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China Liner Lock for Mud Pump - High-Quality Suppliers & Factory Direct Solutions for Optimal Performance
Product Specifications
| Application | Drilling mud pump fluid end |
| Working Pressures | 5000 PSI (35 MPa), 7500 PSI (51.7 MPa) |
| Temperature Rating | -20°C to 120°C |
| Material | 35CrMo (Equivalent to AISI 4135 or AISI 4140) |
| Service Life | 5,000 hours ~ 10,000 hours or more, depending on the operating conditions and drilling conditions |
| Extended Life | With proper maintenance and regular liner replacements, the liner lock thread body can last up to 15,000 hours |
| Third Party Witness & Inspection Report | Bureau Veritas (BV), CCS, ABS, SJS etc. |
Product Features
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Forged 35CrMo alloy steel construction, precision heat-treated and machined to deliver exceptional strength, wear resistance, and corrosion protection — ideal for harsh drilling mud environments.
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Reliable liner retention under cyclic pressure, with metal-to-metal locking that secures the liner in the fluid cylinder, preventing movement or vibration even under high-frequency piston strokes.
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Quick and safe maintenance — thread-in installation enables easy liner insertion or removal; compatible with all major Chinese mud pump models (BOMCO, LSNOV, HONGHUA/RG/RONGSHENG) and overseas pumps.
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Simple structure for easy installation and maintenance, allowing for quick liner replacement without disassembling the entire fluid end — reducing downtime and improving operational efficiency.
OEM Equivalent / Compatible Product Part Numbers
Our valve body is manufactured in full accordance with original drawings and are directly interchangeable with the following part numbers:
| OEM Brand | Pump Models | Compatible Part Numbers |
| BOMCO | F1300 / F1600 / F1600L / F1600HL | AH36001-05.18.00 AH130101051500 |
| F2200HL | AH220201051200 | |
| HONGHUA / HH | F1300 / F1600 / F1600L / F1600HL | GH3161-05.17.00 |
| EMSCO / Mud King | FB1300 / FB1600 | 6316-0367-00 |
| IDECO | T500 / T800 / T1000 | 551-405-05 |
| T1300 / T1600 | 551-105-03 | |
| National / LSNOV | 7P50 | 1294165 |
| 8P80 | 1291165 | |
| 9P100 | 1293165 | |
| 10P130 | 1290165 | |
| 12P160 | 1292165 | |
| 10P130 L Shaped | 6495 + 6595 | |
| 12P160 L Shaped | 6476 + 6576 |
ⓘ Contact & Compatibility Notice
Contact for more details about the valves used for HONGHUA, RG, RONGSHENG, EMSCO, and LSNOV.All product names, trademarks, and part numbers are used for identification purposes only and are the property of their respective owners. We are an authorized and recognized supplier. If you are looking for specific mud pump component part numbers, please contact our sales team for detailed references or technical support.
Product Details
Frequently Asked Questions (FAQ)
Q
What is a liner lock and what is its primary function in a mud pump?
A liner lock is a threaded retention component installed in the fluid end of a drilling mud pump. Its primary function is to securely hold the liner in place within the fluid cylinder, preventing movement or vibration caused by high-frequency piston strokes and cyclic pressure fluctuations during drilling operations.
Q
What material is used to manufacture this liner lock, and why?
The liner lock is forged from 35CrMo alloy steel, equivalent to AISI 4135 or AISI 4140. This material is selected for its outstanding strength, wear resistance, and corrosion protection, making it well-suited for the demanding conditions of drilling mud environments, including abrasive fluids and high cyclic pressures.
Q
What is the expected service life of the liner lock?
Under standard operating conditions, the liner lock has a service life of 5,000 to 10,000 hours or more. With proper maintenance and regular liner replacements, the liner lock thread body can achieve an extended service life of up to 15,000 hours.
Q
Which mud pump brands and models is this liner lock compatible with?
This liner lock is compatible with a wide range of major mud pump brands, including BOMCO (F1300, F1600, F1600L, F1600HL, F2200HL), HONGHUA/HH, EMSCO/Mud King (FB1300, FB1600), IDECO (T500–T1600), and National/LSNOV (7P50 through 12P160, including L-shaped variants). Please contact our sales team for compatibility with HONGHUA, RG, RONGSHENG, and other models.
Q
Does this liner lock come with third-party inspection certification?
Yes. Third-party witness inspection reports are available from recognized international certification bodies, including Bureau Veritas (BV), CCS, ABS, and SJS, ensuring full traceability and quality assurance for critical drilling applications.
Q
Can the liner be replaced without disassembling the entire fluid end?
Yes. The thread-in design of this liner lock allows for quick and straightforward liner insertion or removal without the need to disassemble the entire fluid end. This significantly reduces rig downtime, lowers maintenance costs, and improves overall operational efficiency during liner replacement procedures.