Mission 1x1-1/2Cx11, 1-1/2x2Rx11, 2x3Rx11 Pump Complete Parts Kit

Product Introduction

This complete parts kit is custom-engineered for direct replacement and maintenance of Mission sand pumps, specifically compatible with three critical models: 1x1-1/2Cx11, 1-1/2x2Rx11, and 2x3Rx11. These pumps are workhorses in oilfield solids control, mining slurry handling, and industrial fluid transfer—environments where reliability and minimal downtime are non-negotiable. Every component in the kit, from the 1-1/8 inch shaft (part number 3769-21A) to the high-chromium impellers (4170-44-1, 4571-44-1, 4574-44-1) and precision ball bearings (3944.01), is manufactured to meet API Spec Q1 and ISO 9001 quality standards, ensuring seamless compatibility with original Mission equipment. Unlike generic parts that often cause misalignment, leakage, or premature failure, this kit eliminates guesswork and provides a one-stop solution for all critical pump components, designed by engineers with over 15 years of experience in oilfield pump maintenance.

Core Purpose & Target User Needs

The primary purpose of this parts kit is to solve the biggest pain points faced by drilling contractors, solids control system operators, and maintenance teams: frequent part failures, time-consuming inventory management, compatibility issues during emergency repairs, and costly downtime. Target users include onshore/offshore drilling companies, mining operations, and industrial facilities that rely on Mission 1x1-1/2Cx11, 1-1/2x2Rx11, and 2x3Rx11 pumps to handle abrasive slurries, drilling mud, and industrial wastewater. This kit is built to keep your pumps running at peak performance—whether you’re performing routine maintenance, addressing unexpected breakdowns, or upgrading worn components. It eliminates the need to source individual parts from multiple suppliers, reduces repair time by 50% compared to piecemeal procurement, and ensures that every component works in perfect harmony, preventing costly secondary damage.

Function & Structural Features

Every component in the kit is designed to address specific operational challenges, with structural features that prioritize durability and ease of use:

• Rotating Assembly: The 1-1/8 inch shaft (052149780) is precision-machined from high-strength alloy steel to resist bending and wear, even under continuous load of up to 1800 RPM. The three included impeller options (for each pump model) are made from high-chromium alloy with a hardness rating of 220HR, capable of withstanding abrasive slurries with solid content up to 30%—a critical feature for oilfield and mining applications where standard impellers wear out in as little as 600 hours. Our impellers undergo a specialized heat treatment process that extends their service life to 1200 operating hours in harsh conditions, outperforming generic alternatives by 600 hours.

• Sealing System: The kit includes both a 5-ring packing with lantern (25014-01S-B) and a silicone carbide mechanical seal (WVBEM51185LIANORG), giving you flexibility based on your operating conditions. The bearing covers (3773A) and gaskets (10399-21-1, 10399-19-1) are designed to create a tight, leak-proof seal, preventing fluid loss and protecting internal components from contamination. The stuffing box cover (052147910) is easy to access, making seal replacements quick and straightforward—no specialized tools required.

• Structural & Fastening Components: The casing repair kits (G3766-1A, G4576-1A, F4672-1A) are pre-assembled with all necessary gaskets and hardware, eliminating the risk of missing parts during casing repairs. The casing studs (11907-82) and nuts (3932-1) are heat-treated to withstand torque up to 200N·m, ensuring a secure fit even under high pressure (up to 1.6MPa). All fasteners are corrosion-resistant, making them suitable for offshore and humid environments.

Applicable Working Conditions

This parts kit is engineered for the most demanding industrial environments, specifically tailored to the needs of:

• Onshore and offshore oil & gas drilling platforms (drilling depth up to 3500m), where pumps handle drilling mud with high solids content and operate in temperatures ranging from -10°C to 120°C.

• Mining operations, including coal, copper, and gold mines, where pumps transfer slurry with particle sizes up to 2mm and operate 24/7 under heavy load.

• Industrial solids control systems, such as desanders, desilters, and mud mixers, where consistent flow rate (150-180m³/h) and minimal leakage are critical.

• Wastewater treatment facilities with abrasive particles, where corrosion and wear are major concerns.

All components meet API 610 (2021 Edition) standards for centrifugal pumps, ensuring they can handle the extreme pressure, temperature, and abrasion of these environments without compromising performance.

Maintenance & Engineer Tips

To maximize the life of your pump and the components in this kit, our senior pump engineers recommend the following practical guidelines—based on over 10,000 hours of field experience:

1. Pre-Installation Check: Always verify that the part number matches your pump model (e.g., use impeller 4170-44-1 for 1x1-1/2Cx11 pumps). Inspect components for scratches, deformation, or corrosion—even small damage can lead to leaks or premature failure. Avoid overtightening casing studs; torque them to 180-200N·m to prevent casing warping (a common mistake that causes leakage).

2. Lubrication: Grease the ball bearings (3944.01) every 50 operating hours with high-temperature lithium grease, filling the bearing housing to 2/3 capacity. Over-greasing causes overheating, while under-greasing leads to premature wear—both common issues we see in field repairs.

