💪 Laing E-10 EcoCirc 6050U0014 Spa Circulation Pump – 230V 3/4″ MPT Threaded

Secure threaded connections meet 230V ECM efficiency — zero-seal magnetic drive with built-in dry run protection

🔄 Product Overview

The Laing E-10 EcoCirc 6050U0014 is a 230V single-speed spa circulation pump with 3/4″ Male Pipe Thread (MPT/NPT) connections and a 4-foot bare cord included, designed for continuous 24/7 low-flow heater circulation on 230V spa systems equipped with threaded plumbing. This is the 230V companion to the 6050U0013 (115V, 3/4″ MPT) — identical pump body, identical threaded wet end, with the motor wound for 230V operation instead of 115V.

Threaded MPT connections screw directly into female-threaded fittings for a secure, permanent, leak-resistant connection — unlike barb connections that rely on hose clamps. This makes the 6050U0014 the correct choice for any 230V spa with rigid threaded plumbing or factory-installed female threaded ports. The 3/4″ MPT threads have a physical outside diameter of 1″ — standard for 3/4″ NPT pipe threads.

Powered by advanced Electronically Commutated Motor (ECM) technology, this pump consumes up to 40% less energy than the SM909 and SM1212 series it directly replaces. The magnetically driven open impeller eliminates the traditional shaft seal entirely — removing the number one failure point in conventional circulation pumps. With no mechanical seal to leak or wear out, the E-10 delivers truly maintenance-free motor operation. The clog-resistant open impeller handles debris that would stall closed-impeller pumps, while the 32-bit motor with side vents provides improved cooling for extended service life.

Built-in dry run protection via an embedded microprocessor automatically shuts down the pump if operated without water, and a soft start feature (~3 seconds) reduces mechanical stress on every startup cycle. Delivering up to 14 GPM with a maximum head of 20 feet, the E-10 fits the tightest equipment compartments at under 5 lbs and whisper-quiet operation under 50 dB.

⭐ Key Features

• ✅ 3/4″ MPT Threaded Connections — Secure, leak-resistant male pipe thread screws into female fittings for permanent, reliable plumbing
• ✅ 230V / 65W ECM Technology — Electronically Commutated AC/DC/AC Spherical Motor consumes 40% less energy than previous SM909/SM1212 series
• ✅ 14 GPM Maximum Flow — Optimal flow for low-flow heater circulation systems with 20 ft maximum head
• ✅ Magnetically Driven Open Impeller — NO shaft seal to leak or replace, plus clog-resistant PPO construction for trouble-free operation
• ✅ Built-In Dry Run Protection — Embedded microprocessor automatically detects no-water condition and shuts down to prevent damage
• ✅ Soft Start Technology — Approximately 3-second gradual startup reduces mechanical stress and extends pump life
• ✅ 4-Foot Bare Cord INCLUDED — Pre-wired with 3 wires, NO connectors on cord end — wire directly to spa control system
• ✅ 32-Bit Motor with Side Vents — Advanced motor design with improved heat dissipation for longer service life
• ✅ High Density Ceramic Bearing Ball & Graphite Impeller — Engineered for continuous 24/7 operation
• ✅ Replaces SM909-NT 230V Series — Direct replacement for 909-NT-18 (6917) and 909-NT-26 (6918)
• ✅ 50/60 Hz Compatible — Works on both domestic (60 Hz) and international (50 Hz) electrical systems
• ✅ 1-Year Manufacturer Warranty — Full coverage from Laing Thermotech / Xylem

