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Y Check Valves

Product catalog summary

Introduction: This document provides installation, operation, and maintenance instructions for Hayward Y-Check Valves. It emphasizes the importance of following these guidelines to prevent injury and ensure proper functioning.

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, recommending a maximum fluid velocity of eight feet per second to avoid damage from water hammer effects. It also advises against using Hayward products with compressible fluids.

Installation Guidelines: Systems should be depressurized and drained before installation or maintenance. Consideration of temperature effects on piping systems is crucial to prevent mechanical loading on equipment. Caution is advised when using PVC and CPVC products below 40°F due to brittleness.

Connection Types:

Socket Connection: Follow ASTM specifications for solvent cementing. Ensure surfaces are clean and free of contaminants. Apply primer and cement as instructed, allowing adequate set and cure times based on temperature.
Threaded Connection: Use Teflon tape on threads, wrapping in a clockwise direction. Tighten joints using a strap wrench to avoid excessive stress.
Flanged Connection: Tighten flange bolts to compress the gasket without distorting flanges. Use lubricated metal bolts and soft rubber gaskets, tightening in an alternating sequence.

Installation Recommendations: Install check valves at least 10 pipe diameters from a pump and 5 diameters from an elbow to minimize velocity effects.

Repair Instructions: Ensure the system is depressurized and drained before repair. Remove and inspect components for wear, replace o-rings, and reassemble using non-petroleum lubricants.

Conclusion: Adhering to these guidelines ensures the safe and efficient operation of Hayward Y-Check Valves.

Catalog excerpts

FLANGED CONNECTION: 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. USE WELL LUBRICATED METAL BOLTS AND NUTS. USE SOFT RUBBER GASKETS. FLANGE BOLT TORQUE FLANGE BOLT TORQUE SIZE DIA. FT. LBS. SIZE DIA. FT. LBS. 1/2 1/2 10-15 2 5/8 15-25 3/4 1./2 10-15 2-1/2 5/8 20-25 1 1/2 10-15 3 5/8 20-25 1-1/4 1/2 10-15 4 5/8 20-25...

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Y Check Valves

Y Check Valves

Catalog excerpts

All Hayward Industries, Inc. catalogs and technical brochures