HT Choke

Features

• Full product range from 2-in to 6-in nominal sizes
• Modular top end design available in manual or actuated configurations
• Actuation components are strategically distanced from the heat of the bore fluids, effectively isolating the operator from the thermal energy
• Forged body construction available in flanged, studded, or clamp hub end connections, with further options to suit specific requirements
• High-density graphite filament stem packing stack with multiple redundancy and easy installation and adjustment, thus providing trouble-free sealing in conditions up to 650 degF
• Tungsten carbide trim components as standard, offering erosion resistance and extended service life in the most severe service wells
• Stainless steel and Stellite trims available
• Optional wear sleeve for enhanced protection of the choke body

Specifications

• Up to 10,000-psi pressure rating as standard
• Extended HPHT ratings also available
• Full range of flanges, end connections, and interface dimensions available
• API Spec 6A material classes EE, FF, and HH
• API Spec 6A temperature classifications over range L–Y (–50 to 650 degF [–46 to 345 degC]
• All types of service: Bitumen, steam, water, gas, sour, and sandy service
• Canadian Registration Number approval

Actuation options

• Manual handwheel
• Linear pneumatic: diaphragm or piston type
• Linear hydraulic actuation
• Stepping actuation: hydraulic or pneumatic
• Electric actuation

Trim options

• Linear and equal percentage trim characteristics
• Reduced capacity trim for low C_v control
• Special trims, including low noise and maximum capacity cages

Maintenance and spares

• Specific trim kits and seal kits for ease of ordering replacement parts
• Easily maintained in the field
• No special tools required