🔧 Technical Specifications

Specification	Value
Manufacturer	Laing Thermotech (Xylem)
Series	E-10 EcoCirc
Model	E10-NSTNNN2W-20 / E10-NSTN2W-20 / E10-NSTNDNN2W-01 / E10-NSTNDNN2W-20
Primary Part Number	6050U0014
Alternate Part Number	73999
UPC	733886739992
Pump Type	Spa Circulation Pump — 24/7 Continuous Duty
Motor Type	Electronically Commutated AC/DC/AC Spherical Motor (ECM)
Impeller Type	Magnetically Driven, Open — Clog Resistant
Impeller Material	PPO (Polyphenylene Oxide) / Graphite with High Density Ceramic Bearing Ball
Shaft Seal	NONE — Magnetically Driven (No Seal Required)
Voltage	230V
Frequency	50/60 Hz (Domestic and International)
Phase	Single Phase
Wattage	65W
RPM	1,800–3,100 (Variable Internal Speed Range)
Speed	Single Speed
Maximum Flow Rate	14 GPM
Maximum Head	20 ft
Maximum Working Pressure	50 PSI
Maximum Temperature	140°F (60°C)
Rotation	Counter-Clockwise (Viewed from Motor End)
Suction Connection	3/4″ MPT (Male Pipe Thread) — Center Suction
Suction Physical Dimension	1″ OD (Standard for 3/4″ NPT Threads)
Discharge Connection	3/4″ MPT (Male Pipe Thread) — Side Discharge
Discharge Physical Dimension	1″ OD (Standard for 3/4″ NPT Threads)
Volute Fastening	4 Bolts and 4 Nuts
Wet End Material	Thermoplastic
Discharge Positions	4 Angles via Built-In Mounting Bracket
Dimensions (L × H × W)	6″ × 4.88″ × 4.31″
Weight	Under 5 lbs (1.7 kg)
Noise Level	Under 50 dB — Whisper Quiet
IP Rating	IP55
Power Cord	4-Foot Bare Cord INCLUDED (3 Wires, NO Connectors)
Mounting Bracket	INCLUDED
Mounting Position	Horizontal, or Vertical with Motor End Down
Drain Plug	None
Protection Features	Dry Run Protection, Automatic Overload Protection, Soft Start (~3 sec)
Warranty	1-Year Manufacturer Warranty

⚡ Electrical Requirements

Electrical Spec	Requirement
Supply Voltage	230V (220V/240V same standard)
Frequency	50/60 Hz
Phase	Single Phase
Wattage	65W
Power Cord	4-Foot Bare Cord INCLUDED (3 Wires, NO Connectors on Cord End)
Wiring	3 Wires: Hot, Hot, Ground (230V — No Neutral)

⚠️ CRITICAL — 230V ONLY:

This pump operates on 230V ONLY. Do NOT connect to a 115V circuit. Using the wrong voltage will result in the pump not operating or potential damage. For 115V spas with 3/4″ MPT threaded connections, order the Laing E-10 model 6050U0013 / 74009 (115V, 3/4″ MPT).

⚠️ 230V WIRING:

230V pumps use TWO hot wires plus ground — there is NO neutral wire. The 4-foot bare cord has 3 wires with NO connectors on the cord end. Wire directly to your spa control system per the manufacturer’s wiring diagram.

🔗 Compatibility Guide

CRITICAL: MPT (Threaded) vs Barb — NOT Interchangeable

Feature	MPT (Threaded) — This Pump	Barb — 6050U0016
Connection Type	Male Pipe Thread (3/4″ NPT)	Hose Barb (3/4″)
How It Connects	Screws into female threaded fitting	Slides into flexible hose, secured with clamp
Physical OD	1″ (standard for 3/4″ NPT)	3/4″
Best For	Rigid threaded plumbing, female threaded ports	Flexible tubing, hose connections
Seal Method	Teflon tape or pipe thread sealant	Hose clamp compression

⚠️ Threaded and barb connections are NOT interchangeable. If your spa has female threaded ports, order this pump (6050U0014). If your spa has flexible hose connections, order 6050U0016 (3/4″ barb, 230V) or 6050U0010 (1″ barb, 230V). Using the wrong connection type results in leaks or inability to install.

