1. Detailed Product Introduction
Our White Star WS-1300T pump fluid end parts cover every critical wearable and structural component for full fluid module, desurger assembly, and strainer cross assembly repairs. The comprehensive lineup includes fluid end modules, valve guides, API #7 valve & seat assemblies, springs, seals, studs, suction manifolds, strainers, and specialized fastening components, all engineered as direct OEM equivalents for the WS-1300T mud pump. Each component is crafted from high-grade forged alloy steel, wear-resistant polymers, and high-tensile metal materials, undergoing rigorous heat treatment, non-destructive testing, and precision finishing to meet or exceed original factory performance benchmarks.
2. Key Functional Specifications
Every WS-1300T fluid end component is built to deliver targeted, field-proven functionality for high-pressure mud pumping: Fluid end modules provide rigid, pressure-stable housing for core valve & cylinder components, rated for continuous operation up to 5000 PSI; API #7 valve & seat assemblies regulate one-way fluid flow with precise sealing to eliminate backflow; upper and lower valve guides maintain perfect valve alignment under rapid cycling; specialized seals and gaskets create static high-pressure sealing to prevent mud leakage; studs with hex nuts and lock washers deliver consistent clamping force to maintain joint integrity under pressure cycling; desurger and strainer components stabilize fluid flow and filter abrasive solid particles to protect downstream pump components.
3. Structural & Material Advantages
Our WS-1300T fluid end parts feature optimized structural design and premium material selection to outperform standard aftermarket alternatives. Fluid end modules are constructed from high-strength forged alloy steel (35CrMoA equivalent) with full heat treatment, reaching HRC 48-55 surface hardness for exceptional pressure resistance and impact durability; valve guides are precision-ground for perfect concentricity, minimizing valve friction and uneven wear; API #7 valve assemblies use wear-resistant polymer inserts and hardened steel seats, delivering up to 35% longer service life than generic replacements; all metal fasteners (studs, bolts) are high-tensile grade, resistant to fatigue and stretching under repeated pressure cycling; metal ring gaskets use precision-machined face seals for zero-leakage performance under extreme high-pressure conditions.
4. Recommended Applicable Operating Conditions
These premium WS-1300T fluid end parts are engineered for universal adaptability across harsh drilling environments, including onshore oil & gas exploration, horizontal directional drilling for pipeline and utility installation, deep water well drilling, mining drilling, and geological core drilling. The parts perform reliably under demanding operational parameters: continuous high-pressure pumping up to 5000 PSI, drilling mud with solid particle content up to 45%, frequent pump start-stop cycling, extreme ambient temperature fluctuations, and high-sand, high-clay, or chemically abrasive drilling fluid conditions.
5. Proactive Maintenance & Service Recommendations
To maximize component service life and minimize unplanned downtime for WS-1300T pump fluid end systems, follow these industry-leading maintenance protocols: Conduct visual pressure testing and wear inspections of valve assemblies, seals, and gaskets every 200 operating hours to identify early wear or leakage; replace valve inserts and seat assemblies simultaneously to maintain optimal sealing performance; lubricate valve guide surfaces with high-pressure anti-wear lubricant during every overhaul to reduce friction; torque all studs and fasteners to exact OEM specifications during installation to prevent joint failure; flush the desurger and strainer assembly every 150 operating hours to remove accumulated solid particles; inspect and replace worn plug seals and ring gaskets at every fluid end overhaul to avoid secondary leakage; store unused components in a dry, dust-free environment to prevent corrosion and material degradation.
