check valve maintenance manual

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This manual has been prepared to provide the end user with general guidelines in the installation, operation and routine maintenance of VITAS valves. The instructions contained within this manual apply to all VITAS bolted bonnet & pressure seal valves unless otherwise stated.

This manual contains maintenance instructions together with pertinent illustrations for servicing corrosion resistant steel alloy, manually operated gate, globe, and swing check valves.

3. Valve Does Not Open: Open top fl ow control valve (6) fully counterclockwise. Check pressure differential across disc; upstream pressure must be greater than downstream pressure. Verify that downstream shutoff valve is open and there is no line blockage. Lower pressure on air tank (pressure should be 20% of water system pressure). Pressur

This manual has been prepared to assist you with the installation, operation and maintenance of the valve to the maximum efficiency. For ease of reference, it 

The valve identification plate is positioned, as in the picture, on the handwheel top side (in gate and globe valves) and on the cover top side (in check and piston/ball and swing). The valve's class (rating), the minimum and maximum working temperatures and the maximum working pressure must be check before installation. 3.2) Referring on the valve

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.

Gate Valves: Used in the fully open or fully closed position for on-off service. Globe Valves: Used for throttling control as well as on-off service. Self-Actuated Check Valves: Used to prevent backflow (fluid flow reversal). With proper care and regular maintenance, users can expect long life and excellent performance

Secure the valve in an upright position by clamping the valve body into a vise or a table with a union connection. 2. Use an impact with ¾” socket or a 3/4" Allen Wrench with 12" leg and

manual provides information for inspection and repairs of your DFT check valves should the need arise. No special tools are needed. Check Valve Assistance.

16/04/  · perform liquid penetrant testing (LPT) of the existing seating surface, machine-remove the existing alloy 21 hardfacing, perform LPT of the base metal (valve body) perform base metal repairs if needed, install new alloy 21 hardfacing, machine a new seating surface to OEM specifications, perform liquid penetrant testing of the new seating surface,

2.4 The valve after the long term storage, should be cleaned and tested prior to installation make. Page 3. WEIDOULI VALVES CO.,LTD. Check Valves Manual. NO.20, 

MAINTENANCE MANUAL. DUAL PLATE CHECK VALVE. DOC NO. CAM-TS-0042. REV. NO. 00. DATE. 15-02-2012. PAGE NO 1 OF 8. PREPARED BY : D.K. CHECKED BY : K.M.P.

Operation and Maintenance Manual. I. General Service by Product. A. Style 59, 159, and 259 Check Valves. 1. Bronze to bronze seating is not available in 

These instructions provide installation, operation and maintenance information for Cla-Val 580 & 581. Series Silent Check Valves. Safety Messages. All safety 

So is a valve clearance check at 1000kms a waste of $250 and just wait till 20,000kms; or is it a worthy investment to have it done at 1000kms? Adventure Rider. dhardesthard. 1,408 83. Post Jun 19, 2 2014-06-19T02:06. I would follow the manual and have the first service done at 1000 KMS. Is the $250 charge for the first service or

RDOIM 12/12. Operation and Maintenance Manual. RD-Series™. Check Valve. Henry Pratt Company. 401 S. Highland Avenue. Aurora, IL 60506. Phone: (630) 844-4000.

OPERATION AND MAINTENANCE MANUAL. TECHNO CHECK VALVES All Techno check valve assemblies are treated with a locking solution during assembly and no loose.

6. PARTS DIAGRAM. 6.1. RM Standard. 6.2. RM with Dashpot. INSTALLATION, OPERATION & MAINTENANCE MANUAL. RM Tilting Disc Check Valve 

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:

UNITED 7700 Swing Check Valves may be installed in horizontal pipe-work and vertical pipe-work if the flow is in an upwards direction.

Flanged or Wafer Style Valve. Gaskets may be oiled, greased, or left dry as preferred. Gaskets are not supplied with Valves. MAINTENANCE Maintenance of a Techno check Valve is seldom required. Repair or replacement of internal assembly is straight forward, requiring no special skills or tools. Following are a few precautions. 1.

Flomatic manuals for all our valves. Get instructions on installing, operating and maintaining Flomatic control valves, butterfly valves, check valves and 

Carefully unpack the valve and check for identification plates or tags etc. It is recommended to install Gate and Globe valves with stem vertical up in longitudinal pipe lines. For other orientations of stem, refer to L&T valves. The performance of the valve will be better if the flow is smooth.

Installation, Operation and Maintenance Instructions. Installation. 1). Check valves must be oriented for flow and gravity effect.

Manual for wafer type spring check valve This manual is provided to ensure proper installation, operation, and maintenance for the check valves.