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Three Way True Union Valves

Three Way True Union Valves

Three Way True Union Valves

Product catalog summary
Introduction: This document provides installation, operation, and maintenance instructions for the Hayward True Union Three Way Ball Valve. It emphasizes the importance of following these guidelines to prevent injury and ensure proper functionality.
Guarantee and Responsibility: Hayward guarantees its products against defects in material and workmanship but does not assume responsibility for damages or injuries due to improper installation, misuse, or chemical incompatibility. Users should verify compatibility and suitability for their specific applications.
Specifications: The document outlines the operating pressure and temperature limitations, emphasizing that the maximum fluid velocity should not exceed eight feet per second to avoid damage from the water hammer effect. It also notes that Hayward products are designed for non-compressible liquids and should not be used with compressible fluids.
Installation Guidelines: Systems must be depressurized and drained before installation or maintenance. Consideration of temperature effects on piping systems is crucial to prevent mechanical loading on equipment. Special caution is advised when using PVC and CPVC products below 40 ºF due to brittleness.
Connection Types:
  • Socket Connection: Follow ASTM specifications for solvent cementing. Ensure surfaces are clean and free of contaminants. Detailed steps for applying primer and cement are provided, along with a joint cure schedule based on temperature and pressure.
  • Threaded Connection: Use Teflon tape for sealing, applied with specific tension and direction. Tighten joints using a strap wrench to avoid excessive stress.
  • Flanged Connection: Flange bolts should be tightened to compress the gasket without distorting the flanges. Recommended torque values are provided for different sizes.
Adjustment and Repair: Extreme caution is advised during adjustments. The document provides a sequence for adjusting and repairing the valve, including accessing and replacing o-rings and seals.
Operation: The valve allows flow in or out through one side port and down through the bottom port, with the capability to block both side ports simultaneously. Recommended torque values for valve stem rotation are provided.
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Catalog excerpts

Three Way True Union Valves-1

1. Hayward guarantees its products against defective material and workmanship only. Hayward assumes no responsibility for damage or injuries resulting from improper installation, misapplication, or abuse of any product. 2. Hayward assumes no responsibility for damage or injury resulting from chemical incompatibility between its products and the process fluids to which they are subjected. Compatibility charts provided in Hayward literature are based on ambient temperatures of 70 F and are for reference only. Customer should always test to determine application suitability. 3. Consult Hayward literature to determine operating pressure and temperature limitations before installing any Hayward product. Note that the maximum recommended fluid velocity through any Hayward product is eight feet per second. Higher flow rates can result in possible damage due to the water hammer effect. Also note that maximum operating pressure is dependent upon material selection as well as operating temperature. 4. Hayward products are designed primarily for use with non-compressible liquids. They should NEVER be used or tested with compressible fluids such as compressed air or nitrogen. 5. Systems should always be depressurized and drained prior to installing or maintaining Hayward products. 6. Temperature effect on piping systems should always be considered when the systems are initially designed. Piping systems must be designed and supported to prevent excess mechanical loading on Hayward equipment due to system misalignment, weight, shock, vibration, and the effects of thermal expansion and contraction. 7. Because PVC and CPVC plastic products become brittle below 40 ںF, Hayward recommends caution in their installation and use below this temperature. 8. Published operating torque requirements are based upon testing of new valves using clean water at 70 F. Valve torque is affected by many factors including fluid chemistry, viscosity, flow rate, and temperature. These should be considered when sizing electric or pneumatic actuators. 9. Due to differential thermal expansion rates between metal and plastic, transmittal of pipe vibration, and pipe loading forces DIRECT INSTALLATION OF METAL PIPE INTO PLASTIC CONNECTIONS IS NOT RECOMMENDED. Wherever installation of plastic valves into metal piping systems is necessary, it is recommended that at least 10 pipe diameter in length of plastic pipe be installed upstream and downstream of the plastic valve to compensate for the factors mentioned above. > Socket end connections are manufactured to ASTM D2467-94. Solvent cementing of socket end connections to pipe should be performed per ASTM specifications D2855-87. Cut pipe square. Chamfer and deburr pipe. Surfaces must be cleaned and free of dirt, moisture, oil and other foreign material. Remove assembly nuts and end connectors from valve body. Slide assembly nuts, with threads facing valve, onto pipe to which the end connector is to be cemented. Apply primer to inside socket surface of end connector. Never allow primer or cement to contact valve ball or end connector o-ring sealing surfaces, as leaking may result. Use a scrubbing motion. Repeat applications may be necessary to soften the surface of the socket. Next, liberally apply primer to the male end of the pipe to the length of the socket depth. Again apply to the socket, without delay apply cement to the pipe while the surface is still wet with primer. Next apply cement lightly, but uniformly to the inside of the socket. Apply a second coat of cement to the pipe, and assemble the end connector to the pipe, rotating the end connector 1/4 turn in one direction as it is slipped to full depth on to the pipe. The end connector should be held in position for approx. 30 seconds to allow the connection to ړset. After assembly wipe off excess cement. Full set time is a minimum of 30 minutes at 60 to 100 ԺF. Full cure time should be based on the chart below. > 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 manufacturers recommendations for their particular cement should be followed. Test Pressures for Pipe Sizes ҽ to 1-1/4Ԕ Test Pressures for Pipe Sizes 1-1/2 to 3Ԕ Test Pressures for Pipe Sizes 4 & 5Ԕ Test Pressures for Pipe Sizes 6 to 8Ԕ > Temperature Range During Cure Period(B) F( ں C) Up to 180 PSI (1240 kPa) Above 180 to 370 PSI (1240 to 2550 kPa) Up to 180 PSI (1240 kPa) Above 180 to 315 PSI (1240 to 2172 kPa) Up to 180 PSI (1240 kPa) Above 180 to 315 PSI (1240 to 2172 kPa) Up to 180 PSI (1240 kPa) Above 180 to 315 PSI (1240 to 2172 kPa) > 60 to 100 (15 to 40) 1 hour 6 hours 2 hours 12 hours 6 hours 18 hours 8 hours 1 day 40 to 60 ( 5 to 15) 2 hours 12 hours 4 hours 1 day 12 hours 36 hours 16 hours 4 days 20 to 40 (-7 to 5) 6 hours 36 hours 12 hours 3 days 36 hours (A) 4 days (A) 3 days (A) 9 days (A) 10 to 20 (-15 to 7) 8 hours 2 days 16 hours 4 days 3 days (A) 8 days (A) 4 days (A) 12 days (A) Colder than 10 (-15) Extreme care should be exercised on all joints made where pipe, fittings or cement is below 10 F. > A: It is important to note that at temperatures colder than 20 ں F on sizes that exceed 3 in., test results 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 dry fit the pipe bottoms snugly in the fitting socket without meeting interference). Threaded end connections are manufactured to ASTM specifications D2464-88. F437-88 and ANSI B2.1. 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. To provide a leak proof joint, the pipe should be threaded into the end connection ԓhand tight. 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 may induce excessive stress that could cause failure. size="-2">

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