The Zoeller 912-0007 automatic sewage ejector package system delivers factory-assembled basement wastewater management through its distinctive 18-inch by 30-inch polyethylene structural foam basin paired with the proven M264 cast iron sewage pump. This complete simplex sewage package arrives fully plumbed with internal 2-inch PVC discharge piping, eliminating field assembly errors while providing immediate installation readiness for residential basement bathroom applications and below-grade plumbing fixtures requiring lift capabilities from 5 to 18 feet of head.
Manufacturing precision defines this MPN 912-0007 system, where Zoeller's rotational molding process creates the basin's uniform wall thickness and integrated structural integrity. The package includes a polyfoam lid with pre-sealed cord penetration and factory-drilled 2-inch vent opening, plus the complete M264 pump assembly featuring its signature engineered plastic vortex impeller designed specifically for passing 2-inch spherical solids through the 4/10 horsepower motor's pumping chamber without clogging or downtime.
Integrated Basin Construction: 18x30 Polyethylene Structural Foam Engineering for Flush-Grade Burial
The 18-inch diameter by 30-inch depth basin configuration in this 912-0007 system utilizes high-density polyethylene structural foam (PSF) construction that provides superior resistance to underground soil pressures and hydrostatic forces compared to conventional thin-wall polyethylene basins. Structural foam molding injects nitrogen gas during the manufacturing process, creating a dense outer skin with a cellular core that dramatically increases rigidity while maintaining chemical resistance to raw sewage constituents, septic effluent, and groundwater minerals that degrade inferior basin materials over decades of continuous exposure.
Installation specifications for this exact 18x30 basin dimension allow flush-to-grade burial where only the polyfoam access cover remains visible after concrete floor finishing, meeting International Plumbing Code Section 712.3.2 requirements for gas-tight removable covers. The basin's 30-gallon total capacity delivers adequate storage volume for typical basement bathroom toilet flushing cycles, laundry discharge surges, and sink drainage from fixtures located below the main sewer line elevation, while the 18-inch diameter accepts the M264 pump's footprint plus necessary float switch clearance without requiring oversized excavation in finished basement floors.
M264 Waste-Mate Pump Integration: Cast Iron Motor Housing with Oil-Filled Heat Dissipation
This 912-0007 package incorporates Zoeller's Model M264 automatic sewage pump, featuring a 4/10 HP (0.4 horsepower) motor rated at 115 volts, 9.4 amperes, single-phase 60 Hz operation with 1725 RPM output. The pump's cast iron switch case, motor housing, and pump housing construction provides corrosion resistance through powder-coated epoxy finishing, while the oil-filled motor chamber ensures optimal heat dissipation that prevents thermal overload during extended pumping cycles when basement bathroom fixtures generate continuous wastewater flow exceeding the pump's on-off cycling patterns.
Performance specifications for the M264 pump in this preassembled system deliver 90 gallons per minute (GPM) at 5 feet of head, 60 GPM at 10 feet of head, and 23 GPM at 15 feet of head, with maximum shutoff head reaching 18 feet vertical lift. These flow characteristics make the 912-0007 ideal for residential basement bathroom ejector applications where toilet, shower, and sink discharge requires lifting wastewater 8 to 12 feet to reach the main building drain connection point, meeting the California Plumbing Code Section 710.3 minimum requirement of 20 GPM discharge capacity for sewage ejector systems receiving toilet waste.
Vortex Impeller Design: Engineered Plastic Non-Clog Technology for 2-Inch Solids Passage
The M264 pump's signature vortex impeller represents the defining feature separating this 912-0007 system from conventional sewage pumps that utilize traditional semi-open or closed impeller designs prone to jamming from bathroom tissue, hygiene products, and organic solids. Manufactured from corrosion-resistant engineered plastic, the vortex impeller creates a spinning water column that induces centrifugal force, allowing 2-inch diameter spherical solids to pass through the pump chamber without direct contact with impeller blades, dramatically reducing clogging incidents that cause pump failures and basement flooding emergencies.
