Installation
This valve was designed tobe 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 Qty. Description
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
2.2. Assembly
It is recommended to read through thisassembly 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.

USE ONLY HAYWARDGENUINE REPLACEMENT PARTS
Page 6 of 16 Commercial Filter Valve Adapter Kit ISHCV375 Rev-A
(Refer to Figure 2-1 and Figure 2-2)
2.2.1. Glue the two plugs into the correct valve ports as shown using ABS to ABS Cement. No
primer is needed on ABS parts.
2.2.2. Slide a Union Nut (thread toward union) onto the short pipe assembly from the 3”
Piping Kit HCV375KIT. Glue the nipple end into valve body port labeled “TOP” as
shown. Use P-70 Primer on pipe nipple only and ABS to PVC cement.
2.2.3. Glue the elbow assembly section from the Piping Kit HCV375KIT into the valvebody port
labeled “BOTTOM” as shown. Make sure the two pipe sections are aligned parallel
before gluing. Use P-70 Primer on pipe nipple only and ABS to PVC cement.
Figure 2-1

USE ONLY HAYWARDGENUINE REPLACEMENT PARTS
Page 7 of 16 Commercial Filter Valve Adapter Kit ISHCV375 Rev-A
Figure 2-2
(Refer to Figure 2-3 and Figure 2-4)
2.2.4. Assemble the 2 Union Threaded Adapter halves from the 3” Piping Kit HCV375KIT into
the filter body bulkhead fitting and tighten to Section 5 Standard Threaded
Connection Practices.
2.2.5. Test the alignment of the unions by holding the valve assembly union flange faces to the
filter tank union flange faces. These 2 union faces should come in contact flat and in-
line with each other.
2.2.6. Be sure that each o-ring is properly seated into the groove of each tank threaded
adapter union half. Assemble the valve assembly to the tank byholding the valve
assembly union faces to the filter tank union faces & tighten the two union nuts.
2.2.7. Continue other valve plumbing as necessary.

USE ONLY HAYWARDGENUINE REPLACEMENT PARTS
Page 8 of 16 Commercial Filter Valve Adapter Kit ISHCV375 Rev-A
Figure 2-3
Figure 2-4

USE ONLY HAYWARDGENUINE REPLACEMENT PARTS
Page 9 of 16 Commercial Filter Valve Adapter Kit ISHCV375 Rev-A
3. Valve Operation:
3.1.Functions of Valve Positions
VALVESETTING FLOW DIRECTION THROUGH VALVE
FILTER PUMP- TOP- THROUGH FILTER - BOTTOM - RETURN
For normal filtration and vacuuming pool through filter.
BACKWASH PUMP- BOTTOM - THROUGH FILTER - TOP - WASTE
For reversing flow for cleaning filter.
RINSE PUMP- TOP- THROUGH FILTER - BOTTOM - WASTE
For initial start-up cleaning, plus resetting filter bed after
backwashing.
WASTE PUMP - WASTE
For vacuuming directly to waste, lowering pool level/draining pool.
CLOSED 3.1.1. NO CIRCULATION PAST PUMP PORT
For shutting off all flow to filter and pool.
RECIRCULATE PUMP – RETURN
For bypassing filter, but circulating pool water. May be plumbed for
"off-system" pool water access. Ideal for Jet-Air®fittings
3.2. Important Information:
To prevent damage to the pump and filter and for proper operation of the system, clean
pump strainer and skimmer baskets regularly.
To prevent unnecessary strain on piping system and valve, always shut off pump before
switching Filter Control Valve positions.
3.3. Graph of Valve Head Loss

USE ONLY HAYWARDGENUINE REPLACEMENT PARTS
Page 10 of 16 Commercial Filter Valve Adapter Kit ISHCV375 Rev-A
4. Standard PVC Socket Connection Gluing Practices
Solvent cementing of socket end connections to pipe should be performed per ASTM specifications
D2855-96.
4.1. Cut the pipe square.
4.2. Chamfer and deburr the pipe.
4.3. Surfaces must be cleaned and free of dirt, moisture, oil and other foreign material.
4.4. Apply primer to the PVC elbow inside socket surface. Never allow the primer or cement to
contact the union connector o-ring sealing surfaces, as leaking may result. Use a scrubbing
motion. Repeated applications may be necessary to soften the surface of the socket.
4.5. Liberally apply primer to the male end of the pipe to the length of the socket depth.
4.6. Again apply to the socket.
4.7. Without delay, apply cement to the pipe while the surface is still wet with primer.
4.8. Next apply cement lightly, but uniformly to the inside of the socket.
4.9. Apply a second coat of cement to the pipe, and assemble the end connector to the pipe,
rotating the connection 1/4 turn in one direction as it is slipped to full depth on to the pipe.
4.10. The connector should be held in position for approx. 30 seconds to allow the connection to
“set”.
4.11. After assembly, wipe off excess cement.
4.12. Full set time is a minimum of 30minutes at 60°F to 100° F. Full cure time should be based on
the chart below.