We supply the following spare parts:
| WHITE STAR WS-1300T PUMP FLUID MODULE ASSEMBLY PARTS LIST | ||
| ITEM | PART NO. | DESCRIPTION |
| NO. | ||
| 1 | 726-F-025 | FLUID END MODULE |
| 2 | 726-F-004 | CYLINDER HEAD PLUG |
| 3 | 726-F-007 | TOP VALVE GUIDE |
| 4 | 726-F-72-2 | SPRING, API #7 |
| 5 | 726-F-72-FO | VALVE, API#7 |
| 6 | 726-F-73-FO | VALVE SEAT, API #7 |
| 7 | 726-F-006 | LOWER VALVE GUIDE |
| 8 | 726-F-005 | LOWER VALVE GUIDE RETAINER |
| 9 | 726-f-004-1 | PLUG SEAL |
| 10 | 726-F-72-1 | VALVE INSERT |
| 11 | 726-F-2-ST | STUD, C/W HEX NUT, LOCK WASHER |
| 12 | 726-F-3-ST | STUD, C/W HEX NUT & LOCK WASHER |
| 13 | 726-A-4-ST | STUD, C/W HEX NUT & LOCK WASHER |
| 14 | 726-F-25-1 | STUD, C/W HEX NUT & LOCK WASHER |
| DESURGER ASSEMBLY PARTS LIST | ||
| ITEM | PART NO. | DESCRIPTION |
| NO. | ||
| 1 | 726-A-1 | SUCTION MANIFOLD |
| 2 | 726-A-1-2 | DESURGE RUBBER |
| 3 | 726-A-1-1 | DESURGER RING |
| 4 | 726-A-1-HB | HEX HEAD BOLT, C/W HEX NUT & LOCK WASHER |
| ITEM | PART NO. | DESCRIPTION |
| NO. | ||
| 1 | 726-A-1 | SUCTION MANIFOLD |
| 2 | 726-A-20 | DESURGER |
| 2a | 726-A-5 | BLANK FLANGE (ALTERNATIVE) |
| 3 | 726-A-1-HB | HEX HEAD BOLT, C/W HEX NUT & LOCK WASHER |
| STRAINER CROSS ASSEMBLY PARTS LIST | ||
| ITEM | PART NO. | DESCRIPTION |
| NO. | ||
| 1 | 726-A-2 | STRAINER CROSS |
| 2 | 726-A-3 | STRAINER CROSS BULL PLUG FLANGE. 3”X5000 PSI |
| 3 | 726-A-13 | STRAINER (filter cylinder) |
| 4 | 726-A-2-SL | METAL RING GASKET, R44 |
| 5 | 726-A-2-1-G | METAL RING GASKET, R39 |
| 6 | 726-A-2-HN | HEX NUT, W/LOCK WASHER |
| 7 | 726-A-2-HB | STUD |
6. On-Site Field Failure Repair Cases
Case 1: High-Pressure Mud Leakage at Fluid End Module
A land drilling rig operating a WS-1300T mud pump experienced severe high-pressure mud leakage at the cylinder head plug joint, causing unstable discharge pressure and halted drilling. Field inspection revealed a worn 726-F-004-1 plug seal that had lost sealing integrity under continuous pressure cycling. Maintenance crews replaced the worn seal with a new premium equivalent, torqued the cylinder head plug to OEM specs, and resolved the leakage within 60 minutes, restoring full pump pressure and resuming drilling operations.
Case 2: API #7 Valve Failure Causing Fluid Backflow
During a horizontal directional drilling project, the WS-1300T pump showed inconsistent fluid flow and repeated pressure spikes, leading to reduced drilling efficiency. Troubleshooting identified a worn 726-F-72-FO API #7 valve and damaged valve seat, resulting in severe mud backflow. Replacing the valve, seat, and accompanying valve spring eliminated backflow, stabilized discharge pressure, and avoided a full pump shutdown that would have delayed project timelines.
Case 3: Strainer Blockage & Damaged Gasket
A deep well drilling site faced reduced pump suction efficiency and frequent pressure fluctuations. Inspection revealed a clogged strainer cylinder and a damaged 726-A-2-SL metal ring gasket, causing suction side air intake and flow instability. Crews replaced the strainer component and ring gasket, cleaned the full suction manifold, and restored normal suction flow, preventing further pump damage and extending uninterrupted operation time.
7. Frequently Asked Questions (FAQ)
| Question | Answer |
| Are these parts fully compatible with original White Star WS-1300T pumps? | Yes, every component is precision-machined to match OEM dimensional, pressure, and mounting specifications, ensuring 100% direct drop-in compatibility with White Star WS-1300T triplex mud pump fluid end systems with no modification required. |
| How do I identify the correct replacement part for my WS-1300T fluid end? | Use the OEM part numbers listed in the attached parts catalog to match your worn component; cross-reference the part description (valve, seal, stud, etc.) to confirm fit for fluid module, desurger, or strainer assembly repairs. |
| What maintenance interval is recommended for API #7 valve & seat replacement? | For standard drilling conditions, replace API #7 valve & seat assemblies every 300-400 operating hours; in high-abrasion or high-temperature drilling environments, shorten the interval to 200-250 hours to prevent unexpected failure. |
8. Procurement Guidance
For drilling operators and maintenance teams seeking reliable, OEM-grade replacement parts for White Star WS-1300T mud pump fluid end systems, this comprehensive parts collection serves as both a standardized procurement reference and a hands-on technical troubleshooting guide. Every component is engineered to reduce field downtime, lower long-term maintenance expenses, and sustain consistent drilling efficiency under the harshest operational conditions.