The impeller's smooth surface finish and precise clearance relationship to the cast iron pump housing enables continuous passage of raw sewage containing suspended solids, grease particles, and fibrous materials from laundry detergent discharge. This vortex technology eliminates the expensive service calls associated with ragging conditions where conventional impellers become wrapped with fabric materials and hair strands, particularly in basement bathroom applications serving residential families where shower drainage and washing machine connections introduce challenging wastewater compositions into the ejector pit daily.
Float Switch Mechanism: Solid Polypropylene Wide-Angle Mechanical Operation with Stainless Steel Guard
Automatic operation in the 912-0007 system relies on the M264 pump's integrated mechanical float switch featuring a solid, buoyant white polypropylene float that cannot become waterlogged or lose buoyancy even after years of submersion in raw sewage and aggressive wastewater chemicals. The float-operated, 2-pole mechanical switch incorporates preset snap-action activation that eliminates field adjustment requirements, with the switch turning the pump on when rising wastewater lifts the float to approximately 10 inches above the basin bottom, then shutting off when the pumping cycle drops the water level sufficiently.
The stainless steel float guard surrounding the polypropylene float prevents accumulation of solid materials and toilet paper that could interfere with float movement, ensuring reliable activation every time basement bathroom fixtures discharge into the ejector pit. This guard design, combined with the stainless steel switch arm and mounting hardware, provides corrosion-proof operation that maintains switching precision despite continuous exposure to hydrogen sulfide gases, methane buildup, and the acidic conditions present in sewage ejector applications where pH levels fluctuate between 6.0 and 8.5 depending on household water chemistry.
Pre-Plumbed Discharge Configuration: Internal 2-Inch PVC Piping with Factory-Installed Weep Hole
Factory installation of internal 2-inch schedule 40 PVC discharge piping distinguishes this 912-0007 package from field-assembled sewage systems requiring on-site plumbing connections prone to installation errors and leak failures. The discharge pipe extends vertically through the polyfoam basin cover, featuring a pre-drilled 3/16-inch weep hole positioned above the pump shutoff level that prevents airlocking conditions when the check valve closes, eliminating the water hammer noise and pressure surges that damage piping connections in basement sewage applications lacking proper air release mechanisms.
The 2-inch NPT vertical female discharge connection accommodates standard pressure-rated PVC fittings and flexible rubber coupling assemblies, meeting the International Residential Code Section P3007.3.5 requirement for proper connection to building drain systems. This 2-inch discharge diameter matches the M264 pump's outlet size, maintaining flow velocity that prevents solids settlement in horizontal discharge runs while supporting the system's 90 GPM maximum flow rate without excessive friction losses that reduce pumping efficiency and increase electrical consumption during high-volume discharge events.
Basin Cover Design: Polyfoam Lid with Cord Seal & Pre-Drilled Vent Opening for Code Compliance
The polyethylene structural foam cover included with this 912-0007 system provides gas-tight sealing that prevents sewer gas escape and methane odor infiltration into finished basement living spaces. Factory installation includes a cord seal grommet that creates a waterproof penetration for the M264 pump's 10-foot electrical power cord, eliminating the improvised cord routing methods that compromise basin cover integrity and violate building code requirements for sealed ejector pit covers mandating containment of dangerous sewer gases including hydrogen sulfide and methane.
A pre-drilled 2-inch vent hole in the polyfoam cover accepts standard PVC vent piping connections required by the Uniform Plumbing Code Section 710.4 for proper pressure equalization during pump discharge cycles. This vent connection typically extends vertically through basement ceiling joists and connects to the home's main plumbing vent stack at least 6 inches above the highest fixture flood level rim, or routes independently through the roof structure when local code authorities mandate separate venting for sewage ejector systems serving basement bathroom toilet installations.