230V vs 115V MPT — Same Pump, Different Voltage

Feature	6050U0014 (This Pump) — 230V	6050U0013 — 115V
Voltage	230V	115V
Wattage	65W	62W
Wiring	Hot, Hot, Ground (No Neutral)	Hot, Neutral, Ground
Connections	3/4″ MPT	3/4″ MPT
Max Flow Rate	14 GPM	15 GPM
Max Head	20 ft	20 ft
Motor / Protection	Identical ECM	Identical ECM
Dimensions	6″ × 4.88″ × 4.31″	6″ × 4.88″ × 4.31″
Cord	4 ft Bare — NO Connectors	4 ft Bare — NO Connectors

💡 Both pumps are physically identical with the same ECM motor platform and threaded wet end. The ONLY difference is the voltage winding. Choose 230V (this pump) or 115V (6050U0013) based on your spa’s electrical supply.

Laing E-10 Family — All 230V Models

Part Number	Voltage	Connection	HydroQuip #
6050U0014 / 73999 (This Pump)	230V	3/4″ MPT (Threaded)	10-0125 / LHB07100140
6050U0016 / 73979	230V	3/4″ Barb	10-0121 / LHB07100138
6050U0010 / 74079	230V	1″ Barb	10-0123 / LHB07100142

Laing E-10 Family — Complete Lineup (115V + 230V)

Part Number	Voltage	Connection
6050U0013 / 74009	115V	3/4″ MPT
6050U0014 / 73999 (This Pump)	230V	3/4″ MPT
6050U0015 / 73989	115V	3/4″ Barb
6050U0016 / 73979	230V	3/4″ Barb
6050U0011 / 74069	115V	1″ Barb
6050U0010 / 74079	230V	1″ Barb

SM909-NT 230V Threaded Series — Replaced By E-10

The Laing E-10 directly replaces ALL previous Laing SM909-NT 230V threaded circulation pumps.

Previous Model	Sundance/Jacuzzi #	Replaced By
SM-909-NT-18 230V	6917	E-10 6050U0014 (Direct)
SM-909-NT-26 230V	6918	E-10 6050U0014 (Direct)
SM909NT-240	—	E-10 6050U0014 (Direct)

Compatible Spa Brands (230V with Threaded Plumbing)

• ♨️ Sundance Spas — 230V models with threaded plumbing connections
• ♨️ Jacuzzi — 230V models with threaded plumbing connections
• ♨️ L.A. Spas — 230V threaded models
• ♨️ Marquis Spas — 230V threaded models
• ♨️ Atlantic Coast Spas — 230V threaded models
• ♨️ Gatsby Spas — 230V threaded models
• ♨️ Hawkeye Spas — 230V threaded models
• ♨️ Royal Spas — 230V threaded models
• ♨️ Saratoga Spas — 230V threaded models
• ♨️ And other 230V spa manufacturers using threaded circulation plumbing

---

🔩 Alternate Part Numbers & Cross-References

Primary Part Numbers

Part Number	Description
6050U0014	Laing Primary Part Number
73999	Laing Alternate Part Number
E10-NSTNNN2W-20	Laing Full Model Number (Hot Tub Warehouse, Sunplay)
E10-NSTN2W-20	Laing Model Number
E10-NSTNDNN2W-01	Laing Model Number (Spa Pumps and More)
E10-NSTNDNN2W-20	Laing Model Number (Backyard Pool Superstore)
LA73999	Laing Industry Code (SpaParts.com)
733886739992	Primary UPC Code

HydroQuip Cross-References

Part Number	Notes
10-0125	HydroQuip Part Number
10-0125-K	HydroQuip Kit Version
LHB07100140	HydroQuip Internal Code
LHB07100075	HydroQuip Internal Code (Previous)

Allied Innovations Cross-References

Part Number	Notes
1-00-0172A	Allied Part Number (SpaParts.com)

Sundance / Jacuzzi Cross-References

Part Number	Notes
6510	Sundance/Jacuzzi
6513	Sundance/Jacuzzi
6917	SM-909-NT-18 230V
6918	SM-909-NT-26 230V
6921	Sundance/Jacuzzi

