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JZR3-L8 Needle Valve Mud Pump Spares For Triplex Mud Pump API 7K Certification > Mud Pump Spare Parts > Mud Pump Spare Parts

  • JZR3-L8 Needle Valve Mud Pump Spares For Triplex Mud Pump API 7K Certification
JZR3-L8 Needle Valve Mud Pump Spares For Triplex Mud Pump API 7K Certification

JZR3-L8 Needle Valve Mud Pump Spares For Triplex Mud Pump API 7K Certification

  • Place of Origin: China
  • Brand Name: YINDA
  • Certification: API 7K
  • Model Number: Triplex Mud Pump
  • Description: JZR3-L8 Needle Valve Mud Pump Spares For Triplex Mud Pump API 7K Certification
  • Enquiry

Detail Information

Usage: Drill Rig Application: Conveying Mud And Flushing Fluids
Structure: piston Pump Standard Or Nonstandard: Standard
Type: Mud Pump Product Name: Mud Pump
Oem: Applicable Condition: New
High Light:

mud pump expendables,needle control valve


Product Description

JZR3-L8 Needle Valve, Mud Pump Spares mud pumps for drilling rigs,

JZR3-L8 Needle Valve, Mud Pump Spares
JZR3-L8 Needle Valve were use in Mud Pump Parts.with connection the pressure gauge, used in BOMCO Mud pump parts; Such as the F800;F1000;F1300;F1600;F200HL.

An instrument JZR3-L8 needle valve uses a tapered pin to gradually open a space for fine control of flow. The flow can be controlled and regulated with the use of a spindle. A needle valve has a relatively small orifice with a long, tapered seat, and a needle-shaped plunger on the end of a screw, which exactly fits the seat.

As the screw is turned and the plunger retracted, flow between the seat and the plunger is possible; however, until the plunger is completely retracted, the fluid flow is significantly impeded. Since it takes many turns of the fine-threaded screw to retract the plunger, precise regulation of the flow rate is easily possible.

JZR3-L8 needle Advantages

  • The virtue of the JZR3-L8 needle valve is from the vernier effect of the ratio between the needle's length and its diameter, or the difference in diameter between needle and seat.
  • A long travel axially (the control input) makes for a very small and precise change radially (affecting the resultant flow).
  • JZR3-L8 Needle valves may also be used in vacuum systems, when a precise control of gas flow is required, at low pressure,[1] such as when filling gas-filled vacuum tubes, gas lasers and similar devices.




JZR3-L8 Needle valves are usually used in flow-metering applications, especially when a constant, calibrated, low flow rate must be maintained for some time, such as the idle fuel flow in a carburettor.

Note that the float valve of a carburettor (controlling the fuel level within the carburettor) is not a needle valve, although it is commonly described as one. It uses a bluntly conical needle, but it seats against a square-edged seat rather than a matching cone. The intention here is to obtain a well-defined seat between two narrow mating surfaces, giving firm shutoff of the flow from only a light float pressure.
JZR3-L8 Needle valves are also commonly used to provide shut off for the pressure gauge or on applicators to shut off the supply of NH3 to the knives in Anhydrous Ammonia (NH3) applications.


Mud Pump Parts Model We Can Do

BOMCO F-500 F-800 F-1000 F-1300 F-1600 F-1600HL F-1600L F-2200HL
Hong Hua HHF-500 HHF-800 HHF-1300 HHF-1600 3NB-1600F 5NB-1600 5NB-2400
HRSB RSF-1300 RSF-1600
RG RGF-800 RGF-1000 RGF-1300 RGF-1600
Lanzhou 3NB1000C 3NB1300C 3NB1600F 3NB1600L
EMSCO F-500 F-800 F-1000 F-1300 F-1600 FD-1000 FC-2200 FB-1300
Gardner Denver PAH P7 P8/9 P10/11
National 7-P-50 8-P-80 9-P-100 10-P-130 12-P-160 14-P-200 14-P-220
Oilwell A-850-PT A-1100-PT A-1400-PT A-1700-PT
TSC WF-500 WF-800 WF-1000 WF-1300 WF-1600 WF-2000 WF-2200
IDECO T-500 T-800 T-1000 T-1300 T-1600
RUSSIA UNBT-1180L UNBT-950A UNB-600

Since flow rates are low and many turns of the valve stem are required to completely open or close, needle valves are not used for simple shutoff applications.

Since the orifice is small and the force advantage of the fine-threaded stem is high, JZR3-L8 needle valves are usually easy to shut off completely, with merely "finger-tight" pressure. The spindle and/or seat of a needle valve, especially one made from brass, are easily damaged by excessive turning force when shutting off the flow.

Small, simple needle valves are often used as bleed valves in water-heating applications.Unlike a ball valve or valves with a rising stem, it is not easy to tell from examining the handle position whether the valve is open or closed.

JZR3-L8 Needle Valve Mud Pump Spares For Triplex Mud Pump API 7K Certification 0



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