Product Introduction
This complete product line includes full-series mud pump valves, valve seats, valve springs, valve inserts, valve cages and special valve pullers for Novatech, Wirth, Wheatley, Western and Wilson mud pumps, covering all listed model-specific part numbers including NF series, ND series, 19000 series, 5710 series and customized hydraulic/mechanical seat removal components. Each part is processed by precision CNC machining, undergoes 100% pressure and wear resistance testing, and is designed for direct installation without on-site modification, suitable for daily inspection, routine replacement, preventive maintenance and full fluid end overhaul of various oilfield mud pumps.
Core Function Specifications
Every valve and matching component in this catalog is engineered to withstand extreme harsh oilfield drilling conditions, with verified authoritative performance indicators:
- High-Pressure Sealing & Flow Control: Precision-matched valve and seat assemblies achieve zero-leakage sealing under rated working pressure up to 40MPa, effectively preventing mud backflow.
- Stable High-Frequency Action: High-fatigue-resistance springs ensure smooth, consistent opening and closing of valves under 60-90SPM continuous pump operation.
- Wear-Resistant Mud Scouring Resistance: High-hardness alloy inserts and seats resist long-term erosion of sand-containing high-solid-content mud, reducing wear speed.
- Precision Positioning & Guidance: Standard valve cages provide stable valve guiding, avoiding offset and ensuring even stress distribution.
- Quick Disassembly & Replacement: Matching special valve pullers simplify on-site disassembly and installation, cutting maintenance time significantly.
Structural Characteristics
These mud pump valve components feature optimized structures suitable for oilfield field maintenance and long-term durable operation:
- Integral & Segmented Valve Design: Compatible with monoblock and segmented fluid end valves, covering all mainstream mud pump fluid end structures.
- Hydraulic & Mechanical Seat Compatibility: Dual-design parts adapt to both hydraulic and mechanical seat removal systems of Wirth TPK series pumps, with strong universality.
- Precision Matching Structure: Valve, seat, insert and spring are sized and structured to match perfectly, ensuring optimal sealing and motion performance.
- Reinforced Wear-Resistant Surface: Valve contact surfaces undergo special heat treatment, improving wear and impact resistance.
- Standardized Interface Design: Unified installation interface realizes direct interchangeability with original parts, avoiding secondary processing.
Maintenance and Upkeep Suggestions
To ensure stable valve performance and prolong service life, follow these field-proven maintenance protocols:
- Daily Inspection: Check valve assembly for mud leakage, monitor mud pump discharge pressure stability, and listen for abnormal valve action noise.
- Weekly Maintenance: Clean valve seat and insert surface mud deposits, inspect spring elasticity and valve surface wear.
- Monthly Inspection: Measure valve and seat wear clearance, check cage deformation, and replace slightly worn sealing components.
- Regular Overhaul: Replace valve inserts, springs and worn seats every 3-4 months, inspect cage positioning accuracy annually.
- Storage Requirements: Store rubber inserts and alloy components in a dry, dust-free environment; apply anti-rust oil on metal surfaces to prevent corrosion.
