Armstrong TVS 6000UD Manuale di installazione e funzionamento - Pagina 4
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Opening and Closing of the Bleed Valves
The role of the bleed valves in the TVS 6000UD is to allow safe and quick replacement of the connected steam trap. When the 2 isolation
valves are closed, if there is any leakage from the isolation points it will be visible and divert to the atmosphere through the opened bleed
valves, i.e. upstream (A-A') or downstream (G-G') isolating valves.
This allows any leaks to be visualized and any potentially dangerous working conditions avoided during maintenance.
The 2 bleed valves will be opened and closed with a flat wrench (13 mm) with a torque of 55-68 N-m.
Strainer Blowdown Valve and
Depressurization of the TVS 6000UD
The TVS 6000UD is supplied with a built-in strainer designed to protect more sensitive steam traps against dirt normally present in
steam systems. The strainer is fitted with a blowdown valve (D) used to clean the screen on a regular basis. This blowdown valve can be
used at start-up to eliminate the larger amount of condensate generated into the atmosphere.
BURN HAZARD!
occur to personnel. During this operation, the downstream isolation (G-G') is normally closed. The same blowdown valve is
also used as a depressurizing valve when needed (during the replacement procedure of the steam trap). In this case, both
isolation valves (A-A') and (G-G') are to be closed and bleed valves (B and H) are to be open to atmosphere.
Testing the Operation of the Steam Trap
Fitted onto the TVS 6000UD
• Keep the upstream isolating valve (A-A') open
• Close the downstream isolation valve (G-G')
• Open test valve (F). Its location is indicated on the name plate
• Observe the steam trap operation at test port
BURN HAZARD!
occur to personnel.
• Re-open the isolation valve (G-G') and close the test valve (F) with a flat wrench (13 mm) with a torque of 55-68 N-m.
Designs, materials, weights and performance ratings are approximate and subject to change without notice. Visit armstronginternational.com for up-to-date information.
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Hot condensate and flash steam will be discharged from the test port. Use caution as burns could
Hot condensate and flash steam will be discharged from the test port. Use caution as burns could
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