H2
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H2I adjustable choke assembly H2I adjustable choke H2I positive choke assembly H2IMS positive choke Safety features of bleed screw assembly Choke trim

H2 Choke Applications and Service Criteria The family of H2* needle-and-seat chokes is ideally suited for a broad range of choke applications, including wellhead, production manifolds, choke and kill manifolds, well testing and clean-up operations.The H2 classic choke handles standard, erosive and corrosive service in stride with pressure ratings up to 15,000 psi. Two configurations are available: ■ Positive choke—provides a fixed flow condition with a large selection of available bean sizes and types. ■ Adjustable choke — provides variable flow rates, but can be locked into position if a...

Bonnet Closures for H2 Chokes The H2 classic choke has an externally threaded body and is the industry standard for needle and seat chokes. ■■ H2 classic choke externally threaded bonnet closure Disassembly safety features Body pressure is automatically vented when the operator unscrews the bonnet nut one turn. Bleed valve allows the operator to safely vent the body cavity pressure prior to removal of the bonnet assembly. Bleeder vent Tapered bore O-ring seal Bleed screw shown in closed position Forged bonnet nut with lugs Bleed valve Retainer ring Bonnet PRESSURE Optional pressure/...

The H2I internal body needle-and-seat choke has an internally threaded body and features a retained bonnet closure. ■■ Patented bleed screw assembly requires the operator to safely vent the body pressure before the bonnet assembly can be removed. Each body (positive or adjustable configuration) is equipped with a port for monitoring or venting pressure. Acme threads can be cleaned and inspected easily on both the bonnet assembly and body. Bleed screw assembly provides metal-to-metal sealing. H2IMS option adds a metal-to-metal bonnet seal in addition to the standard features of the H2I...

H2 choke is designed and manufactured in accordance with API 6A, including performance verification testing for PR2 level chokes Forged body Easy operation and maintenance Choke position indicator Stem lock Hole in bonnet nut to facilitate venting of pressure Forged bonnet nut with lugs H2 classic choke prevents bonnet seal extrusion by means of body-to-bonnet contact behind the O-ring seal The bleed valve allows safe venting of the body cavity pressure

H2 classic adjustable choke 10 ksi assembly ■ 2 in nominal (1 in maximum orifice) and 3 in nominal (2 in maximum orifice) ■ 2,000-10,000 psi working pressure 15 16 17 20 Components Item Description Quantity * Recommended spare parts H2 classic choke needle assemblies are not interchangeable with H2I and H2IMS adjustable chokes.

Components Item Description Quantity 1 Recommended spare parts

Components Item Description Quantity 1 Recommended spare parts

H2 classic positive choke 15 ksi assembly ■■ 2 in nominal (1 in maximum orifice) Components Item Description 1 Bonnet nut Retainer ring Gland Blind plug Bonnet Roll pin Bonnet gasket† Name plate Drive screw Body spare parts NOTES: Flow beans are sold separately. Routine cleaning and inspection of the bonnet closure threads are recommended for longer servic

The H2I adjustable choke is designed and manufactured in accordance with API 6A, including performance verification testing for PR2 level chokes H2IMS adds metal-to-metal bonnet seal in addition to the standard features of the H2I adjustable choke Forged body “Retained bonnet” closure improves operator safety Easy operation and maintenance Spanner wrench holes instead of lugs on bonnet nut prevent damage during tightening or loosening. The H2I adjustable choke also accepts pipe wrenches or strap wrenches Stem lock The H2I adjustable choke features larger Acme threads than the H2 classic...

H2I adjustable choke assembly ■ 2 in nominal (1 in maximum orifice) and 3 in nominal (2 in maximum orifice) ■ 2,000-15,000 psi working pressure Components Item Description Quantity 20 Bleed screw assembly 1 1 Recommended spare parts Components Item Description Quantity 1 Recommended spare parts NOTE: The parts list for the H2IMS adjustable choke is the same as the H2I choke with the exception of items 28, 29 and 30. Those items replace items 10 and 18 of the H2I choke. Field conversion of the H2I choke is simple.

H2I positive adjustable choke assembly ■ 2 in nominal (1 in maximum orifice) and 3 in nominal (2 in maximum orifice) ■ 2,000-10,000 psi working pressure Components Item Description Quantity 9 Bleed screw assembly 1 1 Recommended spare parts H2IMS positive adjustable choke Components Item Description Quantity 1 Recommended spare parts NOTES: The parts list for the H2IMS adjustable choke is the same as the H2I choke with the exception of items 14, 15 and 16. Those items replace items 5 and 7 of the H2I choke. Field conversion of the H2I choke is simple. Safety features of bleed screw assembly...

Choke Trim ■ All beans and seats are interchangeable with the H2 classic choke, H2I adjustable choke, and H2IMS adjustable choke. ■ The H2I adjustable choke and H2IMS adjustable choke utilize the same longer stem/needle assembly to fit the recessed seat feature. ■ The H2 classic choke stem/needle assembly is shorter, and therefore, not interchangeable with the H2I adjustable choke and H2IMS adjustable choke needle assemblies. ■ Two wear resistant trims are available: • Standard trim: Induction hardened stainless steel. • Super trim: Stainless steel with tungsten carbide wear surfaces. Choke...

The H2 choke utilizes a simple needle and seat-type trim to control the flow and/ or pressure and is used in many applications. The H2 choke is a development of the “classic” H2 choke that incorporates a device which positively stops the choke from being dismantled without pressure being first vented from the body. The needle and seat chokes feature positive or adjustable trims, hardened steel and tungsten carbide trims, and a lockable trim position for manual chokes.