CORE BUSINESS
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 CHINA
KNC CHINA
KNC CHINA
KNC CHINA
Quotation ? Questions ? Need More Information ?
KNC CHINA
PETROLEUM EQUIPMEN
OILFIELD SERVICES
INDUSTRY
Phone: + 86(0)533 621 75 69 / + 86(0)533 628 22 97 / + 86(0)533 628 22 32 / + 86(0)533 777 09 31
Fax: + 86(0)533 607 50 57 / + 86(0)533 276 26 95
E-mail: mail@precisioncasting.cc
Zibo City,Shandong Province,China
© 2011 KNC PRECISION CASTING ALL RIGHTS RESERVED.
mail@precisioncasting.cc
KNC PRECISION CASTING
International Quality Certification: 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
The mainly material are 304、304L、316、316L、310S、904L、K alloy、1Cr18Ni9Ti、
3Cr24Ni7SiNRe、1Cr25Ni20Si2、4Cr25Ni35NbW、4Cr28Ni48W5Si2、GH30、GH39、
70CrMoVBRe、3Cr26Ni4MnMoRe、Incoloy 800H、Hastelloy C-276、Inconel 600、
Incoloy 800HT、Hastelloy C-4、Inconel 601、Incoloy 825、Hastelloy B-2、Inconel 625、
Incoloy 901、Hastelloy C-22、Inconel 718、Incoloy 926、Hastelloy B、Inconel X-750、
GH4169、Nimonic 80A、3J53、 GH2132、Monel 400、4J29、GH4145、Monel k-500、
4J36、GH3128、254SMO/F44、Invar 36、GH3030、A-286
OTHER BUSINESS
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.
Stem-guided Valves & Cross-arms Seats
Three-wing Valves & Full open Seats
Valve Parts
Instruments & Pumps
Hardware
Food Machinery
Auto Parts
Non-Standard Parts
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.
Double Angle O-ring Valve
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 
Standard Plate Type Valve
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.
Four-wing Valves & Full open Seats
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.
Hydraulic Valve Seat Puller and Head
KNC PRECISION CASTING offering all kinds
hydraulic valve seats puller from API4#,
API5#, API6#, API7#, API8# for stem cross
arms and full open valve seats.

The components are made from high quality cast steel for impact and wear resistance.
To eliminate danager to fluid ends coused by removing valve seats with a cutting
torch and to reduce the posibility of personal injury is our design goal.
Rough Valves & Seats
KNC PRECISION CASTING supplies forged rough and/or semi-manufactured valves & Seats to manufacturers in the United States.
Quotation ? Questions ? Need More Information ?
 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