Previous SM909-NT 230V Model Codes

Part Number	Notes
SM909NT-240	SM909 Threaded 230V Model Code
SM-909-NT-18 (230V)	SM909 Threaded 230V
SM-909-NT-26 (230V)	SM909 Threaded 230V

Other Industry Cross-References

Part Number	Notes
34-158-1456	Horizon Industry Part Number
906930534	Industry Cross-Reference
9338-21	Industry Cross-Reference
9339-10	Industry Cross-Reference
9339-11	Industry Cross-Reference
9339-13	Industry Cross-Reference
9339-17	Industry Cross-Reference

UPC Cross-References

UPC	Notes
733886739992	Primary UPC
733886691702	UPC Cross-Reference
733886691801	UPC Cross-Reference

---

🛠️ Installation Requirements

What’s in the Box

• ✅ Laing E-10 EcoCirc Circulation Pump (230V, 3/4″ MPT)
• ✅ 4-Foot Bare Cord (Pre-Wired, 3 Wires, NO Connectors on Cord End)
• ✅ Built-In Mounting Bracket
• ❌ Unions / Fittings — NOT INCLUDED (Order Separately If Needed)

Mounting

Requirement	Specification
Mounting Position	Horizontal, or Vertical with motor end down
Bracket	Built-in mounting bracket with 4 discharge angle positions
Base	Solid, level surface
Ventilation	Side vents must remain clear for motor cooling
Access	Sufficient clearance for service and maintenance

Plumbing

Connection	Size
Suction	3/4″ MPT (1″ Physical OD) — Center
Discharge	3/4″ MPT (1″ Physical OD) — Side
Volute Fastening	4 Bolts and 4 Nuts

Threaded Connection Installation Tips

⚠️ Apply Teflon tape or pipe thread sealant to male threads before screwing into female fittings.

⚠️ Hand-tighten first, then wrench-tighten 1–2 additional turns only.

⚠️ Do NOT over-tighten — the thermoplastic wet end can crack under excessive torque. If you see cracking around the thread area, the wet end has been damaged and may need replacement.

⚠️ Female fittings must accept standard 3/4″ NPT threads (1″ physical outside diameter).

General Installation Notes

⚠️ Pump must be installed below water level (flooded suction) to operate properly.

⚠️ Built-in dry run protection will shut down the pump if operated without water — however, always ensure flooded suction before starting.

⚠️ 230V WIRING: 4-foot bare cord has 3 wires with NO connectors on the cord end. Wire directly to spa control system: Hot, Hot, Ground — there is NO neutral wire on 230V.

⚠️ Soft start feature provides approximately 3-second gradual startup — this is normal operation, not a fault.

⚠️ Can be mounted horizontally or vertically with the motor end pointing down. Do NOT mount with motor end up.

⚠️ Counter-clockwise rotation when viewed from the motor end — do not attempt to reverse.

⚠️ GFCI protection is required by the National Electrical Code (NEC) for all hot tub and spa installations.

⚠️ Keep motor side vents clear of debris for proper cooling.

⚠️ 230V ONLY — verify your spa’s voltage before ordering. For 115V with 3/4″ MPT, order 6050U0013 / 74009.

---

🔧 Maintenance Guide

Routine Maintenance

Task	Frequency	Notes
Check for leaks	Monthly	Around threaded connections
Inspect threaded connections	Monthly	Check for weeping — re-apply Teflon tape if needed
Check flow rate	Monthly	Reduced flow indicates blockage
Inspect motor side vents	Quarterly	Keep clear of debris for cooling
Verify quiet operation	Quarterly	Unusual noise indicates bearing wear
Check mounting bracket	Quarterly	Tighten if loose
Clean open impeller area	As Needed	Remove any debris if flow decreases

Warning Signs — Replace Pump If:

