Product Overview
This curated selection of Honghua HHF 800 pulsation dampener replacement parts covers all critical components of the NB800M series, including the KB-45 pulsation dampener (NB800M.27.00) and JA-3 shear pin safety valve (NB800M.28.00). The lineup includes air rubbers, shell assemblies, gaskets, pressure gauges, check valves, shear pins, piston assemblies, and all necessary fasteners (ANSI/ASME bolts and nuts) to support routine maintenance, emergency repairs, and full component overhauls. Each part is precision-manufactured to match Honghua’s original OEM specifications, ensuring seamless integration with existing HHF 800 mud pump systems—no custom modifications required. These parts are built to withstand high-pressure mud flow, abrasive drilling fluids, and extreme field conditions, making them the reliable choice for maintaining pulsation control and safety.
Core Functional Specifications
These components are engineered to deliver critical performance for the Honghua HHF 800 mud pump: the KB-45 pulsation dampener (NB800M.27.00) reduces mud pump pressure pulsations by up to 70%, stabilizing pressure within the 0—25MPa (0—3630psi) range (matched to the Y-60 double-scale shock-proof pressure gauge); the air rubber (NB800M.27.03.00) maintains elastic performance at temperatures ranging from -20°F to 180°F, with a service life of 2,000+ operating hours under standard conditions; the JA-3 shear pin safety valve (NB800M.28.00) triggers at 28MPa (4060psi) to prevent overpressure damage, with shear pins (NB800M.28.11) designed to break consistently at rated pressure for reliable safety protection; check valves (JZR3-L8) prevent mud backflow with a response time of less than 0.1 seconds, protecting the dampener from contamination.
Structural Design Features
Every part is built for durability, safety, and easy maintenance: the pulsation dampener shell assembly (NB800M.27.04.00) is fabricated from high-strength carbon steel with a corrosion-resistant coating, capable of withstanding maximum working pressure of 25MPa and burst pressure of 50MPa; the air rubber (NB800M.27.03.00) features a multi-layered rubber compound with reinforced fabric inserts to resist abrasion and tearing from drilling mud; shear pins (NB800M.28.11) are made from heat-treated alloy steel for consistent breakage at rated pressure, ensuring reliable overpressure protection; gaskets (R39, NB800M.27.01) are constructed from oil-resistant, high-compression elastomers to prevent mud and air leaks; and modular component design allows for quick replacement of wear items (e.g., shear pins, gaskets) without full disassembly, reducing repair time by up to 60%.
Applicable Operating Conditions
These Honghua HHF 800 pulsation dampener parts are certified for use in all major drilling scenarios: onshore land rigs (desert, arctic, and temperate climates), offshore platform and jack-up rigs (saltwater corrosion, high humidity), directional drilling, and high-pressure mud pumping operations. They are resistant to drilling mud, hydraulic fluids, and abrasive formation cuttings, and operate reliably in temperature ranges from -20°F to 180°F. Whether for routine maintenance, emergency overpressure repairs, or dampener air bag replacement, these parts perform consistently in the harshest field conditions, ensuring compliance with drilling safety standards.