Installation Requirements: Flush-to-Grade Burial with 22-Inch Height & 36-Inch Width Clearance Specifications
Physical dimensions of the complete 912-0007 assembly measure 22 inches in height by 36 inches in width by 22 inches in length, requiring excavation planning that accounts for the basin depth plus adequate working clearance for pump removal during future maintenance operations. The flush-to-grade burial design positions the polyfoam access cover at finished floor elevation, eliminating trip hazards and maintaining aesthetic continuity in finished basement spaces, while the 18x30 basin footprint fits between standard 16-inch on-center floor joist spacing with minimal structural modification.
Basement floor excavation for this system should extend to 32 inches below finished grade to accommodate the 30-inch basin depth plus a 2-inch crushed stone or concrete pad base that provides stable pump support and prevents basin settling from soil consolidation. The installation location must allow gravity drainage from all connected basement bathroom fixtures, with inlet piping entering the basin through the factory-punched 4-inch inlet opening positioned at 10.5 inches above the basin bottom, matching standard below-slab drain tile elevation and ensuring proper pitch for waste flow into the ejector pit.
Performance Capabilities: 23-90 GPM Flow Range Across 5-18 Foot Head Applications
The M264 pump's performance curve in this 912-0007 package delivers variable flow rates matching specific installation head requirements, providing 90 GPM pumping capacity when lifting sewage 5 feet vertically, dropping to 60 GPM at 10 feet of head, and maintaining 23 GPM flow even when discharge elevation reaches 15 feet above the pump inlet. These graduated performance characteristics enable proper system sizing for diverse basement bathroom configurations, from shallow installations lifting wastewater just above basement floor level to deeper ejector pits serving sub-basement mechanical rooms requiring maximum vertical lift capabilities.
Maximum shutoff head of 18 feet establishes the upper limit for installation applications, representing the vertical elevation where discharge pressure exactly equals pump pressure and flow ceases. Practical installations should maintain working head below 16 feet to ensure adequate flow velocity for solids transport through horizontal discharge piping, meeting the hydraulic requirements for 2-inch pressure pipe conveying sewage that must achieve minimum 2 feet per second velocity to prevent solids deposition and pipe blockage in long horizontal runs exceeding 20 feet between the ejector pit and building drain connection.
Electrical Specifications: 115V Single-Phase Operation with Hermetically Sealed Thermal Overload Protection
The M264 pump operates on standard 115-volt household electrical service, drawing 9.4 amperes during normal pumping cycles, making this 912-0007 system compatible with dedicated 15-ampere branch circuits without requiring specialized electrical panels or voltage transformers. Single-phase 60 Hz motor operation matches residential power supply characteristics, while the 1725 RPM motor speed provides optimal balance between pumping efficiency and mechanical reliability for continuous-duty sewage applications where basement bathroom usage patterns create frequent on-off cycling throughout daily household activities.
Hermetically sealed, automatic-reset thermal overload protection safeguards the M264 motor from burnout damage if pump jamming, impeller obstruction, or prolonged running against a closed valve creates excessive current draw. This built-in protection automatically disconnects motor power when winding temperature exceeds safe operating limits, then resets once cooling occurs, eliminating nuisance circuit breaker trips while preventing catastrophic motor failure that would require complete pump replacement and expose basement areas to sewage backup flooding during repair downtime.
Bearing System: Upper & Lower Sleeve Bearings Operating in Oil Bath Lubrication
The M264 pump employs upper and lower sleeve bearing construction running in a bath of oil that provides continuous lubrication and cooling throughout the bearing surfaces supporting the motor shaft and impeller assembly. This oil-filled motor design ensures bearing longevity exceeding 15 years in typical residential sewage ejector applications, far surpassing ball bearing pumps that experience premature failure from inadequate lubrication when sewage contaminants penetrate bearing seals and introduce abrasive particles into rolling element surfaces.
Sleeve bearing operation in oil bath conditions maintains consistent shaft alignment that prevents vibration and mechanical noise transmission through the basin structure into finished basement living spaces. The bearing system's tolerance for minor shaft deflection accommodates the hydraulic forces generated during high-volume pumping cycles without inducing bearing wear or shaft misalignment, contributing to the M264's reputation for quiet operation and extended service life in basement bathroom sewage applications where pump reliability directly impacts homeowner quality of life and property value.
