check valve maintenance manual

Wafer Check Valve Installation, Operation and Maintenance Manual 1. Introduction. The design of this type of check valve has good structures and appearance. The discs open under the

1) Check the flow arrow on the body before inserting the Check Rite valve between the flanges. 2) Pipeline flanges must be parallel and have the same pressure class rating as the valve. 3)

MAINTENANCE MANUAL. Drawing C-1239 Figures 221-D, 221-DS, 221-U and 221-US. Single-Increasing Lever & Weight Swing Check Valves.

B. Styles 59, 159, and 259 (Resilient Seated Check Valves) 1. Cold water services (125° F maximum, 32° F minimum) 2. Sizes 14" - 36" - 150 PSI maximum IV. Maintenance, Checking and Testing A. Swing check valves With the exception of issues caused by misuse and severe service of the valve, maintenance should be limited to the following:

CHECK VALVE RECOMMENDED STORAGE AND HANDLING. Whenever possible, Kennedy Valve check valves should be stored inside. However, when this.

LIFT CHECK & SWING CHECK VALVE. OPERATION/ MAINTENANCE MANUAL 2.1 These check valves can be installed in a pipeline to avoid backward flow. 2.2 MEDIUM.

Check the inner cavity, especially the seal surface to inspect if the seal surface is free from dirt and damage. screw on the arm axle of the swing check valve. verify that the valve meets the service requirements. upwards. 2 Valve opens or closes automatically due to flow pressure of the medium. 5.2 INSTALLATION, or inclined line.

Installation, Operation and Maintenance Manual. SERIES 35 - CHECK VALVE KF Series 35 Check Valves should not be used in vertical down flow installations 

Installation, Operation, and Maintenance Manual The flanged swing check valve (Figure 1& Figure 2) features a hinged stainless steel clapper with an 

Dismantling • Visual inspection and dimensional check • Cleaning – sand blasting etc. if necessary • Crack detection – spot check • Inspection of valve guard for further use. • Rework of sealing lips of valve seat. Lapping or machining depending on condition. For a long seat lifetime only machine as little as possible.

M&H Valve Company Large Diameter (14”-36”) Check Valve Operation and Maintenance Manual I. General Service by Product A. Style 59, 159, and 259 Check Valves 1. Bronze to