PLUNGER PUMPS & MUD PUMPS/VALVES/VALVE SEATS-KNC PRECISION CASTING

KNC Precision Casting Plant is the precision casting production base of

KNC petroleum equipment co., ltd.

KNC Petroleum Equipment Co., Ltd, covering 88,000 square meters with

building area of 43,000 square meters, specializes in producing plunger pumps,

mud pumps and other petroleum machinery equipment as well as related

spare parts.

KNC Precision Casting Plant has built a complete industry chain, depending on

petroleum equipment, relying on solid technical force and complete detection

devices.

KNC precision casting includes the process of product designing, mould

making, casting, machining, heat-treating etc, and owns advanced

detection devices, such as directly-read spectrometer, metallographic analysis

instrument and perfect quality assurance system, with the certification of

API 7K & ISO9001-2000.

KNC Precision Casting Plant has the annual capacity of 5000 tons. It can

cast a wide range of metal roughcasts, process various finished parts,

which are widely used for construction machinery, petroleum machinery,

transportation, mining and metallurgical, medical equipment and so on.

Its products are mainly exported to Europe, America, Canada and other

countries and regions. Excellent business relations have been built with

the following companies: America Sam Houston Alloy Company ,

Gardner Denver Nash Machinery Ltd.,(Original NEIC) , Clyde

Bergemann,Inc , John Crane.

KNC casting technology: Sand casting , Silicasol investment casting

Weight Range (single part):precision casting 8g-70Kg , sand casting 2Kg-500Kg

Product Size (single part): Precision casting length ≥1000mm

International Quality Certification: API 7K & ISO9001-2000

stem-guided valve & cross-arms seat

features an extra wide metal to metal

seal on the valve flange. The serrated

upper surface on the valve gives a

longer non-breathing seal between

valve body and insert while the rigid

seat cross-arms give greater strength

and positive sealing.

The strong, thick, valve knock off nut holds the insert tightly reducing flex and breathing

which lessens the chance of foreign matter getting between valve and insert.

► Material is 20CrMnMo / 20CrMnTi forging steel, carburizing and quenching, thickness is

1.5mm - 1.8mm, hardness is HRC58-62, and hardness of the core is HRC27-33.

► The 55°angle and screw thread of the valve have carburized protection, and the

whole is phosphorated. The specifications of the valve are API-4#-9#, PJ-482A, etc.

► The specifications of the seat are API-4#-9#, PJ-451, etc.

Three-wing guided valves and full open

seats features greater fluid flow than four-

wing valves, the unibody forged valve

features greater strength than traditional

welded-wing valve. Innovative unibody

valve design eliminates snap rings, plates

or keepers providing reduced maintenance

by snap-on valve inserts and easy installation.

► Material is 20CrMnMo / 20CrMnTi forging steel, carburizing and quenching, thickness is

1.5mm - 1.8mm, hardness is HRC58-62, and hardness of the core is HRC27-33.

► The 55°angle and screw thread of the valve have carburized protection, and the

whole is phosphorated. The specifications of the valve are API-4#-9#, PJ-482A, etc.

► The specifications of the seat are API-4#-9#, PJ-451, etc.

The Double Angle O-ring Valve is made

with a tough one-piece body to run

more hours between change outs. It's

made with carburized premium alloy

steel to resist wear, provide a positive

seal, and help protect against wash

out or damage to the pump.

FEATURES

► Specified for all drilling operations up to and exceeding 5,000 psi

► Maximum operating temperature is 170°F

► Patented polyurethane insert is noted for its "Double Angle" 55° seal contact surface,

which maintains cylinder priming during pump shutdown

► Sizes fit most mud pumps

► Shelf life of polyurethane insert is maximum of 5 years

► Body is a one-piece design, configured to give maximum containment of the insert

with minimum use of material

The Standard Plate Type Valve is extremely

durable to its premium forged alloy steel body

and its unique design. It has been proven by

more than 50 years of oilfield service. To

prevent dry pistons and liners at startup, the

valve features a patented double angle

polyurethane insert that maintains cylinder

priming during pump shut-down. The precise

control of insert pre-load is accomplished with

a flat ground insert retaining plate and split

retainers. The insert can be replaced in the

field with minimum down time.

