Milan’s Wastewater Handbook Milan Supply Company’s reputation is based on quality products, competitive prices, and dedication to outstanding service. Product lines that encompass Wastewater Pumps and Accessories, Control Panels, Wastewater Treatment Systems and Dispersal Field accessories, point to our commitment to the industry. Milan Engineered Systems, a division of Milan Supply Company, focuses on the water resource markets.
Table of Contents PRODUCTS Goulds Pumps -------------------------------------------------------------------------------- 4 - 7 Myers Pumps ------------------------------------------------------------------------------- 8 - 12 Sta-Rite Pumps --------------------------------------------------------------------------------- 13 Culvert Pipe (Poly / Steel) ------------------------------------------------------------------- 13 Orenco Systems Products--------------------------------------- ------------------------
Milan Supply Company / Milan Engineered Systems is proud to present “Milan’s Wastewater Handbook”. This reference lists products that Milan markets and companies that we represent. Milan Supply strives to meet the needs of the wastewater market while partnering with health departments, designers and contractors. Please review and contact Milan for your wastewater equipment and supply needs.
SUMP PUMPS SP Submersible Sump Pumps (3/8” Solids) SPECIFICATIONS • Discharge size: 1 12” NPT. • Temperature: 104ºF (40ºC) maximum, • Solids handling: 38” maximum spherical. Model HP Volts Amps Cong. Disc. Part # SP025V .25 115 2.4 Auto. 1.5 SEW01055 SP035V .33 115 3.0 Auto. 1.5 SEW01107 ST “SumpThing” Sub Sump/Efuent (1/2” Solids) SPECIFICATIONS • Discharge size: 1 12” NPT. • Temperature: 104°F (40°C) maximum • Solids handling: 12” maximum sphere. Model HP Volts Amps Cong.
PE Submersible Efuent Pumps (1/2” Solids) SPECIFICATIONS • Discharge: 112” NPT • Temperature: 104ºF (40ºC) maximum, • Solids handling: 12” maximum sphere. Model HP Volts Amps Cong. Disc. Part # PE41M .4 115 10 Man. 1.5 SEW01111 PE51M .5 115 13 Man. 1.5 SEW01112 WE 3885 Submersible Efuent Pumps (3/4” Solids) SPECIFICATIONS • Solids handling capabilities: 34” maximum. • Discharge size: 2” NPT. 104°F (40°C) continuous.
SEWAGE PUMPS WW 3872 Sewage Pumps (2” Solids) SPECIFICATIONS - Pump: • Solids handling capability: 2” maximum. • Discharge size: 2” NPT. • Temperature: 104º F (40º C) continuous. SPECIFICATIONS-Pump: •Discharge: 2” NPT. • Temperature: 104ºF (40ºC) maximum, •Solids Handling: 2” maximum sphere. Model HP WW0511A .5 Cong. Disc. Part # 13 Auto. 2” 01136 Volts Amps 115 Model HP Volts Amps Cong. Disc. Part # PS51P1 .5 115 13 Pig.
WS 3888 D4 Sewage Pumps 4” Discharge WS 3888 D3 Sewage Pumps 3” Discharge Model HP Volts Amps Cong. Disc. Model HP Volts Amps Cong. Disc. WS1512D3 1.5 230 1PH 11 Man. 3” WS1512D4 1.5 230 1PH 13.2 Man. 4” WS1532D3 1.5 230 3PH 10 Man. 3” WS1512D4M 1.5 230 1PH 13.2 Man. 4” WS1534D3 1.5 460 3PH 5 Man. 3” WS1532D4M 1.5 230 3PH 10 Man. 4” WS1512D3M 1.5 230 1PH 11 Man. 3” WS2012D4 2 230 1PH 16.3 Man. 4” WS1532D3M 1.5 230 3PH 10 Man.
Myers offers a complete line of sump, sewage and efuent pumps. All of your wastewater pumping needs can be satised with a call to Milan Supply Company. Sump Pumps • Battery back-up sump pump for emergencies • 1/3 HP pedestal pumps • 1/4 HP through 4/10 HP submersible sump pumps • Packaged sink tank unit and utility pumps Efuent Pumps • A complete line of efuent pumps • Pumps for enhanced ow, low pressure distribution and others.
EFFLUENT PUMPS ME40 Efuent Pumps (3/4” Solids) SPECIFICATIONS: Solids Handling Capacity- 3/4” Intermittent Liquid Temp.- 140ºF Discharge (NPT)- 1 1/2” Motor Casing- Cast Iron, Volute Case- Thermoplastic Model HP Volts Amps Cong. Disc. Part # ME40AC-11 .4 115 12 Auto. 1 1/2” SEW03132 ME40MC-11 .4 115 12 Man. 1 1/2” SEW03138 ME Series Single Seal Efuent Pumps (3/4” Solids) SPECIFICATIONS: Solids Handling Capacity- 3/4” Intermittent Liquid Temp.