3. Seal Maintenance: For the 5-ring packing, adjust the gland bolts to allow 3-5 drops of leakage per minute—this keeps the seal lubricated and prevents overheating. Replace the packing and mechanical seal after 200 operating hours, or if leakage exceeds 10 drops per minute.

4. Routine Inspection: Check the impeller for wear monthly; if the erosion depth exceeds 1mm, replace it immediately. Use a dial indicator to check shaft runout—if it exceeds 0.05mm, the shaft (3769-21A) is bent and needs replacement to avoid damaging bearings and seals.

Authoritative Standards & Unique Value

All components in the kit comply with API Spec Q1, ISO 9001, API 610 (2021 Edition), and ANSI/ASME B73.1 standards—critical for oilfield and industrial applications that require regulatory compliance. Our unique advantages include:

• 100% OEM Compatibility: Every part is a direct drop-in replacement for Mission 1x1-1/2Cx11, 1-1/2x2Rx11, and 2x3Rx11 pumps, no modifications needed. We’ve tested each component against original Mission parts to ensure perfect fit and performance.

• Enhanced Durability: Key components use high-chromium alloy (hardness 220HR) and heat-treated steel, with a 1200-hour service life for impellers and 200-hour service life for bearings—far exceeding generic parts (which typically last 600 hours for impellers and 100 hours for bearings).

• Engineer-Validated Design: Each component undergoes finite element analysis (FEA) to resist fatigue and impact, and is tested under 1.5 times rated load for 1000 hours to ensure reliability. We also conduct field testing in 12 different oilfield and mining locations to validate performance.

We supply the following spare parts:

Field Fault Repair Cases

These real-world cases highlight how our parts kit solves common pump issues, with detailed data and customer feedback:

1. Permian Basin, USA | Mission 2x3Rx11 Sand Pump: The pump experienced abnormal vibration (85dB), shaft runout of 0.12mm, and a 25% drop in flow rate (from 180m³/h to 135m³/h) due to a bent shaft and worn bearing. Using our kit, the maintenance team replaced the shaft (3769-21A) and bearing (3944.01), realigned the pump-motor, and adjusted the packing gland. Post-repair: shaft runout 0.04mm, vibration 62dB, flow rate restored to 180m³/h. Customer feedback: “We used to spend 8 hours sourcing parts and repairing; this kit cut it down to 2 hours. The pump has run flawlessly for 6 weeks.”

2. North Sea Offshore Platform | Mission 1-1/2x2Rx11: Severe sealing leakage (25 drops/min) and casing gasket failure were causing safety concerns and fluid loss. The team used our kit to replace the packing (25014-01S-B), mechanical seal (WVBEM51185LIANORG), and casing gasket (10399-19-1), then retorqued the casing studs. Post-repair: leakage reduced to 4 drops/min, no issues after 72 hours of continuous operation. Customer feedback: “Offshore repairs are tricky, but this kit had everything we needed—no missing parts, perfect fit. It met all our safety standards.”

3. Western Australia Mining Site | Mission 1x1-1/2Cx11: The impeller had 2.1mm erosion, causing a 30% flow rate drop (from 150m³/h to 105m³/h) and bearing overheating (85°C). The team replaced the impeller (4170-44-1) and bearing (3944.01), cleaned the suction line, and lubricated the bearings with high-temperature grease. Post-repair: flow rate 150m³/h, bearing temperature 65°C. Customer feedback: “Our pumps run 24/7, so downtime is costly. This kit got us back up fast, and the new impeller is holding up better than the original.”

4. Middle East Onshore Drilling | Mission 2x3Rx11: Casing leakage and loose studs were causing pressure drops (from 1.4MPa to 1.0MPa). The team used our casing repair kit (F4672-1A), replaced the studs (11907-82) and nuts (3932-1), and retightened to 190N·m. Post-repair: pressure maintained at 1.4MPa, no leakage. Customer feedback: “We’ve had issues with generic studs loosening, but these held tight. The kit made the repair straightforward—even our junior technicians could do it.”

Frequently Asked Questions (FAQs)

Purchase Guidance

This complete parts kit is your reliable solution for maintaining and repairing Mission 1x1-1/2Cx11, 1-1/2x2Rx11, and 2x3Rx11 pumps—whether you’re performing routine maintenance, handling emergency breakdowns, or upgrading worn components. It eliminates the hassle of sourcing individual parts from multiple suppliers, reduces repair time, and ensures that every component works seamlessly together to keep your pumps running at peak performance. All parts are manufactured to strict industry standards, with rigorous quality testing and field validation to ensure reliability in the most demanding environments. We provide full technical support to help you verify part compatibility, select the right components, and troubleshoot any installation issues. Contact our sales team to inquire about stock availability and place your order—we’re committed to providing you with high-quality, compatible parts that keep your operations running smoothly, without costly downtime or compatibility headaches.

contact us ：

Emeil: [email protected]  

whatsapp: +86 15275658619