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Series 2200/2220 Control Valve - Alberta Oil Tool

Series 2200 / 2220 Control Valve Operation and Maintenance SCOPE OF MANUAL MAINTENANCE. This instruction manual includes installation and maintenance information for the " and " Series CAUTION. 2200 / 2220 Control valves . Refer to separate manuals for Before attempting any repairs, isolate the Control Valve from instruction covering controllers, positioners, etc. the system and make sure that all pressure is released from the Valve body. DESCRIPTION. A. Valve DISASSEMBLY INSTRUCTION. The Series 2200 / 2220 Valve design has a close coupled or yoke mounted pneumatic diaphragm actuator, hammer nut 1. When the actuator is to remain connected: closure, and unbalanced Valve plug. For reverse (Spring Closing) actuators, remove all spring compression by unscrewing adjusting screw (item 20). Valve INSTALLATION. Disconnect air supply line from actuator. 1. Before installing the Valve , inspect for shipping damage Unscrew hammer nut (item 5) from body (item and for any foreign material that may have collected 1).

Operation and Maintenance Series 2200/2220 Control Valve Maintained by: Sales Department Page 1 of 7 Doc. Name: OpMain2200.doc Approved by: Quality Department Rev.: C Date: 15-Apr-03

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Transcription of Series 2200/2220 Control Valve - Alberta Oil Tool

1 Series 2200 / 2220 Control Valve Operation and Maintenance SCOPE OF MANUAL MAINTENANCE. This instruction manual includes installation and maintenance information for the " and " Series CAUTION. 2200 / 2220 Control valves . Refer to separate manuals for Before attempting any repairs, isolate the Control Valve from instruction covering controllers, positioners, etc. the system and make sure that all pressure is released from the Valve body. DESCRIPTION. A. Valve DISASSEMBLY INSTRUCTION. The Series 2200 / 2220 Valve design has a close coupled or yoke mounted pneumatic diaphragm actuator, hammer nut 1. When the actuator is to remain connected: closure, and unbalanced Valve plug. For reverse (Spring Closing) actuators, remove all spring compression by unscrewing adjusting screw (item 20). Valve INSTALLATION. Disconnect air supply line from actuator. 1. Before installing the Valve , inspect for shipping damage Unscrew hammer nut (item 5) from body (item and for any foreign material that may have collected 1).

2 During crating and shipping. Remove plastic plugs for Lift entire topworks (actuator assembly with flange protectors from body. Valve stem (item 11) and plug attached) from 2. Blow out pipelines to remove pipe scale, chips, welding Valve body (item 1) and place on a flat work slag, and other foreign materials. surface. 3. Install Valve in pipeline, with direction of flow through body determined as follows: CAUTION. Directed over the seat ( )for quick Be careful with plug and extended stem, protecting the stem opening trim, from being bent. Directed under the seat ( ) for modified percent trim. Remove plug (item 2) using 1/8 inch drift pin or 4. Install Valve using good piping practice, with actuator punch, drive roll pin (item 15) from plug (item vertical above body. Flanged bodies will require a 2). suitable gasket between the body and pipeline flanges.

3 5. Working pressure of Valve body is not necessarily the CAUTION. shut-off pressure of the Valve actuator. Consult the Protect stem from bending by using a solid block as back-up shut-off tables or factory. while hammering the roll pin from plug. 6. The Series 2200 / 2220 bodies are rated for ANSI classes 150, 300, 600, 900, and 1500. Do not install the Valve Pull seat/cage (item 3) from body (item 1). (It in a system where the working pressures exceed those may be necessary to use a hook, hooked in the specified in the standards. cage flow openings. 7. Connect instrument air to actuator. Replace seat/cage and reassemble Valve by 8. Actuators with adjustable spring can be adjusted to reversing the procedure of steps 1 through 6. increase or decrease shut-off capability. Turn clockwise 2. When actuator is to be disconnected and taken to increase pre-load, turn counterclockwise to decrease off the body: pre-load.)

4 See "Actuator Disassembly". Unscrew hammer nut (item 5) and lift off over bonnet (item 10). Remove bonnet (item 10) from body (item 1). along with Valve plug (item 2) and stem (item 11). Remove Valve plug (item 2) from stem (item 11).Using 1/8 inch drift pin or punch, drive roll pin (item 15) from plug (item 2). Maintained by: Sales Department Page 1 of 7 Doc. Name: Approved by: Quality Department Rev.: C Date: 15-Apr-03. Series 2200 / 2220 Control Valve Operation and Maintenance housing (item 18) by sliding it upward over the CAUTION stem (item 20). Protect stem from bending by using a solid block as back-up Remove cotter pin (item 31 or 34) and unscrew while hammering the roll pin from plug. upper stem (item 20) from lower stem (item 11. or 25). Remove bearing washer (item 26 or 29), Remove packing washer (item 7) and spring diaphragm (item 17) and diaphragm plate (item (item 8), and pull Valve stem (item 11) out of 21).

