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Adjustable Choke Valve

H2 TYPE CHOKE VALVE

Nu-Tech manufacture both Positive and Adjustable chokes in pressure rating up to 15,000 psi WP. With different style of end connection. Adjustable Chokes are meant for variable flow. It has externally controlled indicator showing orifice size in the increment of 1/64th inch. The variation in choke size is achieved by rotating hand wheel to obtain desired flow rate at down stream side.

Nu-Tech Adjustable Chokes Contain following features:

  • Interchangeability of parts to construct a positive, adjustable, or combination choke.
  • Bonnet nut has rugged integrally forged lugs for hammering nut loose.
  • Built-in safety feature which releases residual pressure in the choke body before the nut is fully removed. The inside of the choke body is vented to atmosphere after the bonnet nut is partially removed.
  • Interchangeability of component parts for a particular pressure range. For example, the same blanking plugs and bonnet assemblies are used in nominal 2” 2000 through 10,000 psi WP .
  • Stainless steel adjustable choke needle and seat (Tungsten Carbide/Ceramic lining needle and seat also available for severe service applications) Different end connections (API / ANSI, flanged / Threaded) are available upon request.

  • Working Pressure : API 2000 PSI-10000 PSI, ANSI : 600-2500 LB
  • Nominal Bore : 1.13/16"-7.1/16" (46 mm - 180 mm)
  • Working Medium : Oil, Natural Gas, Mud and Gas Containing H2S, CO2
  • Working Temperature : -46 C-121 C
  • Material Class : AA, BB, CC, DD, EE, FF
  • Specification Level : PSL 1-3
  • Performance Requirement : PR1-2

POSITIVE CHOKES & BEANS

Positive Chokes accommodate fixed orifice dimensions. All Nu-Tech Adjustable Chokes can be converted into Positive Chokes by replacing the bonnet assembly with an appropriate blanking plug assembly and choke bean .

CHOKE BEANS

Nu-Tech choke beans are suitably hardened to maintain accuracy level for longer period. Tungsten Carbide lined choke Beans are available for high pressure drop and severe application

BEAN WRENCH

Nu-Tech Bean Wrench come with hexagonal socket box for Bean Adapter and Bean separately. The Adjustable choke seat and Bean Adapter are accommodated in same wrench for a particular size .

No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21
Item Body Choke Bean "O" Ring Disc Stem Retainer Ring Stem Bearing Packing "O" Ring Seal Ring Bonnet Wing Nut Yoke Retainer Bearing Stem Nut Grease Cup Stem Nut Gland Handwheel Stem Cap Indicator
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Adjustable Choke Valve

Nu-Tech External sleeve control choke, (Model-NC)

Nu-Tech External sleeve control chokes minimize erosion and improve flow characteristics suitably for erosive service and under high pressure drop, with sand concentration.

It applies the principle of “flow Impingement” to dissipate and contain the destructive forces of cavitation, within the heavy duty thick walled cage of tungsten carbide .

OTHER FEATURES

  • Spring loaded pressure energized stem seal.
  • Field proven metal bonnet seal .
  • Dependable positive shut-off .

  • Working Medium : Oil, Natural Gas, Mud and Gas Containing H2S, CO2
  • Working Temperature : -20 C-180 C
  • Material Class : AA, BB, CC, DD, EE, FF
  • Specification Level : PSL 1-3
  • Performance Requirement : PR 1-2

No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
Description Body "O" Ring "O" Ring Cage Nozzle External Sleeve "O" Ring "O" Ring "U" Ring Snap Ring Packing Bonnet Bolt & Nut Stem Stem fixed Seat Bearing Grease Fitting Wing Nut Stem Nut Indicator Protective Cover Hand Wheel Stem Yoke Stem Gland
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