Lower Mud Pump Valve Rod Guide Fluid End GH3161-05.05.00 NB800M.05.28.00 Honghua

Product Specification

Honghua HHF1600 Mud Pump Valve Rod Guide (Lower), Mud Pump Fluid End GH3161-05.05.00 NB800M.05.28.00

Honghua HHF1600 Mud Pump Valve Rod Guide (Lower), Mud Pump Fluid End GH3161-05.05.00 NB800M.05.28.00 , Valve Rod Guide (Lower) was used in Mud Pump Fluid End.

The mud pump valve rod guide (lower), which is installed in the chamber of the cylinder, acts as a centring and positioning suction valve body assembly. It consists of a guide body and an inner sleeve, which is inserted into the guide body. The material of the guide body is ZG35CrMo, and the inner sleeve is carburized and hardened by 20CrMnTi. Check the inner sleeve of the valve rod guide once a week. Replace it if there is obvious wear (the gap between the valve rod and guide is more than 3mm), so as not to lose the guiding function of the guide and accelerate the wear of the valve.

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.

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.

History
Over time, the inner diameter of the valve guide 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 the valve guides 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.[1] Since the reaming process leaves the valve guide 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.

The clearance between the inner diameter of the valve guide 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.
 

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.

Mud Pump Parts Model We Can Do

FAQ
1) How can I place order?
A: You can contact us by email about your order details, or place order on line.

2) How can I pay you? 
A: After you confirm our PI, we will request you to pay. T/T is the most usual ways we are using.

3) What's the order procedure?
A: First we discuss order details, production details. Then we issue you an PI for your confirmation. You will be requested to do pr-e paid full payment or deposit before we go into production. After we get the deposit, we start to process the order. We usually need 15-25 days if we don't have the items in stock. Before production has been finished, we will contact you for shipment details, and the balance payment. After payment has been settled, we start to prepare the shipment for you.

4) How do you take care when your clients received defective products?
A: replacement. If there are some defective items, we usually credit to our customer or replace in next shipment.

5) How do you check all the goods in the production line?
A: We have spot inspection and finished product inspection. We check the goods when they go into next step production procedure.

More customer view:37-EMSCO F-800 FLUID END-yindapump.com.pdf