5 Bonnet (item 10). Unscrew lower housing (item 16) from yoke Remove packing (item 9A2) assembly by (item 24) or bonnet (item 10). inserting drift pin or punch in top of bonnet (item Loosen jam nut (item 38) that secures Valve stem 10) and tapping on upper retainer (item 9A1). to actuator stem (item 25) and unscrew the stem. until packing (item 9A2) comes out the bottom. Unscrew and remove yoke (item 24) from After any necessary replacement of parts, re- bonnet (item 10). assembly is accomplished by reversing the procedure of steps 1 though 6. C. ACTUATOR ASSEMBLY. B. ACTUATOR DISASSEMBLY 1. Reverse Actuator 1. Reverse Actuator (Spring Closing) close coupled Reverse the procedure of "Actuator Disassembly". or Yoke mounted. - Reverse Actuator. For reverse actuators, remove spring compression 2. Direct Actuator by unscrewing adjusting screw (item 20).

6 Reverse the procedure of "Actuator Disconnect air supply line from actuator. Disassembly", - Direct Actuator. Remove cap screw (item 29) from diaphragm D. PREVENTIVE MAINTENANCE. housing (item 18), and remove upper housing 1. Seat (item 18) and actuator spring (item 23). Check every six (6) months if in normal service, Remove hex nuts (item 31) from top of stem , no sand or abrasives and low pressure drop. (item 11). If in severe service, high pressure drop and Remove lock washer (item 32), spring retainer sanding condition, check every sixty (60) days. (item 24), bearing washer (item 26), diaphragm 2. Inner Valve plate (item 21) and diaphragm (item 17). Same as above. Unscrew lower housing (item 16) from yoke (item 25) or bonnet (item 10). 3. Bonnet Loosen jam nut (item 38) that secures Valve stem Check packing every year. (item 11) to actuator stem (item 26) and unscrew 4.

7 Actuator the stems. Check diaphragm and o-rings once a year. Remove yoke (item 25) by unscrewing from 5. General Maintenance bonnet (item 10). When disassembling any portion of Valve , always 2. Direct Actuator (Spring Opening) close coupled check o-rings for damage or wear before re - or Yoke mounted. assembly. Disconnect air supply line from actuator. 6. Body Loosen set screw (item 34 or 37) at base of Under normal conditions, body should last years. spring cover (item 19) and remove cover, thus However, under severe conditions, corrosion, exposing spring (item 23). sand and high pressure drop, Valve life could be Unscrew and remove spring adjusting nut (item numbered in days only. Inspect body every time 30 or 32) at top of actuator stem (item 20). actuator is removed. Remove upper spring retainer (item 22), and spring (item 23). Remove cap screws (item 32 or 35) around diaphragm housing (item 18) and remove upper Maintained by: Sales Department Page 2 of 7 Doc.

8 Name: Approved by: Quality Department Rev.: C Date: 15-Apr-03. Series 2200 / 2220 Control Valve Operation and Maintenance TROUBLE DIAGNOSIS. WARNING SIGNAL IMMEDIATE CAUSE CORRECTIVE ACTION. Valve leaks when in the Something under plug or Valve Remove spring tension from Valve if a spring closing Valve . closed position. plug and seat are worn. Remove Valve top from body by turning hammer nut. By visual inspection you can see whether plug and seat are worn. Plug is usually the first to be replaced. Diaphragm housing leaks air Worn out diaphragm or Remove pressure form diaphragm housing and disassemble top. from breather plug. diaphragm plates have worked Replace diaphragm and o-ring. If nuts that hold diaphragm loose and need tightening. plates are loose, retighten. Valve leaks. Flow under Pressure drop across Valve too If spring is compressed all the way, then the actuator is too plug.

9 Valve normally closed. great. small or pressure drop across Valve plug is too high. Check Seat and plug , nothing Valve pressure drop table for limits on pressure drop and/or under plug. consult your Norriseal representative. Valve will not open. Flow Pressure drop across Valve Reduce spring tension. If this will not let Valve open, then the over plug. Normally closed seat too great. actuator is too small or pressure drop across Valve plug is too Valve . high. Consult pressure drop table and/or your Norriseal representative. CAUTION. Valve globe body has this symbol ( ) cast on one side. Flowing ( ) indicates flow under plug. Flowing ( ) indicates flow over plug. Flow under seat is for throttle service. Flow over plug can be used for on-off service. Flow under seat requires adjustment of the spring to be sufficient to keep plug on seat for tight shut off.

10 Flow over seat requires sufficient air supply to raise plug from seat to open Valve . CAUTION. When flowing over plug and high pressure service is involved, slapping of plug on seat (Bath tub stopper theory) can occur and this will shorten the plug, seat/cage life. Reverse - normally closed Valve : After applying spring compression to the actuator spring apply air to actuator and stroke Valve to make sure of Valve 's travel. Direct - normally open Valve : Air supply to actuator must be sufficient to hold plug on seat when flow is under plug. Flow over seat requires enough pre-load on spring to offset pressure over plug to pull plug off seat. Again you must have sufficient air pressure to force the plug into the seat. The 1" and 2" globe body has one inlet and one outlet port. The 1" "T" body has three ports, one inlet and one outlet with a pipe plug in the third port.


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