TVS – 811 Series Trap Valve Station Installation, Operation and Maintenance Instructions

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Filed Under (TVS) by admin on 29-04-2012

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In a piston valve, the control of stem and seat leakage is obtained by tightness of the valve sealing rings to the body and valve plug. The bonnet compresses the valve sealing rings against the body and the valve plug. Flexible disc springs automatically assure a tight seal by exerting pressure on the valve sealing rings, keeping them compressed. Opening and Closing the TVS Isolation Valves The isolation valve begins to stop flow when the valve plug enters the lower valve sealing ring. When the isolation valve is completely closed, the valve plug is in contact with the full height of the valve sealing rings, ensuring the best possible seal. In fact, there is no advantage to be gained in torqueing the valve closed. Armstrong recommends that after closing the isolation valves completely, the handwheel should be turned back one half turn. This makes it easy to re-open the valve by avoiding metal to metal seizure. Troubleshooting – Isolation Valves A piston valve will retain its leak tightness for several years without maintenance. In severe service, such as rapid heating and cooling, some field maintenance may be required. Depending on the problem, these simple steps may help: ! ! ! ! ! Isolation Valve leaks, when the valve is closed . First, Check to make sure the valve is actually closed . Check to see if bonnet is seated on the body, if not, tighten the bonnet nuts until the bonnet seats. This recompresses the valve sealing rings against the body and the valve plug. If valve continues to leak, replace the isolation valve assembly

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KTM OM-2 Split Body Floating Ball Valves Installation and Maintenance Instructions

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Filed Under (KTM) by admin on 26-01-2012

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Remove the valve from the shipping package (box or pallet) with care taken to avoid any damage to the valve and actuator (plus accessories where applicable). •Before installation, remove the seal discs from the flange. Clean the inside of the valve using an air line that includes an appropriate air-filter. Ensure that there are no solid objects such as pieces of wood, plastic or packing materials within the valve or on the valve seat. •Confirm that the materials of construction listed on the valve nameplates are appropriate for the service intended for and are as specified. When in doubt contact KTM, or your local Tyco facility. •Define the preferred mounting orientation with respect to the system pressure. The arrow on the body helps to identify the upstream side (high pressure) and downstream side (low pressure). •Ensure that all stud bolts and nuts of the body joint are firmly fastened. Caution •Verify that the direction of the flow in the line corresponds to the arrow indicated on the valve body. Valves without the arrow are bi-directional. •See the Actuator User Manual for the actuator preparation. 2.2. Installation Instructions •Ball valves are normally installed in horizontal pipes with the stem facing up. However, there are no limitations regarding the pipe or stem orientation. •Unless otherwise recommended by KTM, the valve should be installed with the ball in the open position, to ensure that the seat rings are not damaged during installation. •Particular care should be taken for valves equipped with “fail-close” actuators. •For operating temperatures above 200°C (392°F), thermal insulation of the valve body is recommended to protect the actuator/accessories from heat beyond the recommended temperature range. •Handling and lifting of the valves during installation MUST be performed following the same criteria and instructions described in points 1.2. and 1.3

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KTM Starter Gear Maintenance Instructions

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Filed Under (KTM) by admin on 26-11-2010

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Checking the electric starter motor for wear -Check Bendix 1 for smooth operation and signs of wear. -Check the sprocket of the electric starter for wear and radial clearance. -Replace O-ring 2 of the electric starter. -Replace gasket 3 . -Check starter idler gear 4 for smooth operation and wear, check that the bearing bushings are seated firmly. Electric starter motor – checking for and adjusting play -Mount the electric starter and the starter idler gear. -Mount the tighten cover 5 . -Move starter idler gear 4 back and forth in the direction of rotation, the maximum play may not exceed half the width of a tooth. -If play is larger, cover 5 must be removed and as many shims 6 with a thickness of 0.10 mm as necessary must be added to eliminate all play. Then remove one shim again. -Check the play again; the maximum play may not exceed more than half of the width of a tooth. 1 2 3 4 5 4 5 6

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