USE ONLY HAYWARDGENUINE REPLACEMENT PARTS
Page 11 of 16 Commercial Filter Valve Adapter Kit ISHCV375 Rev-A
JOINT CURE SCHEDULE:
The cure schedules are suggested as guides. They are based on laboratory test data, and should not be
taken to be the recommendations of all cement manufacturers. Individual manufacturer’s
recommendations for their particular cement should be followed.
Temperature Range
During Cure Period (B)
°F(°C)
Test Pressures for Pipe
Sizes 1/2 to 1-1/4 In Test Pressures for Pipe Sizes 1-1/2 to 3 In Test Pressures for Pipe Sizes 4 to 5 In Test Pressures for Pipe Sizes 6 to 8 In
Up to 180 PSI
(1240 kPa) Below 370 PSI (2552 kPa) Up to 180 PSI (1240 kPa) Below 315 PSI (2170 kPa) Up to 180 PSI (1240 kPa) Below 315 PSI (2170 kPa) Up to 180 PSI (1240 kPa) Below 315 PSI (2170 kPa)
60 to 100 (15 to 40) 1 h 6 h 2 h 12 h 6 h 18 h 8 h 24 h
40 to 60 (5 to 15) 2 h 12 h 4 h 24 h 12 h 36 h 16 h 48 h
20 to 40 (-7 to 5) 6 h 36 h 12 h 72 h 36 h (A) 4 days (A) 3 days (A) 9 days (A)
10 to 20 (-15 to -7) 8 h 48 h 16 h 96 h 72 h (A) 8 days (A) 4 days (A) 12 days (A)
Extreme care should be exercised on all joints made where pipe, fittings or cement is below 10ºF (-15C).
A: It is important to note that at temperatures colder than 20ºF on sizes that exceed 3 in., testresults
indicate that many variables exist in the actual cure rate of the joint. The data expressed in these
categories represent only estimated averages. In some cases, cure will be achieved in less time, but
isolated test results indicate that even longer periods of cure may be required.
B: These cure schedules are based on laboratory test data obtained on Net Fit Joints (NET FIT=in a dryfit
the pipe bottoms snugly in the fitting socket without meeting interference).

USE ONLY HAYWARDGENUINE REPLACEMENT PARTS
Page 12 of 16 Commercial Filter Valve Adapter Kit ISHCV375 Rev-A
5. Standard Threaded Connection Practices
Threaded end connections should be manufactured to ASTM specifications D2464-99. F437-99 and
ANSI B2.1.
5.1. Wrap threads of pipe with Teflon tape of 3 to 3-1/2 mil thickness. The tape should be wrapped
in a clockwise direction starting at the first or second full thread. Overlap each wrap by, 1/2
the width of the tape. The wrap should be applied with sufficient tension to allow the threads
of a single wrapped area to show through without cutting the tape. The wrap should continue
for the full effective length of the thread. Pipe sizes 2” and greater will not benefit with more
than a second wrap, due to the greater thread depth.
5.2. To provide a leak proof joint, the pipe should be threaded intothe end connection “hand
tight”.
5.3. Using a strap wrench only (never use a stillson type wrench), tighten the joint an additional
1/2 to 1-1/2 turns past hand tight. Tightening beyond this point mayinduce excessive stress
that could cause failure.
6. Spare Parts
6.1. Spare parts available are as follows (refer to Figure 6-1):
Item # Part # Description
1 HCXV0375BA 3” VALVE INTERNALS
ASSEMBLY, COMPLETE
2 HCXV0375G OPERATION INSTRUCTION
LABEL
3 HCXV0375L LID O-RING

USE ONLY HAYWARDGENUINE REPLACEMENT PARTS
Page 13 of 16 Commercial Filter Valve Adapter Kit ISHCV375 Rev-A
Figure 6-1

