The Zoeller MPN 267-0001 represents specialized sewage handling technology designed explicitly for residential and commercial basement applications requiring reliable 2-inch solid passage capabilities. This half-horsepower submersible pump delivers 128 gallons per minute maximum flow through its engineered plastic vortex impeller system, specifically addressing sewage ejector installations where conventional sump pump designs prove inadequate.
Manufactured with ASTM Class 25 cast iron housing construction, this Waste-Mate series model operates continuously submerged in sewage basins, effluent tanks, and elevator pit dewatering applications. The 267-0001's distinctive mechanical float switch assembly controls automatic pump activation, eliminating electronic components vulnerable to sewage environment deterioration while maintaining precise water level management across varied installation depths.
Measuring 14.28 inches in height with an 11.21875-inch length and 13.0625-inch width footprint, this specific pump configuration fits standard residential sewage basins without requiring specialized excavation modifications. The integrated 2-inch NPT discharge connection accommodates direct piping to municipal sewage systems or septic tanks, handling spherical solids up to two inches in diameter through its non-clogging impeller geometry. Operating on single-phase 115-volt electrical supply drawing 9.4 amperes, the 267-0001 delivers maximum 20-foot vertical head lift with 10-foot power cord standard length, providing installation flexibility across basement configurations without immediate junction box requirements.
ASTM Class 25 Cast Iron Housing Construction & Corrosion-Resistant Coating Technology
The 267-0001 employs precision-cast iron switch case and pump housing manufactured to ASTM Class 25 metallurgical specifications, providing superior structural integrity against sewage environment chemical exposure. Unlike thermoplastic housing alternatives common in residential sump pumps, this cast iron construction maintains dimensional stability under continuous 150 PSI maximum pressure conditions typical in sewage ejector discharge scenarios. The molecular density of Class 25 cast iron creates inherent resistance to hydrogen sulfide corrosion, methane gas exposure, and bacterial biofilm deterioration that progressively weaken polymer housings in long-term sewage contact.
Factory-applied powder-coated epoxy finish on all cast iron surfaces establishes multi-layer protection against electrochemical corrosion in groundwater and sewage environments. This coating process electrostatically bonds epoxy particles to cast iron substrate at temperatures exceeding 400 degrees Fahrenheit, creating molecular fusion that prevents coating delamination under hydrostatic pressure cycling. The specific epoxy formulation used on model 267-0001 components demonstrates exceptional resistance to sewage pH variations between 6.0 and 9.5, maintaining coating adhesion where conventional paint finishes experience rapid degradation.
The cast iron base plate geometry of this model distributes pump weight across 13.0625-inch width dimension, preventing basin floor penetration in cured concrete installations while maintaining stability during high-flow discharge events. This weight distribution becomes critical in sewage ejector applications where accumulated solids create uneven loading conditions potentially causing pump tilting with lighter aluminum or plastic base designs. The 267-0001's cast iron construction ensures the pump remains vertically oriented throughout its operational lifespan, preventing float switch malfunction caused by pump body displacement.
Engineered Plastic Vortex Impeller with Strategic Metal Insert Reinforcement
The 267-0001 utilizes an engineered thermoplastic impeller featuring precision-molded metal inserts that create centrifugal force patterns specifically designed to pass 2-inch spherical solids without blade contact. This vortex impeller geometry generates a swirling hydraulic pattern within the volute chamber, suspending solid materials in rotational flow while liquid components undergo centrifugal acceleration toward the discharge port. Unlike conventional closed impeller designs that require blade-to-solid contact for material conveyance, this vortex configuration maintains clearance between impeller surfaces and passing solids, dramatically reducing clogging incidents in residential sewage applications.
Metal inserts embedded within the plastic impeller structure concentrate rotational mass at critical stress points, enabling 1,750 RPM operating speeds without structural deformation under load. These strategically positioned metallic reinforcements counteract centrifugal forces that would otherwise cause thermoplastic creep deformation in continuous-duty sewage pumping scenarios. The hybrid construction approach combines plastic's inherent chemical resistance to sewage constituents with metal's mechanical strength under rotational stress, creating an impeller assembly that maintains dimensional accuracy throughout the 3-year warranty period.
The specific impeller diameter and blade pitch angles engineered into the 267-0001 generate hydraulic efficiency optimized for 128 GPM flow rates at 150 PSI discharge pressures. This performance specification directly correlates to typical residential sewage ejector requirements where basement fixtures drain into holding basins requiring vertical lift to municipal sewer connections. The impeller's vortex flow pattern enables efficient handling of toilet paper, feminine hygiene products, and organic waste materials commonly encountered in sewage applications, while maintaining clearances that prevent fibrous material wrapping around blade surfaces.