SEWAGE PUMPS SRM4 Series Sewage Pumps (2” Solids) SPECIFICATIONS: Solids Handling Capacity- 2” Intermittent Liquid Temp.- 140ºF Discharge (NPT)- 2” Motor Casing- Cast Iron Model HP Volts Amps Cong. Disc. Part # SRM4P-1 .4 115 12 Auto./Pig 2” SEW03170 SRM4M1C .4 115 12 Man. 2” SEW03172 SRM4PC-2 .4 230 6.0 Auto/Pig 2” SEW03175 Model HP Volts Amps Cong. Disc. Part # CMV5A-11 .5 115 12 Auto. 2” SEW03180 Cong. Disc.
Sewage Pumps Performance Chart Model HP Shut Off 5’ 10’ 15’ SRM4 .4 19’ 89 61 28 CMV5 .5 18’ 86 60 28 20’ 25’ 30’ 40’ 50’ 60’ MW50 .5 27’ 105 68 17 MWH50 .5 36’ 120 95 70 41 MW100 1 48’ 139 117 92 MW150 1.5 62’ 112 55 7 MW200 2 70’ 142 88 39 45 WHR5 .5 23’ 127 110 78 40 WHR10 1 33’ 175 169 147 125 90 31 WHR5H .5 34’ 111 95 79 60 35 WHR10H 1 46’ 145 130 114 100 84 51 WHR15H 1.
Myers Grinder & Packaged Systems Simplex / Duplex - Inside and Outside Applications Grinder Pumps • A market leader in the development and installation of grinder pump systems. • 2 HP through 15 HP grinder pumps with lifts to 260 feet and ows to 190 GPM. • Offered as complete turnkey systems or engineered to specication. • Computer system design and selection programs available for design assistance. • Explosion-proof construction available. Model Volts H.P.
Sta-Rite Pumps EC3 Series Efuent Pumps The EC3 Series pump is a small, rugged, submersible cast iron pump with a non-clog vortex impeller and solids handling capability to 3/4”. Cast Iron Submersible Efuent Pumps Model HP Volts EC333120M .33 115 Amps Cong. Disc. Part # 12 Pig. 2” SEW04050 EC6/7 Series Efuent Pumps Cast Iron Submersible Efuent Pumps Our best, the EC6/EC7/EH7 Series pump is a rugged, submersible cast Model HP Volts Amps Cong. Disc.
AdvanTex® AX20 Treatment Systems AdvanTex® Treatment Systems are the ideal solution for secondary treatment of residential wastewater ows. Orenco’s patented* AdvanTex systems consistently produce such good efuent — e.g., BOD and TSS in the 10/10 mg/L range, even under peak ow conditions — that homeowners often have them installed with subsurface drip systems for landscape irrigation. AdvanTex has been approved in most of North America, and more than 10,000 AdvanTex lters are now in use.
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Orenco Systems Inc. - STEP Systems All Orenco pump packages have these basic components: • Biotube® pump vault • Splice box • Float switch assembly • Discharge plumbing assembly • Efuent pump • Control panel Tank, risers, lids, and tank accessories must be ordered separately. Orenco pumping packages are used for pumping efuent from single or double compartment septic tanks and dosing tanks.
Pump It Up! Ideal for: • Effluent sewers • Drainfields • Textile filters • Sand filters • Peat filters • Mounds • Trickling filters • Aerobic units • Wetlands • Lagoons • Effluent irrigation • Other applications It doesn’t always flow downhill. 0RO34%0 © %FFLUENT 0UMPING 3YSTEMS ProSTEP™ Effluent Pumping Systems transport and filter septic tank effluent, protecting “downstream” components. Fully integrated package ... no “parts and pieces.
Orenco Lids Orenco Pump Vaults SEW21145 SV1548-16 Low Head Screened Pump Vault SEW20000 Lid, Fiber FL24G-4BU 4 Blt SEW21165 PVU57-2419L Biotube Vault 57” Deep SEW20010 Lid, Fiber FL24GI2-4BU 4 Blt SEW21167 PVU68-2425L Biotube Vault 68” Deep SEW20015 Lid, Fiber FL18G-4BU Lid, Fiber FL30G 30” SEW21170 Lid, Fiber FL30G12 30” W/2” Ins.
