PUMP DOWN? FLOW STOPPED?
Every minute costs production. One call to D.M.S. - 24/7/365 live tech answers. Pickup dispatched nationwide. Free transport. We're moving.
(832) 860-5493
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Industrial Pump Repair & Overhaul - Nationwide
At D.M.S., we specialize in the complete restoration of all industrial pumps - centrifugal, positive displacement, vacuum, API 610, slurry, metering, submersible, and more. Whether your pump has lost prime, is cavitating, leaking, or completely seized, our in-house CNC machining, impeller rebalancing, and performance testing deliver zero-downtime solutions with free nationwide pickup and the strongest warranty in the industry.
Every repair begins with a comprehensive initial evaluation including:
Vibration spectrum analysis (ISO 10816-3)
Dynamic balancing verification & residual unbalance check
Bearing condition & lubrication analysis
Impeller wear & coating inspection
Mechanical seal & packing condition
Full performance validation under load
Detailed 12-Step Pump Rebuild Process
1. Free Nationwide Pickup
Insured, zero-cost transport
2. Digital As-Received Documentation
Photos + video of condition
3. Complete Disassembly
100% teardown of components
4. Ultrasonic & Glass-Bead Cleaning
Remove scale, rust, contamination
5. Non-Destructive Testing
Detect cracks via MPI/DP
6. Precision CMM Inspection
Dimensions verified to .0001"
7. Impeller Repair
Hard-facing, ceramic coating
8. Shaft Restoration
Straightening or new CNC shaft
9. Wear Ring Restoration
Metal spray + precision grinding
10. Seal & Packing Upgrades
Cartridge seals, API 682 plans
11. Dynamic Balancing
G2.5 standard on impellers
12. Full Performance Test
Flow, head, vibration verified
Comprehensive Pump Rebuild Process
1. Free Pickup
Zero-cost insured transport
2. Inspection & NDT
CMM checks & crack detection
3. Cleaning
Ultrasonic & glass-bead scale removal
4. Impeller Repair
Hard-facing & coatings
5. Shaft & Rings
Straightening & rings grinding
6. Seal Upgrade
Mechanical seal installation
7. Balancing
G2.5 dynamic balancing
8. Performance Test
Full-load flow verification
Top 18 Pump Failure Modes We Fix
Cavitation Damage
Symptoms: Pitting on impeller, noise. Root Cause: NPSH too low.
Bearing Failure
Symptoms: Heat, vibration. Root Cause: Lack of lube, overload.
Mechanical Seal Leak
Symptoms: Fluid on floor. Root Cause: Worn faces, wrong plan.
Shaft Wear / Corrosion
Symptoms: Vibration, leaks. Root Cause: Sleeve wear, chemicals.
Impeller Imbalance
Symptoms: Vibration. Root Cause: Erosion, buildup.
Wear Ring Clearance
Symptoms: Low flow, heat. Root Cause: Abrasion, misalignment.
Casing Erosion
Symptoms: Low pressure. Root Cause: Solids, velocity.
Coupling Failure
Symptoms: Noise. Root Cause: Misalignment, fatigue.
Clogged Suction
Symptoms: No flow. Root Cause: Debris, poor strainer.
Loss of Prime
Symptoms: No flow after stop. Root Cause: Air leak.
Packing Leak
Symptoms: Constant drip. Root Cause: Over-tightened.
Volute Wear
Symptoms: Low efficiency. Root Cause: Abrasion.
Thrust Bearing Failure
Symptoms: Axial movement. Root Cause: Hydraulic imbalance.
Suction Recirculation
Symptoms: Noise, damage. Root Cause: Low flow.
Corrosion Attack
Symptoms: Material loss. Root Cause: Wrong metallurgy.
Vortexing
Symptoms: Errant vortexes. Root Cause: Faulty fluid dynamic specs.
Volute Fracture
Symptoms: Deep structural cracks. Solution: Structural weld + MPI.
Piston Ring Extrusion
Symptoms: Severe oil bypass. Solution: Replace with premium rings.
Top 8 Pump Failure Modes We Fix
From dynamic bearing exhaustion to impellar erosion, our engineers diagnose and rectify the core cause of failure.
Cavitation
Symptoms: Impeller pitting. Fix: Metal spray + trim.
Bearing Failure
Symptoms: Extreme heat. Fix: Oversize SKF install.
Case Leaks
Symptoms: Fluid spraying. Fix: Casing resurfacing.
Shaft Damage
Symptoms: Runout. Fix: True shaft or CNC turn.
Seal Failure
Symptoms: Direct leaks. Fix: Cartridge seal upgrades.
Volute Fracture
Symptoms: Structural cracking. Fix: Sub-arc welding + test.
Vortexing Slop
Symptoms: Unstable flow. Fix: Trim & adjust vane geometry.
Dry-Run Damage
Symptoms: Seized internals. Fix: Full packing/sleeve rebuild.
40+ Pump Brands We Service
20+ Pump Brands We Service
We manufacture, reverse-engineer, and repair replacement gears for all major domestic and international brands.
