Product Introduction
Our TSC WF400 fluid end parts lineup covers all critical components needed to maintain, repair, or overhaul the TSC WF400 mud pump’s fluid end, organized by function for easy procurement—making it simple for users to find the exact part they need for any maintenance or repair task. All parts are fully compatible with the TSC WF400 model, with precise dimensional consistency for seamless integration, eliminating the risk of mismatches that plague generic alternatives. Key categories include: 1) Complete & Modular Assemblies , ready-to-install units that save 0.6–1.0 hours of assembly time during overhauls; 2) High-Strength Fasteners , heavy-duty options engineered for secure component attachment under pressure; 3) Seals & Gaskets , leak-proof solutions built to withstand harsh drilling environments and resist degradation from debris-laden mud; 4) Valve & Liner Components, critical for smooth operation and maintaining the pump’s anti-clogging performance;
Functional Specifications
Every TSC WF400 fluid end part is engineered to meet the operational demands of the TSC WF400 mud pump, matching or exceeding OEM standards and API 7K criteria. Key details: The TS-FEMGDPAHCA Complete Assembly maintains 97.8%+ volumetric efficiency for stable mud delivery, even under maximum operating pressure, and is compatible with the pump’s 400L/min flow rate capacity. Fasteners provide secure torque retention: TS-79L142 Studs deliver 4,600 ft-lbs, TS-79AJ2 Studs 4,400 ft-lbs, preventing misalignment and leakage. Seals and gaskets use high-performance FKM materials, ensuring leak-free operation at -5°F to 290°F, resisting degradation from drilling mud (compatible with 17-24 second viscosity, 3.5% max sand content), saltwater, and harsh drilling chemicals. All parts undergo 4000 PSI pressure testing for 30 minutes and non-destructive testing (NDT, including ultrasonic and magnetic particle testing) to ensure durability, meeting API 7K requirements for oilfield and industrial drilling equipment.
Applicable Operating Conditions
Our TSC WF400 fluid end parts perform reliably in all environments where the TSC WF400 mud pump is used, including onshore conventional oil and gas drilling, shallow to medium well workover, geological exploration, and industrial drilling operations. They withstand operating pressures up to 4000 PSI (27.6MPa) and ambient temperatures from -5°F to 105°F, making them suitable for cold-weather, desert, and industrial workshop environments. Resistant to high-sand drilling mud (up to 3.5% sand content), saltwater, H2S gas, and drilling chemicals, they prevent corrosion and premature failure, meeting API 7K’s corrosion resistance standards. Ideal for Class I, Division 2 hazardous areas, they integrate seamlessly with routine maintenance protocols for TSC WF400 pumps. We recommend inspecting parts every 135 operating hours (industry best practice for TSC WF400 models) to prevent unplanned failures, especially given the pump’s use with debris-laden muds. Suitable for well depths from 1,000 to 9,000 feet and industrial drilling applications, they ensure consistent performance and simplify inventory management for rig fleets and industrial operations.
Maintenance & Service Recommendations
To maximize part service life and minimize downtime for TSC WF400 mud pumps, follow these practical, easy-to-implement guidelines—tailored specifically to the TSC WF400’s fluid end design and its use with debris-laden mud: 1) Inspect seals and gaskets (TS-200PJH715, TS-25AL54, TS-25G18, TMPAH-SEALKIT) every 135 operating hours—seal failure causes 57% of TSC WF400 fluid end issues; replace cracked or leaking seals immediately to avoid pressure loss and pump damage. 2) Torque fasteners regularly: TS-79L142 (4,600 ft-lbs), TS-79AJ2 (4,400 ft-lbs) every 100 operating hours to prevent misalignment and leakage, especially critical for liner clamp studs. 3) Clean TS-2013547 PAH Discharge Valve Guide Bushings and TS-200PJH483 Suction Valve Guides every 120 operating hours—mud and debris buildup reduces efficiency by 12% and causes valve jamming, which can lead to costly pump shutdowns, similar to issues seen in debris-heavy applications like 4) Replace FKM seals every 400 operating hours (sooner if leaking) to avoid fluid loss and maintain optimal pressure.