FEATURES

► Specified for all drilling operation up to and exceeding 3,500 psi

► Maximum temperature rating for the standard polyurethane insert is 170°F

► Maximum temperature rating for the Buna-N rubber insert is 225°F

► Available with Buna-N rubber or polyurethane inserts

► Shelf life of polyurethane insert is maximum of 5 years

► Shelf life of Buna-N rubber is maximum of 10 years

► Valves with rubber lipless inserts are rated for pressure up to 2,500 psi

* Note: Baker SPD Double Angle O-ring and Standard Plate Type Valves do not interchange with any

other manufacturer.

KNC PRECISION CASTING offers two style of

Four-wing guided valves and full open seats

which feature greater fluid flow through the

full open seat. The full open seat provides

easier valve maintenance and seat pulling,

in valve-over- valve fluid ends.

Innovative unibody valve design eliminates snap rings, plates or keepers providing

reduced maintenance by snap-on valve inserts and easy installation. This combination

will handle lost circulation material better than most conventional style valves and

seats while the seating angle greatly improves flow characteristics and the heavy-duty

load bearing capacity greatly improves service life.

► Material is 20CrMnMo / 20CrMnTi forging steel, carburizing and quenching, thickness is

1.5mm - 1.8mm, hardness is HRC58-62, and hardness of the core is HRC27-33.

► The 55°angle and screw thread of the valve have carburized protection, and the

whole is phosphorated. The specifications of the valve are API-4#-9#, PJ-482A, etc.

► The specifications of the seat are API-4#-9#, PJ-451, etc.

► PLUNGER PUMP VALVES & VALVE SEATS

SPM SERIES PLUNGER PUMP VALVES & VALVE SEATS

TWS 250 / TWS 400 / TWS 500LW / TWS 600 / TWS 600S / TWS 900

TWS 1300 / TWS 1600LW / TWS 2000 / TWS 2250

QWS 1000S / QWS 2500

THB 175 / THB 225 / THB 300S / THB 350 / THB 550 / THB 1050 / THB 1575

HALLIBURTON HT-400 PLUNGER PUMP VALVES & VALVE SEATS

► MUD PUMP VALVES & VALVE SEATS

NOV P-SERIES MUD PUMP VALVES & VALVE SEATS

7P-50 / 8P-80 / 9P-100 / 10P-130 / 12P-160 / 14P-220

Emsco F-SERIES MUD PUMP VALVES & VALVE SEATS

F-500 / F-800 / F-1000 / F-1300 / F-1600 / F-2200

ZIBO KNC PETROLEUM EQUIPMENT CO.,LTD-KNC PRECISION CASTING CORE BUSINESS:PLUNGER PUMP VALVES & VALVE SEATS / SPM SERIES PLUNGER

PUMP VALVES & VALVE SEATS / TWS 250 / TWS 400 / TWS 500LW / TWS 600 / TWS 600S / TWS 900 / TWS 1300 / TWS 1600LW / TWS 2000 / TWS 2250 / QWS

1000S / QWS 2500 / THB 175 / THB 225 / THB 300S / THB 350 / THB 550 / THB 1050 / THB 1575 / HALLIBURTON HT-400 PLUNGER PUMP VALVES & VALVE SEATS /

MUD PUMP VALVES & VALVE SEATS / NOV P-SERIES MUD PUMP VALVES & VALVE SEATS / 7P-50 / 8P-80 / 9P-100 / 10P-130 / 12P-160 / 14P-220 / Emsco

