Khalsa Oilfield Equipments Private Limited

Hy-Chrome Sleeved Liner has been engineered to overcome the specific stresses that this part encounters in drilling operations.

Conventional liners have a decreasing hardness gradient from the bore. On the other hand, offers a bimetallic supreme sleeved liner. It is an assembly of liner shell with liner sleeve. The liner shell is centrifugally cast and heat treated to withstand hoop stresses generated in shrink fitting and stress reversals during operation.

Construction: The liner sleeve is of high chromium alloyed martensitic white iron and thin walled seamless tube. Special heat treatment ensures proper carbide grain formation, refined microstructure and controlled gain size. Liner sleeves, therefore, offer the maximum possible wear and corrosion resistance. Liner sleeves are through hardened to provide a uniform hardened wear surface throughout the useful life of the liner. The sleeve bore hardness is 60 to 67 Rockwell C scales while the hull has high tensile strength of more than 90000 psi. Uniform wear resistance increases service life – and reduces frequency of liner changes.

The liner is manufactured to tolerances confirming than API Spec-7K. The result is a perfect fit between:-

Liners Sizes: Hy-chrome liners are available from 5” – 6” in increments of ½” and from 6” – 7” in increments of ¼”.

Triplex Pump - Hy-Chrome Liners

Available for following make:

• Oil Well
• National
• Gardner Denver
• Continental Emsco
• Indeco
• Romanian

Model of Pumps:

• A1700 PT / A-1400 PT
• A-1100 PT/A-850 PT
• 12P-160
• 10P-130
• PZ-8
• PZ-9
• PZ-10
• PZ-11
• F-1600
• F-1000
• F-1800
• F-650
• T-1600
• 3PN-1600
• 3PN-1000

For Triplex and Duplex mud Pumps Piston cores are made of normalized carbon steel forgings. Clearances of Piston core and liner bore are kept below 010". Piston rubber cup is of fluid king design. It features a stronger lip as compared to the cantilevered sharp lip. It also extends piston and liner life.

Piston rods are available in single-piece design or two-piece design depending upon the type of mud pump. For `L’ head pumps such as National and Oil Well brands, two-piece rods are offered to facilitate removal of piston. An elastic stop nut is available for tightening the piston on to the piston rod. A specially designed piston rod nut wrench is available to prevent crimping the wall of the splined elastic stop nut. Other useful piston and rod removal tools are also offered.

Suitable for all drilling pressures. Valve assembly consists of valve body, valve insert and knock – on plate. Valve insert is secured to the valve body by a strong knock – on plate nut which minimizes the entry of solids such as lost circulation material under the insert and between the valve striking surface and insert. The heavy and extra strong integral driving lugs on knock – on plate nut ensure easy assembly and disassembly when changing the valve insert.

The lower valve stem with flat end facilitates holding in the vice for insert replacement without damaging the guide area. The face as well as diameter of the valve body are threaded. Both threads on valve body are coated with anti-seize compound to prevent corrosion. This facilitates replacement of insert.Selectively hardened lower flange face of valve body transmits severity of impact, if any, to flat cross arms of seat instead of tapered sealing surface. The valve body is placed square and flat on the valve seat. There is no shifting due to heavy load from fluid pressure.

• Valve Inserts: Valve inserts are available in Nitrile and Polyurethane material. For low pressure and normal operating conditions, use Nitrile inserts. For high pressure and severe operating conditions, use Polyurethane inserts. During closing, the resilient valve insert makes first contact with the bevel on the seat and absorbs shock.

• Valve Seats: Valve seat has precisely ground tapered outside diameter, which is perfectly matched with pump deck taper to provide metal to metal seal between high pressure and low pressure. Rigid design of three cross arms acts as a guide to valve stem. It increases metal to metal contact between valve body and seat for distributing the impact forces over a large area. It also provides enough flow-through area essential for smooth and knock-free operation of the pump. Wear grove at the junction of bevel sealing surface and flat cross arms indicates limit of permissible wear.

These valve covers are available in forged & machined EN-8 material for A 1400 PT / A1700 PT / A1100 PT / A 850, PZ-9, PZ-8, PZ-10, PZ-11, 12P-160, 10P-130 pumps.