Mechanical Float Switch Assembly & Stainless Steel Actuation Hardware
Model 267-0001 incorporates a two-pole mechanical switch activated by solid polypropylene float movement along a stainless steel float guard and switch arm assembly. This mechanical actuation system eliminates electronic pressure sensors, capacitance switches, and mercury tilt switches prone to failure in sewage environment electromagnetic interference and chemical exposure. The solid polypropylene float construction prevents water absorption that causes float waterlogging failures common with foam-core float designs, ensuring consistent buoyancy characteristics throughout operational lifespan.
The stainless steel float guard prevents sewage solids and debris accumulation from interfering with float travel, maintaining switch activation reliability in high-solids sewage applications. This guard structure creates a protective zone around the float mechanism while allowing free water flow for accurate level sensing. The switch arm pivot mechanism employs corrosion-resistant materials that maintain smooth actuation through thousands of pump cycles without binding or mechanical wear that degrades switch timing accuracy in aging sewage pumps.
The mechanical switch configuration provides positive on/off control with audible feedback indicating pump activation, allowing maintenance personnel to verify operational status without electrical testing equipment. This switch design operates independently of water conductivity variations caused by sewage composition changes, ensuring reliable activation across varied waste stream characteristics. The NEMA 6 submersible rating of the switch assembly certifies complete protection against water ingress under continuous submersion conditions, preventing internal contact corrosion that causes premature switch failure.
2-Inch NPT Discharge Configuration & High-Pressure Check Valve Integration
The 267-0001 features factory-machined 2-inch National Pipe Thread discharge connection engineered for direct coupling to Schedule 40 PVC discharge piping without adapter fittings. This thread specification provides mechanical grip strength exceeding 1,500 pounds radial load capacity, preventing connection separation under hydraulic surge conditions common when pumps activate against closed check valves. The precision thread geometry eliminates excessive thread compound requirements while establishing leak-proof seals using standard PTFE tape application, simplifying installation for contractors and reducing callback incidents from connection failures.
The discharge port geometry transitions from impeller volute to 2-inch pipe diameter using optimized radius curves that minimize turbulence and pressure loss during high-flow discharge events. This internal flow path engineering maintains discharge velocity sufficient for solid material conveyance through vertical piping runs without settling or accumulation. The smooth transition surfaces prevent fibrous material snagging that initiates clog formation in discharge plumbing, a common failure mode in sewage systems using pumps with abrupt diameter transitions.
Integration with swing-type check valves rated for sewage service becomes essential for 267-0001 installations, preventing discharge line backflow that causes premature pump restart cycling. The pump's 150 PSI maximum pressure rating accommodates check valve closure resistance while maintaining sufficient discharge force to clear accumulated solids in vertical piping. Proper check valve selection requires spring-loaded designs that close before reverse flow initiates, protecting the impeller assembly from backflow-induced rotation damage.
Single-Phase 115-Volt Motor Design & 9.4-Ampere Electrical Requirements
The 267-0001's half-horsepower motor operates on standard residential 115-volt single-phase electrical supply, eliminating dedicated circuit requirements in typical basement electrical panel configurations. This voltage specification allows connection to 15-ampere or 20-ampere branch circuits serving basement areas without voltage conversion equipment or subpanel installations. The motor's 9.4-ampere draw remains well below circuit capacity thresholds, permitting simultaneous operation of basement lighting and other receptacles without breaker tripping concerns.
Single-phase induction motor construction provides starting torque sufficient to overcome sewage density variations and initial impeller loading without auxiliary starting capacitors or phase conversion equipment. The motor's thermal protection integrates automatic overload cutoff that deactivates the pump when winding temperatures exceed safe operating limits, preventing insulation degradation from prolonged operation against discharge obstructions. This thermal protection resets automatically when motor temperature returns to normal ranges, resuming pump operation without manual intervention.
The 1,750 RPM motor speed establishes optimal balance between hydraulic efficiency and mechanical reliability for sewage handling applications. Higher-speed motors generate excessive vibration and bearing wear when handling sewage's variable density characteristics, while lower speeds sacrifice discharge pressure necessary for vertical lift requirements. The 267-0001's speed specification directly correlates to impeller diameter and blade geometry, creating hydraulic performance specifically matching residential sewage ejector duty cycles.
10-Foot Power Cord Assembly & Waterproof Cable Entry Protection
Model 267-0001 includes factory-installed 10-foot power cord with integrated strain relief and epoxy-sealed cable entry housing designed for permanent sewage environment submersion. This cord length accommodates standard sewage basin depths between 24 and 48 inches while allowing pump removal for maintenance without electrical disconnection at junction boxes. The cable entry seal employs dual-compression grommet design with secondary pressure sealing that prevents moisture migration along conductor insulation, a failure mode causing motor winding short circuits in pumps using single-seal cable entries.