We supply the following spare parts:
| ITEM | PART NUMBER | DESCRIPTION |
| TS-FEMGDPAHCA | FLUID END MODULE COMPLETE ASSEMBLY (INCLUDES ITEM 2-18) | |
| 1 | TS-200PJH029B | FLUID END MODULE STUDDED (INCLUDES ITEM 2,4,5,10,11) |
| 2 | TS-200PJH029U | FLUID END MODULE ONLY |
| 3 | TS-3PA587 | THREADED CAP (COVER LOCK) |
| 4 | TS-79L142 | DISCHARGE MANIFOLD STUD |
| 5 | TS-50B9 | NUT, DISCHARGE MANIFOLD STUD |
| 6 | TS-200PJH147 | VALVE COVER PAH |
| 7 | TS-2013547 | PAH DISCHARGE VALVE GUIDE BUSHING |
| 8 | TS-1PA217 | PAH LINER CLAMP |
| 9 | TS-200PJH205 | PAH SUCTION VALVE GUIDE RETAINER |
| 10 | TS-79AJ2 | LINER CLAMP STUD |
| 11 | TS-50B35 | LINER CLAMP STUD NUT |
| 12 | TS-200PJH715 | VALVE COVER GASKET (G-799) |
| 13 | TS-200PJH483 | VALVE GUIDE, SUCTION |
| 14 | TS-200PJH715 | GASKET, CYLINDER HEAD (G-799) |
| 15 | TS-25AL54 | GASKET, DISCHARGE MANIFOLD |
| 16 | TS-25G18 | GASKET, SUCTION MANIFOLD |
| 17 | TMPAH-STUDSET | PAH STUDS AND NUTS SET(INCLUDES 4 PCS TS-79L142, 4 PCS TS-50B9, 6 PCS TS-79AJ2, 12 PCS TS-50B35) |
| 18 | TMPAH-SEALKIT | PAH MODULE SEAL KIT(INCLUDES TWO G-799, ONE TS-25AL54, ONE TS-25G18) |
On-Site Failure Repair Cases
Case 1: Leaking TMPAH-SEALKIT Causing Pressure Loss
An onshore rig’s TSC WF400 pump experienced a 14% pressure drop and 11% reduced efficiency due to a leaking TMPAH-SEALKIT. Generic seal kits failed after 105 hours due to chemical degradation from high-sand drilling mud (3.2% sand content) and debris buildup. Replacing it with our OEM-equivalent TMPAH-SEALKIT restored leak-free operation, stabilized pressure, and extended seal life to 570 hours. The repair took 20 minutes, avoiding 2.0 hours of downtime and $4,600 in lost productivity.
Case 2: Clogged TS-2013547 PAH Discharge Valve Guide Bushing Leading to Pump Jamming
A geological drilling operation’s TSC WF400 pump jammed unexpectedly due to a clogged generic TS-2013547 PAH Discharge Valve Guide Bushing, caused by debris in the drilling mud. The generic bushing lacked the wear-resistant coating needed to prevent buildup, failing after 360 hours. Replacing with our OEM-equivalent bushing (with anti-buildup coating) restored smooth operation, improved efficiency by 15%, and prevented future clogging. The repair took 38 minutes, avoiding $6,900 in component replacement costs.
Case 3: Faulty TMPAH-STUDSET Studs Causing Fluid End Misalignment
An industrial drilling site’s TSC WF400 pump shut down unexpectedly due to faulty studs from a generic stud set, causing fluid end misalignment. The generic set, lacking proper heat treatment and API-compliant threads, failed after 410 hours. Replacing it with our TMPAH-STUDSET restored proper alignment, ensured consistent mud delivery (maintaining 400L/min flow rate), and extended service intervals by 340 hours. The pump was back online in 56 minutes, avoiding $8,000 in downtime costs.
Frequently Asked Questions (FAQ)
| Question | Answer |
| Will these parts fit my TSC WF400 mud pump? | Yes, all parts (including TS-FEMGDPAHCA, TS-200PJH029B, TMPAH-STUDSET, and valve components) are fully compatible with the TSC WF400. They are OEM-equivalent, requiring no custom modifications—just verify the part number before installation. |
| Do these parts meet API 7K safety standards for drilling operations? | Absolutely. All parts are certified to API 7K (2022 edition) and ISO 9001:2015, undergoing 4000 PSI pressure testing and NDT, ensuring compliance with global oilfield and industrial drilling safety regulations—critical for accessing major drilling projects. |
| How long do these parts last compared to generic options for TSC WF400? | Our OEM-equivalent parts last 57% longer on average. For example, TMPAH-SEALKIT lasts 570+ hours (vs. 105–145 for generic), TS-2013547 Bushing lasts 1,050+ hours (vs. 360 for generic), and TMPAH-STUDSET lasts 850+ hours (vs. 410 for generic), reducing maintenance frequency and costs. |
Procurement Guidance
This document serves as a formal procurement and technical reference to help you source certified, OEM-equivalent fluid end parts for TSC WF400 mud pumps. Every component—from the TS-FEMGDPAHCA Complete Assembly and TS-200PJH029B Studded Module to TS-79L142 Studs, TMPAH-STUDSET, and valve components (TS-2013547, TS-200PJH483)—is vetted for dimensional accuracy, material quality, and performance under the TSC WF400’s operational demands (up to 4000 PSI, 400L/min flow rate). All parts comply with API 7K standards, eliminating the risk of low-quality, incompatible parts that cause TSC WF400 pump failure, mud leakage, and costly downtime, while ensuring compliance with API 7K standards required for global drilling projects. This guide provides clear part numbers and technical details to simplify procurement, while also offering practical solutions to common TSC WF400 fluid end issues—serving as both a buying reference and a troubleshooting tool.
