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True Union Ball Valves - PPL Construction

True Union Ball Valves - PPL Construction
3Pages

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True Union Ball Valves - PPL Construction - 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 70F 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 40F, 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 70F. 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. > 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. Flange bolts should be tight enough to slightly compress the gasket and make a good seal, without distorting or putting excessive stress on the flanges. Suitable washers should be used between the bolt head and flange and the nut and flange. Bolts should be tightened in alternating sequence. RECOMMENDED FLANGE BOLT TORQUE FLANGE BOLT TORQUE SIZE > DIA FT. LBS 1/2 1/2 10-15 3/4 1/2 10-15 1 1/2 10-15 1-1/4 1/2 10-15 1-1/2 1/2 10-15 2 5/8 15-25 NOTE: USE WELL LUBRICATED METAL BOLTS AND NUTS. USE SOFT RUBBER GASKETS. >

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True Union Ball Valves - PPL Construction - 2

word loosenӔ and a directional arrow. Direction of rotation may vary depending on date of manufacture. The Assembly nut should be installed on the valve hand tightӔ. Using a strap wrench only > the joint may be tightened 1/2 to 3/4 of a turn past hand tight. REPAIR: Follow the adjustment sequence and information above, but rotating the seal retainer completely in the loosenӔ direction and remove it from valve body. The o-rings and seals are now accessible for replacement using a sealӔ repair kit. Carefully remove the o-rings from their respective locations taking care not to scratch their...

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True Union Ball Valves - PPL Construction - 3

HANDLE (1) REQ. O-RING ONE (1) REQUIRED ON ASSEMBLY NUT (2) ALL VALVES. REQ. STEM (1) REQ. O-RING (2) REQ. END CONNECTOR (2) SEAT (2) REQ. REQ. BALL (1) REQ. SEAL RETAINER (1) REQ. BODY (1) REQ. O-RING (1) REQ. >

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True Union Ball Valves - PPL Construction 3Pages

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True Union Ball Valves - PPL Construction
3Pages