USE ONLY HAYWARDGENUINE REPLACEMENT PARTS
Page 14 of 16 Commercial Filter Valve Adapter Kit ISHCV375 Rev-A
6.2 3” Valve Internals Assembly Kit Replacement Instructions:
1. Turn pump OFF.Close all valves; pump to valve (or pool to pump), filter to pool.
2. Open Air Relief valve, located on top of filter.
3. Turn multi-port valve to “WASTE” position. Allow 3-5 minutes for water to drain from the filter
tank.
4. From present (old) multi-port valve assembly, remove all the bolts and nuts on top of the
valve.
5. Remove the valve cover and internals assembly by the handle, out of the valve body. Clean
any debris left inside the valve flat sealing surfaces.
6. Replace valve cover and internals assembly with new kit. Make sure all the parts are clean.
7. “IMPORTANT”… Make sure that the “FILTER” position of the cover label is toward the filter
ports.
8. Replace all the bolts and nuts and tighten in a crisscross pattern.
9. Turn the valve handle to “FILTER” position.
10. Open all valves (from pump to valve and filter to pool)
11. Turn pump “ON”
12. Close Air Relief valve on top of filter, when a steady stream of water is being discharged.
7. Accessories
7.1. Accessory parts available are as follows (refer to Figure 6-1 on previous page):
Part # Description
HCV375KIT 3” VALVE PIPING KIT

USE ONLY HAYWARDGENUINE REPLACEMENT PARTS
Page 15 of 16 Commercial Filter Valve Adapter Kit ISHCV375 Rev-A
HAYWARD
®
LIMITED WARRANTY
To Buyer, asoriginalpurchaserof thisequipment, HaywardPool Products, 620DivisionStreet,Elizabeth, NewJersey,warrants
its productsfreefrom defects inmaterials and workmanship for a period ofONE (1) year from the date of purchase.
Parts whichfail or become defective during the warranty period, except as a result of freezing, negligence, improper
installation, use,or care, shallbe repaired orreplaced, atour option,without charge, within90days of the receipt of defective
product,barring unforeseendelays.
To obtain warranty replacements or repair, defective components or parts should be returned, transportation paid, to the place
of purchase, or to the nearest authorized Hayward service center. For further Hayward dealer or service center information,
contact Hayward customer service department. No returns may be made directly to the factory without the express written
authorization of Hayward Pool Products.
To originalpurchasersof this equipment, Hayward Pool Products warrants itsproducts to be freefromdefects inmaterials and
workmanship for aperiod of ONE (1) year from the date of purchase.
Filters which become defective during the warranty period, except as a result of freezing, negligence, improper installation,
use or care, shallbe repaired or replaced,at our option,without charge.
All other conditionsand terms of the standard warranty apply.
Hayward shall not be responsible for cartage,removaland/or reinstallation laboror any other suchcosts incurred in obtaining
warranty replacements.
The Hayward PoolProductswarrantydoes not apply to components manufactured by others. For such products, the warranty
established by the respective manufacturer will apply.
Some statesdo not allow alimitation on how long an implied warranty lasts, or the exclusion or limitation of incidentalor
consequentialdamages, so the above limitation or exclusionmay not apply to you.
This warrantygives you specific legal rights, and you may also have other rights, which vary from state to state.
Hayward Pool Products
620 Division Street
* Supersedes all previous publications. Elizabeth, NJ 07207
8. Warranty

USE ONLY HAYWARDGENUINE REPLACEMENT PARTS
Page 16 of 16 Commercial Filter Valve Adapter Kit ISHCV375 Rev-A
Please Print Clearly:
First Name____________________ Last Name____________________
Street Address_____________________________________________
City_______________________ State___________ Zip____________
Phone Number___________________ Purchase Date_______________
E-Mail Address_____________________________________________
Serial
Number
(10-17 digit number)
Model Number______________________________________________
Pool Capacity_______________(U.S. Gallons)
Please include me on all e-mail communications regarding Hayward Equipment or promotions.
Mail to: HaywardPool Products, 620 Division Street, Elizabeth, NJ 07207
Attn: WarrantyDept
Or REGISTER YOUR WARRANTY ON-LINE AT WWW.HAYWARDPOOL.COM
DETACH HERE: Fill out bottom portion completely and mail within 10 days of purchase/installation or register online.
----------------------------------------------------------------------------------------------------------------------------
Commercial Filter Valve Model HCV375 Warranty Card Registration
Years Pool has been in service
< 1 year 1-3 4-5 6-10 11-15 >15
Purchased from_____________________________
Builder Retailer Pool Service Internet/Catalog
Company Name_________________________________
Address_______________________________________
City____________________ State_____ Zip__________
Phone_________________________________________
Type of Pool:
Concrete/Gunite Vinyl Fiberglass
Other_____________________________
New Installation Replacement
Installation for:
In Ground Spa