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Differential Pressure Gauge

Differential Pressure Gauge

Product catalog summary
Introduction
These instructions are for the installation of an Aluminum Differential Pressure (DP) Gauge on a filter vessel by Hayward Industrial Products. It is crucial to follow these guidelines to prevent injury and ensure proper functioning of the product.

Product Guarantee and Responsibility
Hayward guarantees its products against defects in material and workmanship. However, it does not assume responsibility for damages or injuries resulting from improper installation, misuse, or chemical incompatibility. Users should verify compatibility and suitability for their specific applications.

Operating Conditions
Before installation, consult Hayward literature for operating pressure and temperature limitations. The maximum fluid velocity should not exceed eight feet per second to avoid damage from the water hammer effect. Hayward products are designed for non-compressible liquids and should not be used with compressible fluids like compressed air or nitrogen.

Installation Precautions
Ensure systems are depressurized and drained before installation or maintenance. Consider temperature effects on piping systems to prevent mechanical loading on Hayward equipment. Avoid direct installation of metal pipes into plastic connections due to differential thermal expansion rates.

Installation Procedure for DP Gauge
  • Use a 1/2”-13 UNC plug tap to thread the body to a depth of 5/8”±1/8” in two places without penetrating the body cavity.
  • Install a 1/2”-13 UNC x 1 1/2” long set screw into each tapped hole to a maximum depth of 3/4”.
  • Place the bracket assembly over the set screws, ensuring the gauge is upright.
  • Secure with a flat washer, lock washer, and 1/2” nut on each set screw, tightening until the lock washer is flat.
  • Remove two 1/4” pipe plugs as indicated, and install elbows into the open 1/4” NPT body holes.
  • Connect plastic tubes from the elbows to the corresponding ports on the gauge.
  • Refill the vessel carefully and check for leaks.


Conclusion
Following these detailed instructions will ensure the safe and effective installation of the Aluminum DP Gauge on a filter vessel. Always adhere to safety precautions and consult Hayward literature for specific product limitations.
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Catalog excerpts

Differential Pressure Gauge-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. > REMOVE 1/4 PIPE PLUG ԓHIGH PRESSURE SIDE HIGH PRESSURE SIDE, ATTACH HOSE TO HIGH PRESSURE SIDE 1/4Ԕ NPT TAP TAP 1/2-13 X 5/8Ԕ DEEP INSTALL 1/2 SET SCREW REMOVE 1/4Ԕ PIPE PLUG LOWӔ PRESSURE SIDE LOW PRESSURE SIDE, ATTACH HOSE TO LOW PRESSURE SIDE 1/4 NPT TAP TAP 1/2Ԕ-13 X 5/8 DEEP. INSTALL 1/2Ԕ SET SCREW FLTDPISA REV C 8/18/99 ECR 819R >

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