Heavy-duty conductor insulation rated for continuous sewage chemical exposure maintains electrical integrity throughout the warranty period without jacketing deterioration. The specific insulation compound resists hydrogen sulfide penetration, bacterial biofilm adhesion, and plasticizer leaching that degrades standard electrical cable insulation in sewage applications. Ground conductor continuity ensures electrical safety compliance with National Electrical Code requirements for permanently installed sewage pumping equipment.
The power cord's three-prong grounded plug configuration requires connection to GFCI-protected receptacles as mandated by modern electrical codes for wet location equipment. This ground-fault protection provides critical safety shutdown if insulation breakdown creates current leakage paths through sewage-wetted pump components. Proper electrical installation requires dedicated receptacle mounting above maximum sewage basin flood levels, preventing submersion-related electrical hazards during pump failure scenarios.
Maximum 128 GPM Flow Capacity & 20-Foot Vertical Head Lift Performance
The 267-0001 delivers maximum flow capacity of 128 gallons per minute when pumping against minimal discharge resistance, providing sufficient capacity for residential sewage ejector applications serving up to three full bathrooms. This flow specification correlates directly to peak fixture discharge rates when multiple toilets, showers, and washing machines drain simultaneously into the sewage basin. The pump's capacity exceeds minimum plumbing code requirements for residential sewage ejector systems, ensuring adequate reserve capacity during high-usage periods without basin overflow incidents.
Maximum vertical head lift of 20 feet enables the 267-0001 to handle typical basement-to-municipal-sewer elevation differences encountered in residential construction. This lift capacity accounts for friction losses in horizontal discharge piping while maintaining sufficient discharge velocity to convey solid materials through pipe bends and elevation changes. The pump's performance curve demonstrates predictable flow reduction as head pressure increases, allowing contractors to calculate expected flow rates at specific installation elevations using manufacturer-provided pump curves.
The hydraulic relationship between flow and pressure in the 267-0001's performance envelope requires proper discharge piping sizing to optimize pump efficiency. Undersized discharge pipes create excessive friction losses that reduce effective flow capacity and increase motor loading, while oversized piping allows solids settling in horizontal runs. The 2-inch discharge connection specification balances these considerations for typical residential sewage ejector installations, maintaining transport velocity above 2 feet per second required to prevent solids deposition.
Automatic Operation Cycle & Float-Controlled Water Level Management
The 267-0001's automatic operation eliminates manual pump activation through float-controlled switching that responds to rising sewage levels in the basin. The float rises with increasing water level until reaching the preset activation point, closing the mechanical switch contacts that energize the motor. Pump operation continues until falling water level lowers the float to the deactivation point, opening switch contacts and stopping the motor. This hysteresis between activation and deactivation prevents rapid cycling that accelerates motor wear and reduces operational lifespan.
Float switch adjustment capability allows customization of pump on/off levels to match specific basin geometry and desired water level ranges. Proper float adjustment ensures pump activation before sewage reaches basin overflow elevation while maintaining sufficient water depth for pump cooling and lubrication. The mechanical switch design permits field adjustment without specialized tools or electrical expertise, enabling contractors to optimize pump performance for each installation's unique requirements.
The automatic operation design requires proper basin sizing to accommodate pump displacement volume and prevent short-cycling degradation. Minimum basin volume calculations must account for the water volume pumped during each activation cycle, ensuring adequate time between pump starts to prevent motor overheating. The 267-0001's mechanical switch design inherently provides longer cycle times than electronic switches, promoting motor longevity in properly sized sewage ejector systems.
Sewage Ejector Application Specialization & Basement Fixture Integration
The 267-0001 serves specifically as a sewage ejector pump for basement bathroom installations where gravity drainage to municipal sewers proves impossible due to elevation constraints. This application requires collection of toilet, shower, sink, and washing machine discharge in a sealed sewage basin, with pump-driven conveyance to sewer connections located above basement floor elevation. The pump's 2-inch solids handling capability accommodates waste materials from low-flow toilets and modern water-efficient fixtures without clog formation.
Integration with properly vented sewage basins maintains atmospheric pressure balance essential for fixture trap seal preservation and odor control. The basin vent connection prevents vacuum formation during pump discharge cycles that could siphon fixture traps and admit sewer gases into living spaces. The 267-0001's discharge velocity generates sufficient air entrainment to maintain vent stack flow without separate air admittance valve requirements in compliant plumbing installations.
Basement wet bar, utility sink, and laundry facility additions frequently necessitate sewage ejector installations when existing drainage systems cannot accommodate additional fixture loads. The 267-0001's capacity and reliability suit these retrofit applications where excavation constraints limit basin size and pump access. The pump's compact footprint and automatic operation enable concealed installations in finished basements without compromising living space functionality.
