Introduction
The HHF-1300 Pump Discharge Manifold Parts are specifically engineered to match the Honghua HHF-1300 mud pump, a critical piece of equipment in oil and gas drilling operations. These parts serve as the core component of the mud pump’s discharge system, responsible for collecting high-pressure drilling mud from the pump’s liquid end, filtering impurities, stabilizing discharge pressure, and guiding the mud to the wellbore efficiently. Designed in strict accordance with the original equipment specifications (OEM standards), each part—from the suction damper to the discharge filter screen, assistant pipes, and auxiliary components—ensures seamless compatibility and reliable performance, directly addressing the pain points of drilling teams: frequent part wear, pressure fluctuations, and unplanned downtime caused by mismatched or low-quality replacement parts.
Structural Features
1. Rational Structural Design
The HHF-1300 Pump Discharge Manifold Parts adopt an integrated modular design, with each component connected by flanges (P/N: 11-3161-25, 5 1/8*35) and stud bolts, making installation and disassembly quick and convenient. The flange connection adopts a sealed structure with gaskets (such as R44, R27, R35 gaskets), which has good sealing performance and can withstand high pressure up to 60MPa without leakage. The discharge elbow and discharging cross are designed with a smooth inner wall, reducing the resistance of mud flow and avoiding mud accumulation and scaling.
2. High Wear Resistance and Pressure Resistance
Key structural components such as the flange, discharge elbow, and stud bolt are made of high-strength alloy steel,经过 heat treatment and surface anti-corrosion treatment, which not only improves wear resistance (wear rate is reduced by 25% compared with ordinary carbon steel parts) but also enhances corrosion resistance, adapting to the corrosive environment of drilling mud (including acid-base mud). The O-ring (P/N: B34521-165-700-69, 165*7.0G) is made of high-temperature and high-pressure resistant rubber, with a service life of more than 800 working hours, ensuring the sealing performance of the connection part.
3. Precise Dimensional Control
All parts are processed by CNC machine tools, with dimensional accuracy controlled within ±0.02mm, fully matching the original HHF-1300 mud pump interface. The stud bolts (such as 1 1/2-8UN(12UNF)-2A*128 and 1 1/16-8UN-2A*170) and nuts are processed in strict accordance with thread standards, ensuring firm connection and no loosening during high-pressure operation. The pressure gauge seat and bushing are designed with precise fit, ensuring the accuracy of pressure measurement (error ≤±1%).
Maintenance and Care Recommendations
1. Daily Inspection (Before and After Operation)
Before starting the mud pump, check the connection status of the stud bolts and nuts—ensure they are tightened in a diagonal order (torque: 350~400 N·m) to avoid leakage caused by uneven force. Check the O-ring and gasket for aging, cracking, or deformation; if any damage is found, replace them immediately (it is recommended to keep a certain number of spare parts on site). Check the pressure gauge for normal zero calibration and clear reading; if the pointer is stuck or inaccurate, disassemble and calibrate or replace it.
After operation, clean the filter screen assembly with clean water to remove residual mud and impurities, avoiding blockage that affects the next operation. Check the diaphragm of the suction damper for deformation or damage; if the diaphragm loses elasticity, replace it in time to ensure the pressure stabilization effect.
2. Regular Maintenance (Per 500 Working Hours)
Disassemble the discharge manifold components, clean the inner wall of the discharge elbow and discharging cross to remove scale and mud accumulation. Check the wear of the flange surface; if there are scratches or deformations, grind and repair them to ensure the sealing performance. Apply an appropriate amount of sealant (P/N: 11-3161-0546 or 11-3161-2502, 15ml per use) to the connection part when reassembling to enhance sealing.
Check the KB-75 damper for air leakage; if the pressure compensation effect is reduced, replenish air to the specified pressure (80% of the mud pump’s working pressure). Replace the gasket and O-ring regularly (every 500 working hours) to avoid sudden failure caused by aging.