• Unusual noise (grinding, humming, rattling)
• Motor overheating excessively
• Reduced or no water flow despite clear suction
• Motor trips breaker repeatedly
• Pump fails to start after soft start period
• Dry run protection activates repeatedly with water present
• Cracked wet end from over-tightening threaded connections

Magnetically Driven Impeller — NO Seal Replacement Needed

The Laing E-10 uses a magnetically driven impeller with NO mechanical shaft seal. Unlike conventional shaft-seal circulation pumps (Gecko CMHP, Waterway Iron Might, Balboa) where the seal is the most common failure point, the E-10’s magnetic drive completely eliminates this component. There is no seal to leak, wear out, or replace — ever.

---

🎯 Ideal Applications

Application	Suitability	Notes
♨️ 24/7 Spa Circulation (230V)	✅ Yes — Primary Use	Continuous duty low-flow heater circulation
♨️ Low-Flow Heater Systems	✅ Yes — Primary Use	14 GPM max flow, 20 ft max head
♨️ Spas with Threaded Plumbing (230V)	✅ Yes — Primary Use	3/4″ MPT screws into female threaded fittings
♨️ Replacement SM909-NT 230V	✅ Yes — Direct	Replaces 909-NT-18 (6917) and 909-NT-26 (6918)
♨️ Sundance / Jacuzzi Threaded (230V)	✅ Yes	230V models with threaded circulation plumbing
♨️ L.A. Spas / Marquis Threaded (230V)	✅ Yes	230V threaded models
♨️ Atlantic Coast / Gatsby / Hawkeye / Royal / Saratoga (230V)	✅ Yes	230V threaded models
♨️ Ozone Treatment Systems	✅ Yes	Compatible with ozone injection
♨️ Saltwater Spa Systems	✅ Yes	Saltwater compatible
🛁 3/4″ Barb Plumbing	❌ No — Wrong Type	Use 6050U0016 / 73979 (3/4″ barb, 230V)
🛁 1″ Barb Plumbing	❌ No — Wrong Type	Use 6050U0010 / 74079 (1″ barb, 230V)
🛁 115V Spa	❌ No — 230V Only	Use 6050U0013 / 74009 (3/4″ MPT, 115V)
🛁 1-1/2″ MBT Plumbing	❌ No	Use Gecko Aqua-Flo CMHP for 1-1/2″ connections

❓ Frequently Asked Questions

Q: What is MPT and how does it differ from barb connections? A: MPT stands for Male Pipe Thread (also called NPT — National Pipe Thread). The male threads screw into a female threaded fitting for a secure, permanent connection. Barb connections slide into flexible hose and are secured with a hose clamp. MPT and barb are NOT interchangeable — you must match the connection type to your spa’s existing plumbing.

Q: What is the physical outside diameter of the threads? A: 3/4″ MPT threads have a physical outside diameter of 1″. This is standard for all 3/4″ NPT pipe threads — the 3/4″ refers to the nominal pipe size, not the physical measurement.

Q: What is the flow rate of this pump? A: Maximum 14 GPM with a maximum head of 20 feet. Designed for continuous 24/7 low-flow heater spa circulation.

Q: What is the wattage? A: 65W at 230V. Ultra-low energy consumption for pennies-per-day continuous 24/7 operation.

Q: Does this pump come with a power cord? A: Yes. A 4-foot bare cord is included with 3 wires and NO connectors on the cord end. Wire directly to your spa control system connecting Hot, Hot, and Ground.

Q: How do I wire this 230V pump? A: Connect Hot, Hot, and Ground — there is NO neutral wire on 230V circuits. Both hot wires carry voltage. Have all work performed by a licensed electrician.

Q: Can I use this pump if my spa has barb connections? A: No. Threaded (MPT) and barb connections are NOT interchangeable. For 3/4″ barb on 230V, use 6050U0016 / 73979. For 1″ barb on 230V, use 6050U0010 / 74079.