Check Valve Requirement: External Installation Necessity for Backflow Prevention & Cycle Reduction
This 912-0007 package requires field installation of an external check valve in the discharge piping immediately above the basin cover, preventing backflow that would otherwise drain the vertical discharge pipe back into the ejector pit after each pumping cycle. Check valve installation reduces unnecessary pump cycling that accelerates float switch wear and motor contact degradation, while preventing the characteristic "thump" noise when wastewater columns drop back through the piping and impact the impeller housing at the end of each discharge event.
Proper check valve selection should specify quiet-closing designs featuring spring-loaded flappers or silent check mechanisms that close gradually as forward flow decelerates, eliminating water hammer conditions that create pressure spikes exceeding 150 PSI in the discharge piping. The check valve location above the polyfoam cover enables accessible maintenance and replacement without basin entry, meeting plumbing code requirements for valve accessibility while ensuring the check valve remains above the maximum high water level to prevent submersion and consequent valve failure from sewage solids fouling the seating surfaces.
Material Construction: Cast Iron Components with Stainless Steel Hardware & Powder Coat Protection
Cast iron construction throughout the M264 pump's critical components—switch case, motor housing, and pump housing—provides superior strength and dimensional stability compared to thermoplastic sewage pumps that experience housing deformation from internal pressure fluctuations and elevated operating temperatures. The cast iron's thermal mass absorbs and dissipates motor heat efficiently, maintaining safe operating temperatures even during extended pumping cycles when basement bathroom fixtures generate continuous wastewater flow exceeding typical intermittent usage patterns.
Powder-coated epoxy finishing applied to all cast iron surfaces establishes a chemical barrier preventing corrosion from hydrogen sulfide gases, chloride ions in wastewater, and acidic conditions present in sewage containing cleaning chemicals from laundry and bathroom fixture discharge. Complementing this corrosion protection, all external hardware including the identification tag, float guard, handle, switch arm, and mounting fasteners utilize non-corrodible stainless steel construction that maintains structural integrity and appearance throughout decades of exposure to aggressive sewage environments where zinc-plated or plain steel hardware would experience rapid deterioration.
Factory Testing Protocol: 100% Submerged Water Testing & Performance Curve Verification Before Shipment
Every 912-0007 system undergoes complete submersion testing at Zoeller's manufacturing facility, where the M264 pump operates against calibrated resistance to verify performance matches published specifications for flow rate and head pressure across the full operating range. This 100% testing protocol ensures each pump delivers exactly 90 GPM at 5 feet of head, 60 GPM at 10 feet of head, and maintains proper shutoff characteristics at maximum head elevation, providing buyers confidence that installation performance will match design calculations without field adjustment or component replacement.
Pressure testing verifies basin integrity and seal effectiveness, confirming the polyfoam cover achieves gas-tight closure and the internal discharge piping connections maintain leak-free operation under simulated pumping pressures. The factory testing process identifies manufacturing defects or assembly errors before shipment, reducing installation failures and warranty claims while ensuring professional contractors and homeowner installers receive a truly job-ready sewage ejector package that begins reliable operation immediately upon electrical connection and basin filling.
Warranty Coverage: 3-Year Limited Protection from Zoeller Company Manufacturing & Material Defects
Zoeller provides 3-year limited warranty coverage on this MPN 912-0007 system, protecting buyers against defects in materials and workmanship affecting the M264 pump components, basin structure, and factory-installed plumbing connections. This warranty period exceeds typical 1-year coverage offered on economy-grade sewage pumps, reflecting Zoeller's confidence in the manufacturing quality and component durability that enables the 912-0007 to maintain reliable operation throughout the warranty period without premature motor failures, float switch malfunctions, or basin structural problems requiring replacement.