3. Long-Term Storage and Maintenance
If the parts are not used for a long time, clean them thoroughly, apply anti-rust oil to the metal surface, and store them in a dry, ventilated warehouse to avoid corrosion caused by moisture. The diaphragm and O-ring should be stored in a cool, dark place to avoid aging caused by direct sunlight. Before reuse, check all parts for damage or corrosion, and replace any unqualified parts.
We supply the following spare parts:
| HHF-1300 Suction Damper | ||
| No. | P/N(HHF-1300/1600) | Description |
| 1 | 11-3161-0533-01 | Diaphragm |
| 2 | 11-3161-0533-02 | End cover |
| HHF-1300 Discharge Filter Screen and Assistant Pipe (1) | ||
| No. | P/N(HHF-1300/1600) | Description |
| 1 | 11-3161-2401-00 | Filter screen assembly |
| 2 | B34521 -165-700-69 | O ring, 165*7.0G |
| 3 | 11-3161-2402 | Discharge Elbow |
| 4 | 11-3161-25 | Flange 5 1/8*35 |
| 5 | 11-3161-23 | Gasket, R44 |
| 6 | 11-3161-2403 | Stud Bolt, 1 1/2-8UN(12UNF)-2A*128 |
| 7 | 11-3161-2404 | Nut, 1 1/2-8UN-2B (SPL) |
| 8 | 11-3161-1510 | Pressure gauge, 0~60MPa(0~8700PSi) |
| 9 | 11-3161-2201-03 | Bushing |
| 10 | 11-3161-2201-00 | Seat, pressure gauge |
| 11 | 11-3161-2206 | Gasket, R27 |
| 12 | 11-3161-2203-00 | Discharging cross |
| 13 | 11-3161-0546 | Sealant |
| 14 | 11-3161-2204 | Stud Bolt, 1 1/16-8UN-2A*170 |
| 15 | 11-3161-2205 | Nut, 1 1/16-8UN-2B (SPL) |
| 16 | 11-3161-2202-00 | Pipe, relief valve |
| R1 | 11-3161-2800 | Relieve valve JA-3 |
| R2 | 11-3161-2700 | KB-75 damper |
| HHF-1300 Discharge Filter Screen and Assistant Pipe (2) | ||
| No. | P/N(HHF-1300/1600) | Description |
| 1 | 11-3161-2401-00 | Filter screen assembly |
| 2 | B34521 -165-700-69 | O ring 165*7.0G |
| 3 | 11-3161-2402 | Discharge elbow |
| 4 | 11-3161-25 | Flange, 5 1/8*35 |
| 5 | 11-3161-23 | Gasket R44 |
| 6 | 11-3161-2403 | Stud Bolt, 1 1/2-8UN(12UNF)-2A*128 |
| 7 | 11-3161-2404 | Nut, 1 1/2-8UN-2B (SPL) |
| 8 | 11-3161-2501 | Pressure gauge, union type, 0~6000PSi |
| 9 | 11-3161-2202-1 | Seat, pressure gauge |
| 10 | 11-3161-2204-1 | Gasket, R35 |
| 11 | 11-3161-2203-1 | Discharge cross |
| 12 | 11-3161-2502 | Sealant |
| 13 | 11-3161-2205-1 | Stud Bolt, 1 1/8-8UN(12UNF)-2A*90 |
| 14 | 11-3161-2206-1 | Nut, 1 1/8-8UN-2B (SPL) |
| 15 | 11-3161-32-1 | Flange, blind, 5 1/8*35 |
| R2 | 11-3161-2700 | KB-75 damper |
On-Site Fault Maintenance Cases
The following are three real on-site fault cases of HHF-1300 Pump Discharge Manifold Parts, providing practical solutions for maintenance technicians to quickly solve problems and reduce downtime:
Case 1: Discharge Pressure Fluctuation
Fault Phenomenon: During the drilling operation, the discharge pressure of the HHF-1300 mud pump fluctuated significantly (fluctuation range >±10%), accompanied by abnormal noise from the discharge manifold, and the drilling efficiency decreased.