We supply the following spare parts:
| RB 80, RB 81 | NF-5-V14NF-5-V1-C5 | NF-5-S2 | 19000-3 | NF-5-I | ND-5-PH | |
| Roughrider 500 | 31/2-41/2 | NF-4-V24 | NF-4-S2 | 19000-4 | NF-4-IA | ND-4-PH |
| “Mono Block” F.E. | ||||||
| Roughrider 500 “Segmented” F.E. Discharge | 41/2 | NF-3-V34 | NF-3-S4 | NF-3-I | ||
| Roughrider 500 “Segmented” F.E. Suction | 4/2 | NF-4-V34 | NF-4-S4 | NF-4-I | ||
| Roughrider 1000 | 4 | NF-4-V34 | NF-3-S3 | NF-3-I | ||
| “Mono Block” F.E. | 41/-5 | NF-5-V14 | NF-5-I | ND-5-PH | ||
| 41/-5 | NF-5-V1-C5 | |||||
| Roughrider 1500 | 4 | NF-4-V34 | NF-3-S3 | NF-3-I | ||
| “Mono Block” F.E. | 5 | NF-5-V14 | NF-5-S1 | NF-5-I | ND-5-PH | |
| 5 | NF-5-V1-C5 |
| FIG.6070 | ND-7-V21ND-7-V2HC2ND-7-V13 | ND-7-S1 | 5710-32 | ND-7-I | ND-7-PH |
| 3F-450, 4F-750 | NF-5-V14NF-5-V1-C5 | NF-5-S2 | 19000-3 | NF-5-I | ND-5-PH |
| BJ-8 | NF-4-V14NF-4-V1-C5 | NF-4-S10 | 1235-84 | NF-4-I | ND-4-PH |
| 5830, 5850, 6050-A, 2050-A,1550-A, 7036, 1336,1036 | NF-4-V54 | ND-4-S17 | 5710-17 | NF-4-I | ND-4-PH |
| 600, 900 Giant | ND-8-V21 | ND-8-S2 | 5710-32 | ND-8-PH | |
| TPK 800, -1000 Hydraulic Seat Removal | ND-6-V21ND-6-V2HC2ND-6-V13 | ND-6-S7 | 5710-115 | ND-6-I | |
| TPK 1300, -1600, -2000, TPK 2200Hydraulic Seat Removal | ND-7-V21ND-7-V2HC2ND-7-V13 | ND-7-S16 | 5710-115L | ND-7-I | |
| TPK 800, -1000 Mechanical Seat Removal | ND-7-V21ND-7-V2HC2ND-7-V13 | ND-7-S1 | 5710-115L | ND-7-I | ND-7-PH |
| TPK 1300, -1600, -2000, TPK 2200Mechanical Seat Removal | ND-8-V21ND-8-V2HC2 | ND-8-S16 | 5710-115L | ND-8-PH |
On-site Fault Repair Cases
Case 1: High-Pressure Mud Backflow Due to Worn Valve Seat
The Wheatley 3F-450 mud pump suffered sudden pressure drop and obvious backflow noise, failing to maintain rated working pressure. The valve seat was severely worn by abrasive mud, losing sealing fit with the valve. Maintenance staff replaced the matched ND-series valve seat and corresponding valve insert, restored normal sealing and pressure stability.
Case 2: Valve Action Failure Caused by Fatigued Spring
The Wirth TPK 1000 mud pump valve failed to open and close normally, leading to unstable mud output. The valve spring fatigued and lost elasticity after long-term high-cycle operation. Workers replaced the matching high-fatigue spring, adjusted valve clearance, and resumed smooth valve action.
Case 3: Leakage Due to Damaged Valve Insert
Minor high-pressure mud leakage occurred at the Western Roughrider 500 mud pump valve assembly, gradually reducing working efficiency. The valve insert cracked and deformed due to hydraulic impact and mud erosion. Technicians replaced the special NF-series valve insert, cleaned the sealing surface, and eliminated leakage completely.
Frequently Asked Questions (FAQ)
| Question | Answer |
| Are these valves & parts fully interchangeable with original Novatech, Wirth & Wheatley mud pumps? | Yes, all parts in this catalog are precision-designed to match OEM dimensions and standards, achieving 100% direct interchangeability with original valves, seats, springs and accessories for all listed mud pump models. |
| How to select the correct valve part number for my mud pump? | Confirm your mud pump brand and exact model (e.g. Wirth TPK 800, Wheatley BJ-8), match the plunger size, and select the corresponding NF/ND-series valve part number listed in this catalog for perfect fit. |
| What is the service life of these mud pump valve components? | Under conventional abrasive mud drilling conditions, the service life of valve seats & inserts reaches 800-1200 working hours; springs can withstand 100,000+ continuous opening-closing cycles, with 30% longer life than ordinary aftermarket parts. |
Procurement Guidance
This Novatech, Wirth & Wheatley mud pump valve and matching parts catalog is a professional, reliable reference for oilfield drilling equipment maintenance and spare parts procurement teams, providing clear, accurate model matching and procurement standards for daily replacement, preventive maintenance and full fluid end overhaul. All supplied parts undergo strict dimensional verification, high-pressure hydraulic testing and wear resistance testing, fully complying with API 7K industry standards and original equipment quality requirements, with ultra-high sealing performance, wear resistance and fatigue resistance.