We supply the following spare parts:
| 14、NB800M.27.00 KB-45 Pulsation Dampener | ||
| S.N | Drawing no. | Item |
| 1 | NB800M.27.01 | Gasket ring: R39 |
| 2 | NB800M.27.02 | Base plug |
| 3 | NB800M.27.03.00 | Air rubber |
| 4 | NB800M.27.04.00 | Shell assembly |
| 5 | NB800M.27.05 | Cover |
| 6 | JZR3-L8 | Check valve (Xinhua hydraulic device, Fenghua) |
| 7 | NB800M.27.06.00 | Cover, pressure gauge |
| 8 | NB800M.27.07 | Connector: NPT1/4 |
| 9 | Y-60 | Double scale shock proof pressure gauge: 0—25MPa (0—3630psi) |
| 10 | NB800M.27.08 | washer |
| 11 | NB800M.27.09 | T-joint: NPT1/4 |
| 12 | NB800M.27.10.00 | Air discharge valve |
| 13 | NB800M.27.11.00 | Suction hose assembly, pulsation dampener |
| 15、NB800M.28.00 JA-3 shear pin safety valve | ||
| S.N | Drawing no. | Item |
| 1 | NB800M.28.01 | Connector |
| 2 | NB800M.28.02 | Retainer ring |
| 3 | NB800M.28.03.00 | Piston assembly |
| 4 | NB800M.28.04 | Valve body |
| 5 | NB800M.28.05 | Piston rod |
| 6 | NB800M.28.06 | Buffer mat |
| 7 | NB800M.28.07 | Elastic cylinder pin |
| 8 | NB800M.28.08 | Lock spring |
| 9 | NB800M.28.09 | Shield |
| 10 | NB800M.28.10 | Shear pin plate |
| 11 | NB800M.28.11 | Shear pin |
| 12 | NB800M.28.12 | Instruction plate |
| 13 | NB800M.28.13 | Pin shaft |
| 14 | NB800M.28.14 | Steel wire retainer ring |
| 15 | NB800M.28.15 | Name plate |
| 16 | GB/T91-2000 | Pin: 4×25 |
| 17 | ANSI/ASME B 18.6.3-2003 | Bolt: 8 (0.164) -32×5/8 |
| 18 | ANSI/ASME B 18.6.3-2003 | Nut: 8 (0.164) -32 |
| 19 | ANSI/ASME B18.2.1-1996 | bolt: 3/8-16×4 3/8 |
| 20 | ANSI/ASMEB 18.2.2-1987(R1999) | Nut: 3/8-16 |
| 21 | ANSI/ASME B 18.6.3-2003 | Bolt: 5 (0.125) -40×5/16 |
Field Failure Repair Case Studies
Case 1: Air Rubber Failure Causing Pressure Pulsations
A land drilling rig’s Honghua HHF 800 mud pump experienced excessive pressure pulsations, leading to downstream hose damage and reduced drilling efficiency. Inspection revealed a torn air rubber (NB800M.27.03.00) due to prolonged exposure to abrasive mud. Technicians replaced the air rubber, recharged the dampener to 5MPa (725psi) preload, and recalibrated the pressure gauge—restoring pulsation control and eliminating hose damage, with the pump returning to full operation in 2 hours.
Case 2: Shear Pin Breakage from Overpressure
An offshore rig’s HHF 800 mud pump triggered the JA-3 shear pin safety valve (NB800M.28.00) during a mud flow blockage, halting operations. The shear pin (NB800M.28.11) had broken as designed to prevent overpressure damage. Crews replaced the shear pin, cleared the blockage, and tested the safety valve to ensure it triggered at the rated 28MPa—restoring safe operation in 1.5 hours and avoiding costly damage to the mud pump and downstream equipment.
Case 3: Gasket Leakage Contaminating Dampener
A directional drilling team noticed air and mud leaks from the KB-45 pulsation dampener (NB800M.27.00), reducing its pressure stabilization performance. The R39 gasket ring (NB800M.27.01) had degraded from chemical exposure to drilling mud. Replacing the gasket, cleaning the dampener shell, and re-torquing the cover resolved the leak, restoring pulsation reduction to 70% and preventing further contamination of internal components.
Frequently Asked Questions (FAQ)
| Question | Answer |
| Are these parts compatible with the Honghua HHF 800 mud pump’s KB-45 dampener and JA-3 safety valve? | Yes, all parts are precision-manufactured to match Honghua’s OEM specifications for the NB800M.27.00 KB-45 pulsation dampener and NB800M.28.00 JA-3 shear pin safety valve, ensuring a perfect fit with no modifications needed for installation. |
| Do these parts meet international safety and quality standards for drilling equipment? | Absolutely. All components comply with API 7K standards for mud pump accessories, ISO 9001 quality certifications, and relevant ANSI/ASME (fasteners) and GB/T (pins) standards, ensuring safe, reliable performance and compliance with global drilling regulations. |
| How often should I replace the air rubber in the KB-45 pulsation dampener? | Under standard operating conditions, the air rubber (NB800M.27.03.00) should be inspected every 500 operating hours and replaced every 2,000 operating hours, or immediately if cracks, bulges, or significant wear (10% thickness reduction) are detected. |
Procurement Guidance
This Honghua HHF 800 mud pump pulsation dampener parts list is your definitive resource for sourcing high-quality, OEM-compatible components that ensure the safety, efficiency, and longevity of your mud pump’s pressure stabilization system. The KB-45 pulsation dampener and JA-3 safety valve are critical to protecting your equipment and maintaining drilling productivity—investing in these premium parts reduces unplanned downtime, avoids costly equipment damage, and ensures compliance with drilling safety standards.