Q: Do I need Teflon tape on the threads? A: Yes. Apply Teflon tape or pipe thread sealant to the male threads before screwing into female fittings. Hand-tighten first, then wrench-tighten 1–2 additional turns. Do NOT over-tighten — the thermoplastic wet end can crack under excessive torque.

Q: What is the difference between this pump and the 6050U0013? A: They are the identical E-10 pump body and threaded wet end — same motor platform, same protection features, same connections. The ONLY difference is the voltage winding: 6050U0014 is 230V (this pump), 6050U0013 is 115V. Choose based on your spa’s electrical supply.

Q: Does this replace the SM909-NT 230V series? A: Yes. The E-10 directly replaces all SM909-NT 230V threaded models, including the 909-NT-18 (6917) and 909-NT-26 (6918), consuming up to 40% less energy.

Q: Does this pump have a shaft seal? A: No. The E-10 uses a magnetically driven impeller that completely eliminates the mechanical shaft seal. There is no seal to leak, wear out, or replace.

Q: Can I mount this pump vertically? A: Yes. The E-10 can be mounted horizontally or vertically with the motor end pointing down. Do NOT mount with motor end up.

Q: Is this pump quiet? A: Yes, extremely. The E-10 operates at under 50 dB — virtually silent during operation.

Q: Do I need a GFCI breaker? A: Yes. GFCI protection is required by the National Electrical Code (NEC) for all hot tub and spa installations, including 230V circuits.

Q: What warranty is included? A: 1-year manufacturer warranty from Laing Thermotech / Xylem. Contact Parts4Tubs for full warranty terms and support.

🏆 Why Choose the Laing E-10 EcoCirc 6050U0014

• ✅ 3/4″ MPT Threaded Connections — Secure, leak-resistant permanent plumbing for 230V threaded spa systems
• ✅ ECM Motor Technology — 40% more energy-efficient than the SM909/SM1212 series it replaces
• ✅ Built-In Dry Run Protection — Embedded microprocessor prevents costly damage from operating without water
• ✅ Soft Start Technology — Gradual 3-second startup reduces mechanical stress and extends pump life
• ✅ Magnetically Driven Open Impeller — NO shaft seal to leak or replace, PLUS clog-resistant PPO construction
• ✅ Whisper-Quiet Operation — Under 50 dB for virtually silent running
• ✅ Direct SM909-NT 230V Replacement — Drop-in for 909-NT-18 (6917) and 909-NT-26 (6918)
• ✅ Horizontal or Vertical Mounting — Flexible installation with 4 discharge angle positions
• ✅ 50/60 Hz Compatible — Works on both domestic and international electrical systems
• ✅ Compact and Lightweight — Under 5 lbs fits tight equipment compartments
• ✅ Laing Thermotech / Xylem Quality — Decades of proven reliability in spa circulation
• ✅ 1-Year Manufacturer Warranty — Full coverage for peace of mind

🤝 Why Buy from Parts4Tubs

• ✅ Fast shipping across the United States
• ✅ Expert advice from spa and hot tub specialists
• ✅ Competitive pricing
• ✅ Full warranty support
• ✅ Hassle-free returns
• ✅ Complete Laing E-10 family in stock — all voltages (115V, 230V), all connection types (barb, MPT)
• ✅ Dedicated customer service team

✨ Summary

The Laing E-10 EcoCirc 6050U0014 is a 230V spa circulation pump with 3/4″ MPT threaded connections — the high-voltage companion to the 6050U0013. Featuring advanced ECM technology at just 65W, secure threaded plumbing with 1″ physical OD, built-in dry run protection, soft start, a magnetically driven clog-resistant open impeller with no shaft seal, and a 4-foot bare cord included, this pump directly replaces all SM909-NT 230V threaded series models. Compatible with Sundance, Jacuzzi, L.A. Spas, Marquis, and other brands using 230V threaded circulation plumbing. Order from Parts4Tubs today for fast shipping and expert support.