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KOSO HAMMEL DAHL

253 Pleasant Street

W. Bridgewater MA 02379

Telephone: 774.517.5300

Fax: 774.517.5230

Disposal of Product or Parts

Dispose of the product or its parts, consigning it to an industrial waste treatment services authorized by the

governor of prefectural governments, or to a local municipal entity undertaking the disposal, according to the

“Waste Disposal and Public Cleansing Law.”

Maintenance Parts

Maintenance parts or expendables for replacing worn or damaged parts are available by ordering to any local

distributors of our representatives listed below.

Содержание D52B

Страница 1: ...when working with the media involved 4 Depressurize the line and valves as follows a Open the valve and drain the line b Close and open the valve to relieve any residual pressure that may be in the va...

Страница 2: ...10 Actuator without manual operation unit 10 Manual override 11 Principle of Operation 12 Direct operation 12 Reverse operation 12 Daily Inspection and Periodic Inspection 13 Daily inspection 13 Peri...

Страница 3: ...tuator opens the valve when increasing air pressure is applied to the lower diaphragm chamber Mounted on push stem to open valve body assemblies the reverse actuator closes the valve when increasing a...

Страница 4: ...rve these instructions may allow the hoisted control valve to drop and injure or may cause damage to the actuator After unpacking observe the following precaution to maintain performance of the actuat...

Страница 5: ...completed and the piping or wiring work is started Be careful not to apply a strong impact to it by dropping or hitting while connecting to the process piping Otherwise it might cause failure or requi...

Страница 6: ...or lifting equipment such as a chain block and hook Fig 3 Installation position As a rule the position of the installed control valve should be vertical as illustrated in Fig 3 If your control valve i...

Страница 7: ...rument air supply piping and instrument wiring Do not use a seal tape for the instrument air supply piping port to an accessory because tape chips may clog in the piping causing malfunction of accesso...

Страница 8: ...the instructions in the operation manual for each device for adjustment Use a dial gauge or a stroke detector equivalent to it to detect a stroke for adjustment of the positioner 2 Adjustment of actu...

Страница 9: ...in the previous section 1 for adjustment and checking Operation Manual operation This unit is an optional accessory used to open close the valve unit when the air pressure for operation is not availab...

Страница 10: ...nd the other is the reverse action it opens when the air pressure to the diaphragm chamber is increased Fig 8 D52B and D52C Structure of direct action type and part names Fig 9 R52B and R52C Structure...

Страница 11: ...rect action type Fig 11 Reverse action type No Name No Name No Name 201 MO cover 209 Thrust ring 221 Conical washer for hex socket head 202 Worm and handle shaft 210 Guide shaft 222 U nut with cap 203...

Страница 12: ...diaphragm plate and the actuator rod move upward by means of the reaction force of the spring and the stem also moves toward the valve open position Reverse operation In the reverse action RA type the...

Страница 13: ...eaking from the instrument air pipe connecting port If a positioner is provided check that hunting is not occurring and the movement of the stem is smooth While making adjustment check that abnormal n...

Страница 14: ...ies If no anomaly is found with it re adjust the booster relay and positioner or check the accessories and replace them Issue with the actuator Disassemble and repair the actuator The manual operation...

Страница 15: ...31 which fastens the connector 112 shown in Fig 12 to remove the indicator 137 The state is to be as shown in Fig 13 Apply a rectangle tipped chisel to the concave section of the yoke nut17 and hit it...

Страница 16: ...event from loosening For loosening the hex bolt tighten the double hex nut on the threaded portion of the actuator rod for mounting the connector and loosen the hex bolt while fixing that nut with a s...

Страница 17: ...unit can be removed from the yoke 101 The parts within it can be checked in this state If no damage is found it is not required to disassemble it If any damage is found contact our service department...

Страница 18: ...check that the plug contacts the valve seat surface When installed on a Hammel Dahl control valve the stem 5 will require a stem adapter as shown in Fig 12A Prior to installing the stem connector inst...

Страница 19: ...ing it to an industrial waste treatment services authorized by the governor of prefectural governments or to a local municipal entity undertaking the disposal according to the Waste Disposal and Publi...