Warranty terms typically exclude damage from improper installation, lack of required check valve installation, operation outside rated voltage parameters, or pump abuse from introduction of forbidden materials into the sewage stream including concrete, construction debris, or excessive grease quantities. Proper installation following Zoeller's published installation instructions and local plumbing code requirements ensures warranty eligibility, while regular maintenance including semi-annual pump inspection and debris removal from the basin interior maximizes service life and maintains warranty protection throughout the coverage period.
System Weight & Shipping: 75-Pound Complete Assembly Requiring Lift Gate Delivery Consideration
The complete 912-0007 package weighs approximately 75 pounds assembled, combining the 18x30 polyethylene structural foam basin weight, M264 cast iron pump mass, polyfoam cover, and internal PVC discharge piping into a single-unit shipment that requires appropriate handling during delivery and installation. This weight exceeds the 50-pound threshold where residential delivery services typically offer complimentary lift gate service, ensuring safe ground-level unloading at job sites lacking dock facilities or forklift access for heavy plumbing equipment receiving.
Professional contractors appreciate the manageable 75-pound weight that allows two-person handling for stairway navigation into basement installation locations without requiring mechanical lifting equipment or rigging systems. The preassembled configuration eliminates component packaging waste and reduces job site assembly time to zero, allowing installers to proceed directly to excavation, basin placement, and plumbing connections without the delays associated with field assembly of separate basin, pump, and piping components prone to missing hardware and installation errors.
Application Suitability: Residential Basement Bathroom, Laundry Room & Below-Grade Fixture Sewage Management
The 912-0007 system specifically targets residential basement bathroom applications where toilet, shower, lavatory sink, and laundry tub installations require sewage pumping to reach main building drain connections located above basement floor elevation. The M264 pump's 2-inch solids-handling capability accommodates typical residential toilet waste, bathroom tissue, and personal hygiene products, while the 90 GPM peak flow rate manages simultaneous fixture usage including toilet flushing combined with shower drainage or washing machine discharge cycles common in active household basement activity.
This sewage ejector package proves ideal for finished basement conversions adding rental suite bathrooms, home theater wet bars with ice makers and bar sinks, elderly parent in-law apartments requiring accessible bathroom facilities, or basement home office installations incorporating half-bath convenience for occupants working from home. The flush-to-grade installation maintains finished floor aesthetics in carpeted or tiled basement spaces, while the polyfoam cover's load-bearing capacity supports normal foot traffic across the access point without special reinforcement or protective covering.
Plumbing Code Compliance: Meeting IPC 712 & UPC 710 Standards for Sewage Ejector Installations
Installation of this 912-0007 system satisfies International Plumbing Code Section 712.4.1 requirements specifying minimum 20 GPM discharge capacity for sewage ejectors receiving toilet waste, with the M264 pump's 23 GPM minimum flow at 15 feet of head providing code-compliant performance even at maximum practical installation head. The 2-inch discharge pipe diameter meets residential sewage ejector sizing requirements, while the pump's ability to pass 2-inch spherical solids exceeds the code-mandated 1.5-inch solids handling for single-dwelling unit applications, providing margin for challenging waste compositions from modern low-flow toilet designs.
Uniform Plumbing Code Section 710.3 compliance requires sewage ejector installations serving toilets to maintain minimum 20 GPM capacity at the actual vertical lift height, which this system achieves across its full 5 to 18 foot head range. The gas-tight polyfoam cover with integral vent opening enables code-compliant venting connections required by Section 710.4, while the basin's structural foam construction and flush-to-grade burial design meet accessibility requirements ensuring future maintenance operations can proceed safely without confined space entry hazards or special equipment requirements.
Plumbing Supply And More provides the Zoeller 912-0007 automatic sewage ejector package system as a complete factory-assembled solution delivering immediate installation readiness for professional contractors and experienced homeowners tackling basement bathroom plumbing projects requiring reliable below-grade waste management.
The combination of Zoeller's proven M264 Waste-Mate pump technology, precision-molded 18x30 structural foam basin, and pre-installed discharge piping eliminates field assembly errors while ensuring code-compliant operation that protects basement living spaces from sewage backup disasters and property damage.