F-SERIES MUD PUMP VALVES & VALVE SEATS / TRIPLEXT PLUNGER PUMP / PG-05 / SPM TWS-600 / SPM TWS-600S / SPM TWS-2000 / SPM TWS-2250 / SPM

QWS-2500 / Halliburton HT-400 / TRIPLEXT MUD PUMP / NOV 12P-160 / NOV 14P-2200 / Emsco F-SERIES MUD PUMP / Emsco F-500 / Emsco F-800 / Emsco

F-1000 / Emsco F-1300 / Emsco F-1600 / Emsco F-2200 / WELL SERVICE PUMP UNITS / FRAC PUMP UNITS / SKID UNIT / CEMENTING TRUCK / CEMENTING

SKID / FRACTURING TRUCK / FRACTURING SKID / DOUBLE ENGINE DOUBLE PUMP CEMENTING TRUCK / DOUBLE ENGINE DOUBLE PUMP CEMENTING

SKID / HIGH PRESSURE FLUID CONTROL PRODUCTS / HIGH PRESSURE SWIVEL JOINTS / HIGH PRESSURE STRAIGHT PIPE / PLUG VALVE / CHECK VALVE /

SAFETY VALVE / CHOKE VALVE / GATE VALVE / UNION / INTEGRAL FITTINGS / HOSE LOOPS / PRODUCTS FOR H2S ENVIRONMENTS / COMBINATION

MANIFLODS / CHOKE MANIFOLDS / KILL MANIFOLDS / DRILLING FLUID MANIFOLDS / CEMENTING MANIFOLDS / HIGH PRESSURE GROUND TEST UNIT /

FLOW NIPPLE MANIFOLDS / POLISHED ROD STUFFING BOX TECHNICAL FEATURES / OILFIELD SERVICES / WEIR SPM / Halliburton / National Oilwell

Varco / 2500 HP / 2250 HP / 2000 HP / 600 HP / 400 HP / 350 HP / 300 HP / Cummins / CAT / DDC / Detroit Diesel / Allison / 4700 / 6610 / TRIPLEXT PLUNGER

PUMP / PG-05 / SPM TWS-600 / SPM TWS-600S / SPM TWS-2000 / SPM TWS-2250 / SPM QWS-2500 / Halliburton HT-400 / TRIPLEXT MUD PUMP / NOV 12P-160

/ NOV 14P-2200 / Emsco F-SERIES MUD PUMP / Emsco F-500 / Emsco F-800 / Emsco F-1000 / Emsco F-1300 / Emsco F-1600 / Emsco F-2200 /

WELL SERVICE PUMP UNITS / FRAC PUMP UNITS / SKID UNIT / CEMENTING TRUCK / CEMENTING SKID / FRACTURING TRUCK / FRACTURING SKID /

DOUBLE ENGINE DOUBLE PUMP CEMENTING TRUCK / DOUBLE ENGINE DOUBLE PUMP CEMENTING SKID / HIGH PRESSURE FLUID CONTROL PRODUCTS

/ HIGH PRESSURE SWIVEL JOINTS / HIGH PRESSURE STRAIGHT PIPE / PLUG VALVE / CHECK VALVE / SAFETY VALVE / CHOKE VALVE / GATE VALVE /

UNION / INTEGRAL FITTINGS / HOSE LOOPS / PRODUCTS FOR H2S ENVIRONMENTS / COMBINATION MANIFLODS / CHOKE MANIFOLDS / KILL MANIFOLDS

/ DRILLING FLUID MANIFOLDS / CEMENTING MANIFOLDS / HIGH PRESSURE GROUND TEST UNIT / FLOW NIPPLE MANIFOLDS / POLISHED ROD STUFFING

BOX TECHNICAL FEATURES / OILFIELD SERVICES / WEIR SPM / Halliburton / National Oilwell Varco / 2500 HP / 2250 HP / 2000 HP / 600 HP / 400 HP / 350 HP

/ 300 HP / Cummins / CAT / DDC / Detroit Diesel / Allison / 4700 / 6610