Effluent Pump Applications & Septic System Discharge Capabilities
Beyond sewage ejector service, the 267-0001 functions effectively as an effluent pump for septic tank discharge to elevated drain fields or municipal sewer connections. Effluent pumping applications involve already-processed wastewater with reduced solids content compared to raw sewage, placing lower clogging demands on the pump's impeller system. The pump's vortex impeller design handles septic tank effluent's remaining suspended solids without performance degradation or maintenance frequency increases.
Septic system dosing applications benefit from the 267-0001's predictable flow characteristics and automatic operation, delivering consistent effluent volumes to drain field distribution boxes. Proper dosing maintains even distribution across drain field laterals, preventing overloading of specific zones that causes premature system failure. The mechanical float switch enables simple timer integration for scheduled dosing cycles when required by local health department regulations.
The pump's chemical-resistant construction tolerates biological treatment chemicals and pH fluctuations common in septic effluent streams. The cast iron housing and plastic impeller combination resists corrosion from anaerobic digestion byproducts including hydrogen sulfide and organic acids. This material selection ensures reliable long-term performance in septic applications where chemical exposure exceeds municipal sewage system conditions.
Elevator Pit Dewatering & Commercial Groundwater Management Systems
The 267-0001 addresses elevator pit water accumulation in commercial buildings where groundwater seepage and condensation require continuous removal to prevent hydraulic elevator system interference. Elevator pit applications demand reliable automatic pump operation without maintenance personnel monitoring, making the mechanical float switch's proven reliability essential for uninterrupted building operations. The pump's submersible design allows permanent installation below elevator equipment without space conflicts.
Commercial basement sump applications benefit from the 267-0001's cast iron construction and higher discharge pressures compared to residential pedestal sump pumps. The pump handles contaminated groundwater containing fine sediments, construction debris, and organic materials without clogging incidents common in residential sump pumps with restrictive intake designs. The 2-inch discharge connection accommodates long horizontal runs to building perimeter discharge points without excessive friction losses.
The pump's 115-volt single-phase power requirement simplifies electrical installations in commercial facilities, eliminating three-phase motor starters and dedicated electrical panels. This voltage specification allows connection to existing receptacle circuits in mechanical rooms and basement areas, reducing installation costs compared to industrial pumps requiring 208-volt or 480-volt three-phase power supplies.
3-Year Limited Warranty Coverage & Zoeller Quality Assurance Standards
Model 267-0001 includes manufacturer's 3-year limited warranty protecting against defects in materials and workmanship under normal sewage pumping applications. This warranty duration exceeds industry standard 1-year coverage common with residential sewage pumps, reflecting Zoeller's confidence in the pump's design integrity and component quality. Warranty service includes pump repair or replacement at manufacturer's discretion, with coverage requiring proper installation according to provided instructions and application within specified parameters.
Every 267-0001 unit undergoes factory submersion testing before shipment, verifying mechanical operation, switch function, and seal integrity under simulated operating conditions. This quality control process identifies manufacturing defects and assembly errors that could cause premature field failures, ensuring delivered pumps meet performance specifications. The testing protocol includes motor current draw verification, discharge flow measurement, and pressure testing of sealed components.
Warranty coverage requires installation by qualified plumbing contractors following local plumbing codes and manufacturer specifications. Improper installation including inadequate basin sizing, incorrect electrical connections, or discharge piping errors void warranty protection. The warranty specifically excludes damage from debris accumulation, chemical exposure beyond normal sewage constituents, and operation outside specified voltage and pressure ranges.
Code Compliance & Plumbing Installation Standard Requirements
Installation of the 267-0001 must comply with International Plumbing Code requirements for sewage ejector systems including minimum basin capacity, venting provisions, and backflow prevention. Local plumbing codes often incorporate IPC standards with jurisdiction-specific amendments addressing sewage pump installations in residential and commercial applications. Contractors must verify current code requirements before installation to ensure system approval by local building departments.
National Electrical Code Article 680 provisions govern electrical installations for sewage pumps, requiring GFCI protection, proper grounding, and receptacle mounting above potential flood levels. Electrical inspectors verify compliance with these safety requirements before issuing occupancy permits for new construction and renovation projects. The 267-0001's electrical specifications support NEC-compliant installations without specialized equipment or voltage modifications.
Some jurisdictions restrict effluent pump applications to systems where solids reduction occurs upstream, requiring confirmation that 267-0001 installations meet local health department septic system regulations. States with stringent septic system oversight may mandate specific pump types or installation methods for effluent dosing applications. Contractors should consult local health departments before specifying the 267-0001 for septic system installations in regulated areas.
Plumbing Supply And More provides the Zoeller 267-0001 as part of our comprehensive sewage and water management solution offerings, backed by technical expertise and genuine manufacturer warranty support for residential and commercial plumbing professionals.