Cause Analysis: After inspection, the KB-75 damper (P/N: 11-3161-2700) was found to have air leakage, resulting in the loss of pressure compensation function; at the same time, the filter screen assembly was blocked by mud impurities, leading to uneven mud flow.
Solution: Replaced the KB-75 damper, replenished air to the specified pressure (48MPa, 80% of 60MPa), and cleaned the filter screen assembly with high-pressure water. After reassembly, the discharge pressure fluctuation range was controlled within ±5%, and the abnormal noise disappeared, restoring normal operation.
Case 2: Flange Connection Leakage
Fault Phenomenon: During the high-pressure operation of the mud pump, mud leakage occurred at the flange connection of the discharge elbow (P/N: 11-3161-2402), accompanied by a slight drop in discharge pressure, which posed a safety hazard to on-site operations.
Cause Analysis: The R44 gasket (P/N: 11-3161-23) at the flange connection was aged and cracked, and the stud bolts were slightly loose due to long-term vibration, resulting in poor sealing.
Solution: Stopped the pump, disassembled the flange, replaced the R44 gasket with a new one, and tightened the stud bolts in a diagonal order (torque: 380 N·m). After restarting, there was no leakage at the connection, and the discharge pressure returned to normal.
Case 3: Pressure Gauge No Reading
Fault Phenomenon: The pressure gauge (P/N: 11-3161-1510, 0~60MPa) of the discharge manifold had no reading during operation, making it impossible to monitor the discharge pressure, which could easily lead to overpressure damage to the pipeline.
Cause Analysis: Disassembled the pressure gauge and found that the pressure gauge seat (P/N: 11-3161-2201-00) was blocked by mud impurities, and the bushing (P/N: 11-3161-2201-03) was worn, resulting in poor contact between the pressure gauge and the mud.
Solution: Cleaned the pressure gauge seat and bushing, replaced the worn bushing, and reinstalled the pressure gauge. After calibration, the pressure gauge could display the reading normally, and the pressure monitoring function was restored.
FAQ (Frequently Asked Questions)
| Question | Answer |
| Are the HHF-1300 Pump Discharge Manifold Parts compatible with HHF-1600 mud pumps? | Yes, all parts are marked with P/N (HHF-1300/1600), which means they are fully compatible with both Honghua HHF-1300 and HHF-1600 mud pumps. You can use them interchangeably without any modification, which helps reduce your inventory cost of spare parts. |
| What is the service life of the key components (such as diaphragm and filter screen assembly)? | Under normal working conditions (complying with the applicable working conditions and maintenance requirements), the diaphragm (P/N: 11-3161-0533-01) has a service life of more than 800 working hours, and the filter screen assembly (P/N: 11-3161-2401-00) has a service life of more than 1,000 working hours. The actual service life may vary slightly according to the mud quality and operation intensity. |
| How to confirm whether the parts are genuine and meet the OEM standards? | All HHF-1300 Pump Discharge Manifold Parts are manufactured in accordance with OEM standards, and each part is marked with a unique P/N (consistent with the part number listed in the parts list). In addition, we provide a pressure test report for each batch of parts, which records the pressure test data (80% of the rated pressure) and dimensional inspection results, ensuring that the parts meet the authoritative standards and can be used with confidence. |
Procurement Guide
The HHF-1300 Pump Discharge Manifold Parts are the key to ensuring the stable operation of the Honghua HHF-1300/1600 mud pump. We provide a complete set of genuine parts, including all components listed in the parts list, with strict quality control and authoritative technical support. Whether you need to purchase individual parts (such as diaphragm, filter screen assembly, or KB-75 damper) or a complete set of discharge manifold parts, we can meet your customized procurement needs.
All parts are manufactured in compliance with industry standards and OEM specifications, with precise dimensions, high wear resistance, and reliable performance—effectively solving the pain points of frequent part replacement, high maintenance costs, and unplanned downtime. We provide detailed technical parameters and maintenance guidance for each part to help you quickly complete installation and maintenance, improve drilling efficiency and equipment service life. If you have any procurement needs or technical questions, please contact us, and we will provide you with professional solutions and high-quality products.
