SUPER-H - Class 1500 & 2500 - Regular & Venturi Patterns

 
AUDCOSUPER-H Pressure Balanced Plug Valves have been developed to reduce the operating torque in plug valves without compromising on the in-line maintance capability.The plug and body seating surface,which are lapped and mached,are not exposed to the line fluid while valves arte in open condition: this confines corrosion and erosion to less critical areas. Sealing is farther enhanced by specially developed plug sealants charged evenly around the seating surfaces. The plug is impregnated with PTFE based anti-friction agent - "SUPER LoMu'which provides greater wear resistance and ensures consistent operating torque

 

PRESSURE BALANCED PLUG

              FIRE SAFE
In a standard taper plug valve. I he line fluid finds Hv way into ihc large end chamber of the plug. The resultant force pushes (he plug into its taper seal causing taper locking and possibly valve seizure. This rtsullani force persists when the subsequent line pressure remains high or is reduced. To unseat the taper locking and keep the valve operational, frequent sealant injection is required. In pressure balanced plug valve pressure balancing is
 
Supcr-H Pressure Balanced Plug valves arc designed to meet fire lest standards. The features incorporated in the valve make the valves seal ami operate effectively even after being subjected to lire of varying temperatures and duration resembling fire accidents.
 
STANDARDS
 
Valve Design API 6D
Face to Face ASME/ANSI BI6.10
and BS 2080
End Flange dimensions
and drilling
ASME/ANSI B I6.5
Inspection & Testing API 6D and BS 6755 Part 1
Fire tests API 6FA
 
OPERATION AND MAINTENANCE

SUPER-H Pressure Balanced Plug valves generally need very little attention <>n installation. However, for trouble free operation sealant injection as recommended is to be carried out. Please refer lo "Installation. Operation & Maintenance Manual ol Super-H Pressure Balanced Plug valves" for details.

As a standard, Supcr-ll Pressure Balanced Plug salves arc supplied with AUDCO 733 Plug Sealant suitable for most hydrocarbon services in a temperature range of —10 to 480* K On request, plug sealant from a wide range offered, can be supplied to suit ihe nature of sen ice* It is ivcoiiimended that you consult us before selecting the plug sealant for a new service.
   
 
achieved by providing two holes in the plug connecting the chambers at each end of the plug. The chambers, one fitted with a non-return valve act as a balancing mechanism for the plug. The pressure in the large end chamber always equals line pressure and the pressure in the small end chamber is alu ays equal to or greater than the line pressure, minimising the resultant force- Pressure balancing eliminates nut of balance forces and consequent lapcr locking. The Figure slums clearly how a balanced position is reached when line pressure is allowed to equalise the pressure acting on each of the plug.
   
 
for case of adjustment, it is desirable that 6 (150mm) clearence be maintained around the pressure screw located at the bottom of the valve
 
for case of adjustment, it is desirable that 6 (150mm) clearence be maintained around the pressure screw located at the bottom of the valve
 
       DIMENSIONS (mm)                                                                                                Class 1500   
Size
Inch mm
pattern A B C D E Wrench Wrench
length
Gear
Unit
F
RF RTJ
2 50 R 368 371 216 38.1 120 - B5S 684 - -
3 80 R 470 473 267 47.8 165 - B7 933 - -
4 100 R 546 549 311 53.8 190 307 - - 27M3 578
6 150 V 705 711 394 82.6 205 338 - - G400M3 578
8 200 V 832 841 483 92 264 421 - - G400 700
12 300 V 1130 1146 673 124 350 636 - - 3MS 787
 
       DIMENSIONS (mm)                                                                                                Class 2500   
 
Size
Inch mm
pattern A B C D E Wrench Wrench
length
Gear
Unit
F
RF RTJ
2 50 R 451 454 235 50.8 185 - B5S 684 - -
3 80 R 578 584 305 66.5 218 307 - - 27M3 578
4 100 R 673 683 356 76.2 218 338 - - G400M3 578
 
                                                                      MATERIAL SPECIFICATION 
Name of part specification
   1.Body
ASTM A 216 Gr, WCB
   2. Plug
ASTM A 216 Gr WCB
Case hardened &
Super LoMu treated
   3. Cover
ASTM A 216 Gr WCB
   4. Boiling Studs
        Nuts
ASTM A 193 Gr. B7
ASTM A 194 Gr. 2H
   5. Packing
Graphite
 
 
  TEST PRESSURE
 
 
  Max CWP
at-20 to 100 F
Hydrostatic
Shell Seat
psig bar psig bar psig bar
Class 1500 3705 256 5575 384 4080 281
Class 2500 6170 426 9275 640 6790 468
 

      CATALOGUE NUMBER

A familiarity with our catalogue number is noi necessary when specifying or ordering our valves. If full description of the valve could be provided we will translate this into a catalogue number formulated as per the following system.