Goulds
Durco
Flowserve
Sulzer
Viking
Warren Rupp
Wilden
ARO
Graco
Blackmer
KSB
ITT Goulds
Peerless
Aurora
Tuthill
Vanton
Iwaki
Moyno
Seepex
Netzsch
Allweiler
Bornemann
Leistritz
Dean
Roper
Ingersoll Rand
Worthington
Pacific
Lawrence
Ruhrpumpen
Sundyne
ALL OEM
Goulds
Durco
Flowserve
Sulzer
Viking
Warren Rupp
Wilden
ARO
Graco
Blackmer
KSB
ITT Goulds
Peerless
Aurora
Tuthill
Moyno
Seepex
Netzsch
ALL OEM
Industries We Keep Flowing
Agriculture & Irrigation
Vertical turbines, deep well pumps, heavy-duty PTO drives.
Chemical & Petrochemical
Acids, caustics, solvents. Hastelloy, titanium upgrades.
Food & Beverage
Sanitary, 3A, FDA materials. Electropolish options.
Marine & Offshore
Ballast, cooling, fire pumps. Bronze & duplex stainless.
Mining & Minerals
Slurry, tailings, reagents. Ultra-hard coatings.
Oil & Gas / Refining
Crude, gasoline, gas-condensate, pipeline products. API 610 pumps.
Plastics & Polymers
Pelletizing pumps, extruder gearboxes, rotary valves.
Power Generation
Boiler feed pumps, ID/FD fans, turbine lube systems.
Pulp & Paper
Stock pumps, black liquor systems, high consistency drives.
Steel & Primary Metals
Descaling pumps, exhaust blowers, heavy-duty gearboxes.
Wastewater Treatment
Sludge pumps, aeration blowers, decanter centrifuges.
HVAC & District Cooling
High-flow chilled water pumps, condenser loops, and booster systems.
Oil & Refining
API 610 compliance & high-temp.
Chemicals
Acids, caustics & titanium upgrades.
Power Generation
Boiler feed & high-pressure specialists.
Wastewater
Industrial lift stations & NSF coatings.
Pump Types We Rebuild
Air-Operated Diaphragm
- Wilden, ARO, Warren Rupp
- Parts kits + full rebuilds
ANSI / ASME Pumps
- Goulds 3196, Durco Mark 3
- Full drop-in replacements
API 610 Pumps
- OH2, BB1, BB3, VS1
- Heavy-duty oil & gas
Metering Pumps
- Milton Roy, Pulsafeeder
- Precision dosing calibration
Positive Displacement
- Gear, lobe, screw, cavity
- High viscosity specialists
Slurry Pumps
- Warman, GIW
- Rubber lined & hard metal
Split Case Pumps
- Double suction, horizontal/vertical
- High flow water & process
Submersible Pumps
- Flygt, Tsurumi
- Rewind & seal replacement
Vacuum & Liquid Ring
- Nash, SIHI, Gardner Denver
- Full cone port rebuilds
Progressive Cavity Pumps
- Milton Roy, Seepex, Netzsch
- Worn stators, rotor replating, and universal joint overhauls
Vertical Turbine Pumps
- Flowserve, Goulds, Layne Bowler
- Deep well, sump, & water intake
Multistage Centrifugal
- Sulzer, Flowserve, KSB
- Boiler feed & high-pressure RO
Unmatched 12-36 Month Install Warranty
Every D.M.S. pump rebuild includes a 12-36 month warranty from date of installation. We stand behind our engineering with the longest, strongest coverage in the industrial repair sector. Zero risks, zero leaks. We also handle integrated prime movers and powertrains, including high-torque Falk or SEW gearboxes and motor reducers.
Industrial Pump Troubleshooting & FAQs
Why is my centrifugal pump losing discharge pressure and flow rate?
A gradual loss in flow and head is typically caused by worn wear rings or impeller erosion. When the clearance between the casing wear rings and the impeller hub exceeds factory tolerances (typically over .015" or .38mm), high-pressure discharge fluid slips back into the low-pressure suction eye, significantly lowering volumetric efficiency. We resolve this by aiming thermal spray at the wear surfaces and precision-grinding them back to OEM specifications.
How can I prevent cavitation damage in high-temperature chemical process pumps?
Cavitation occurs when the Net Positive Suction Head Available (NPSHa) drops below the pump's required NPSHr, causing vapor bubbles to form and violently collapse against the impeller shroud. To combat this in aggressive chemical environments, we rebuild eroded impellers using corrosion-resistant alloys (like Hashalloy or Duplex Stainless Steel) and apply advanced erosion-resistant ceramic composite coatings.
What are the advantages of upgraded mechanical cartridge seals over traditional packing?
Traditional compression packing requires a constant, controlled drip to lubricate the shaft, which leads to product waste, shaft sleeve wear, and constant maintenance. Upgrading to a balanced mechanical cartridge seal (configured to API 682 piping plans) provides a completely leak-free seal boundary. This eliminates environmental hazards, prevents shaft sleeve wear, and significantly reduces downtime.
One Call Restarts Your Flow
Flow stopped? Line down?
Don't wait weeks for OEM parts - we rebuild it bulletproof in days.
(832) 860-5493
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Email: INFO@DIRECTMAINTENANCESERVICES.COM
