DOYLES can manufacture a choke and kill manifold to meet your specific requirements, from simple low pressure to extreme sour gas service. The manifold can be designed with any number of fixed chokes, manually adjustable chokes and automatic chokes with a working pressure of 3,000, 5,000, 10,000 or 15,000 psi.

All flow fittings are suitable to H₂S service as defined by NACE MR0175, even if not specifically requested. Fittings include buffer chambers, spools, crosses and tees. In addition, all components are manufactured in accordance with API spec 6A and the choke manifold assembly is manufactured in accordance with API spec16C. Consequently, replacement parts can be purchased anywhere in the world if needed.

All components, including the items described in this paragraph, meet H₂S specifications and all welded components receive post-weld heat treatment in accordance with approved procedures.

Welding is performed by qualified personnel, in accordance with qualified procedures. All welds are full penetration welds and conform to ASME Section VIII. All welds receive visual, magnetic particle and ultrasonic inspection to ensure the utmost quality and performance.

Telescoping and non-telescoping skids can be fabricated to fit your manifold assembly. Safety rails can be ordered to conform to conform to safety requirements. The choke manifold is mounted to the skid using custom-manufactured u-bolts to provide strong gripping power. U-bolts, together with a strong I-beam base, provide the strength needed to maintain the correct orientation of your assembly. The u-bolt base beneath the buffer tank is also slotted to allow the buffer tank to be pulled straight back without lifting the buffer tank out of any pipe-style saddles. This enables you to remove the buffer tank with out any lifting equipment, greatly reducing down time.

DOYLES will provide the customer with a complete data book. It contains the following: A copy of the current API license, certificate of conformance, work order, inspection forms containing dimensional information, inspection authorities, pressure testing information, drift testing information, assembly authority, and hardness testing information. Heat treat charts and certificates are provided for each buffer tank and all welded items. Copies of hydrostatic test charts are also supplied. Material test reports, welding procedures, heat treat procedures and other possible requirements can be supplied if requested at the time of order.

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