| Categories | Mud Pump Parts |
|---|---|
| Brand Name: | LONGWELL |
| Model Number: | Oil Drilling Mud Pump |
| Certification: | API-7K |
| Place of Origin: | China |
| MOQ: | 1 PCS |
| Packaging Details: | Plywood case/Iron pallet |
| Payment Terms: | T/T 30%DP, balabce before ship |
| Supply Ability: | 1000 PCS per Month |
| Durability: | Long-lasting |
| Temperature Tolerance: | -60℃~100℃ |
| Metal Material: | high alloy steel |
| Compatibility: | Fits most mud pumps |
| Hardness: | High |
| Model: | Honghua HHF1600 |
| Material: | High-quality Steel |
| Quality: | High |
| Fuel: | Electric |
| BOMCO: | F800/1000/1300/1600/1600HL |
| HONGHUA: | 3NB-800/1000/1300/1600F |
| HRSB: | RS-F800/1000/1300/1600 |
| INGZHOU: | QF-1300/1600 |
| LS-NOW: | 3NB1300C/1600 |
| NOV: | 12-P-160 14-P-220 |
| WeatherFord: | MP-10/16 |
| GD: | PZ-7/8/9/10/11 |
| EMSCO: | FB-1300/1600 |
| RUSSIAN: | UNBT-950/1180L UNB-600 8T650 |
Honghua HHF1600 Mud Pump Valve Guide Upper is installed in the
inner chamber of the hydraulic cylinder ,for centering and
positioning the suction valve body assembly.
Upper and lower valve guides are important parts for the fluid end
of mud pump in oil drilling. The upper type acts as a connector of
valve spring and valve cover inside the hydraulic cylinder. It
plays a guiding role in valve operation. The lower one is a
connector of valve spring and hydraulic cylinder inside the
cylinder. It has the function of fixing and guiding the valve
operation.
The material of Honghua HHF1600 Mud Pump Valve Guide Upper way is
ZG35CrMo, and the inner sleeve is treated by 20CrMnTi carburization
and quenching.

In most types of reciprocating engines, a valve guide is provided
for each poppet valve in the cylinder head. Along with the valve
spring, it serves to positively locate the valve so that it may
make proper contact with the valve seat. A valve guide is a
cylindrical piece of metal, pressed or integrally cast into the
cylinder head, with the valve reciprocating inside it.
Guides also serve to conduct heat from the combustion process out
from the exhaust valve and into the cylinder head where it may be
taken up by the cooling system. Bronze is commonly used, as is
steel; a balance between stiffness and wear on the valve is
essential to achieve a useful service life.
The clearance between the inner diameter of Honghua HHF1600 Mud
Pump Valve Guide Upper and the outer diameter of the poppet valve
stem is critical for the proper performance of an engine. If there
is too little clearance, the valve may stick as oil contaminants
and thermal expansion become factors. If there is too much
clearance, the valve may not seat properly and excessive oil
consumption can occur.

Over time, the inner diameter of Honghua HHF1600 Mud Pump Valve
Guide Upper and the outer diameter of the valve stem may become
worn. In the 1980s, many U.S. production engine remanufacturers
began reaming valve guides, rather than replacing them, as part of
their remanufacturing process.
They found that by reaming all Honghua HHF1600 Mud Pump Valve Guide
Uppers in a head to one standard size (typically 0.008 in.
diametrically oversized), and installing remanufactured engine
valves having stems that are also oversized, a typical engine head
can be remanufactured in much less time.
Since the reaming process leaves Honghua HHF1600 Mud Pump Valve
Guide Upper with a much better surface finish and shape than
typical replacement guides, and since the oversize valves often
have chrome plated stems, remanufacturers also discovered that
valve train warranty issues are virtually eliminated.
Studies have been conducted which show that through the proper
selection of the reamer and reaming process, valves guides can be
quickly and efficiently reamed to a consistently repeatable size.
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