12
Op
G
L
lobe Control Valve
O
S
Figure 3: Air-action Configurations
Air-to-Open
Air-to-Close
Страница 1: ...shutoff easier to achieve Valve specifications are as follows Table 1 Specifications TABLE OF CONTENTS INTRODUCTION Scope of Manual pg 1 Description pg 1 Specifications pg 1 Safety Information pg 1 U...
Страница 2: ...uator vertical above the body This is also important for cryogenic applications to keep the packing isolated from the flowing medium permitting the packing temperature to remain close to ambient tempe...
Страница 3: ...the Assembly Disassembly section 1 Inspect end flanges and bonnet for signs of gasket leakage Tighten flange and bonnet bolting if required See Table 4 2 Check the pressure balance sleeve metal bellow...
Страница 4: ...ep 2 If valve is air to open apply air under piston to raise the plug off the seat before taking the valve apart 2 Take out the bonnet flange bolting which will allow for removal of the actuator bonne...
Страница 5: ...the top guide to enter Different spacer lengths allow a wide variety of packing configurations such as twin seal and vacuum pressure packing WARNING Valves with extended bonnets or metal bellows seals...
Страница 6: ...d up against the finger tight body with such force that it will not be possible to wriggle the flange If improper seating occurred the bonnet flange can be wriggled with light hand force If this occur...
Страница 7: ...positioned correctly between the bonnet and seat ring 2 Loosen the stem clamp 3 Take out the packing box bolting and yoke clamps 4 Completely unscrew the actuator off of the plug and bonnet without r...
Страница 8: ...time until it is in place Replace the stem bellows and the stem clamp 7 Reinstall the gasket and adjusting screw using a new adjusting screw gasket The adjusting screw should be tightened only to the...
Страница 9: ...points to the closed position 13 Reconnect the actuator positioner tubing supply and signal lines AIR ACTION REVERSAL Air to Open To switch the air action from air to close to air to open continue as...
Страница 10: ...No 88 Yoke Clamp Item No 76 Packing Spacer s Item Nos 94 99 Bonnet Item No 40 Bonnet Flange Item No 70 Anti Extrusion Spacer Item No 93 Adjusting Screw Gasket Item No 248 Spring Button Item No 227 Ac...
Страница 11: ...Square Packing w Lubricator Fitting Twin Square Packing w Lantern Ring Braided Wiper Rings 2 Vacuum Seal V packing Vacuum Seal Twin V packing w Lantern Ring Fugitive Emissions Packing PTG PT PTXT Liv...
Страница 12: ...12 OpGL Globe Control Valve O S O S Figure 3 Air action Configurations Air to Open Air to Close...
Страница 13: ...em No 114 Bonnet Flange Stud Item No 108 Bonnet Flange Item No 70 Figure 4 Exploded View Body Assembly NOTE Item numbers correspond directly to the valve s bill of material Refer to it for specific pa...
Страница 14: ...Screw Gasket Item No 248 Cylinder Item No 202 Serial Plate Item No 252 Stem Clamp Item No 249 Stem Clamp Bolt Item No 240 Spring Button Item No 227 Spring Item No 229 Actuator Stem Lock Nut Item No 3...
Страница 15: ...service conditions and contact factory 5 Incorrectly adjusted plug 5 Refer to steps 8 10 of Reassembling the Body section for correct plug adjustment 6 Improper flow direction 6 Refer to original spec...
Страница 16: ...ly and should not be considered certified or as a guarantee of satisfactory results by reliance thereon Nothing contained herein is to be construed as a warranty or guarantee express or implied regard...