Tank & Pump Specications Tank Volume ________________ Tank Elevations: Riser Lid ________________ Tank Top ________________ Inlet Invert ______________ Outlet Invert _____________ Tank Bottom _____________ Pump Description: Make ___________________ Model __________________ GPM_______ TDH _______ HP________Volts__________ Milan Supply Company/Milan Engineered Systems Page 19
S1ROHTETMCT Panel SEW20690 S1HTETMCT Panel SEW20710 MVP-SIPTROHT/ Simplex Timer Panel SEW20722 VCOM S1ROHT Panel Simplex 115V SEW20785 S Series Simplex Control Panels Simplex control panels can be used for pressure sewer (STEP) systems, onsite treatment systems, and pump control into conventional gravity or pressurized drainelds. “S” series pump control panels are a popular choice for a simplex pump and alarm system.
Orenco offers multiple lines of controls covering a wide range of applications: • Alarm panels • Standard (electromechanical) panels • MVP (digital programmable) panels • VCOM remote telemetry panels with VeriComm® Web-based monitoring • TCOM remote telemetry panels with real-time connectivity • Custom panels Orenco Systems® specializes in designing and manufacturing control and monitoring systems for the water handling and wastewater industries.
Orenco Custom Panel Quote Request Customer Engineer Company: Your name: Phone: Fax: Address: Email: Engineer’s company: Engineer’s name: Engineer’s phone: Engineer’s fax: Engineer’s address: Engineer’s email: Project Project name: City: State: Specs available? Date needed: Primary contact: Preferred contact method: L Phone L Fax L E-mail Electrical Service Voltage: Phase: Frequency: Is 120 VAC, single-phase, 60 Hz available for control panel? Phase: Frequency: Hp: L Yes L No Pump Voltage: FLA
Grinder Packages, Retrot Kits Low Pressure Sewer Systems Complete Low Pressure Sewer Systems Options • Flex Hose or Rail System Available • Simplex and Duplex Systems Available • Multiple Basin Diameters and Basin Depths Available • Extensive Retro Fit Kit Offering Level Control Options • Pressure Activated • Float Activated Superior Control Panel Options • Remote Alarm with Battery Back-Up • Digital Display Center • Seal Fail Alarm • Thermal Overload Alarm • Generator Receptacle Submersible Grinder
Jackel Basins Model Dimensions Capacity SF22A 18X24 22.5 Gallons SF30 18X30 30 Gallons SF24X36 24X36 72 Gallons SF30X36 30X36 110 Gallons Basin 18 x 24 SF-22A SEW14005 LId 18” Split SEW14020 18x30 Basin Complete SEW14028 Basement Sump 24” (No Lid) SEW14042 Basement Sump Lid 24” SEW14043 Bolt Kit (Cover) SEW14038 Hub Kit (4” Pipe Adpt) SEW14040 Rail packages available in 1-1/4”, 1-1/2”, 2”, 3”, and 4” discharge sizes.
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StormTech chambers are an excellent alternative for Retention Detention systems. The chambers are carefully engineered to meet the demands of subsurface storm water management applications. StormTech chambers provide optimal underground retention and detention solutions for storm water runoff. Contact your Milan representative to quote your stormwater / drainage project needs.
Tank Alert® XT alarm system (Weatherproof) The Tank Alert® XT indoor/outdoor alarm system monitors liquid level conditions in lift pump chambers, sump pump basins, holding tanks, sewage, agricultural, and other non-potable water applications.
SIMPLEX DUPLEX ECONOMY SIMPLEX MODEL 112 Control Panel MODEL 122 Control Panel MID MICHIGAN Dosing Panel Single phase, simplex motor contactor control. Single phase, duplex alternating pump control w/ override. Approved by regulators for Michigan market. The Model 112 control panel provides a reliable means of controlling one 120, 208, or 240 VAC single phase pump in pump chambers, sump pump basins, irrigation systems and lift stations.
Control Switches SJE-Rhombus narrow-angle control switches accurately monitor high (normally open) or low (normally closed) liquid level conditions in water and sewage applications. Each control switch is available in various cord lengths with various mounting options to meet your needs. Junior Super Single® Pump Switch The Junior Super Single® pump switch provides automatic control of smaller pumps in a non-turbulent location. UL Recognized; CSA Certied.
Simplex Float Arrangements Pump Differential Pump Or Alarm On/Off Pump Differential and Alarm Pump and Alarm On Alarm Off On/Off Pump, Alarm and Redundant Pump Diff., Alarm and Redundant Alarm Alarm Alarm On On/Off On Off Redundant Off Off Redundant Off Duplex Float Arrangements Pump and Alarm Pump Diff.
7ASTEWATER 4REATMENT FOR A #HANGING 7ORLD #OMMERCIAL FACILITIES ARE AMONG THE MOST CHALLENGING WASTEWATER PROJECTS OFTEN HAVING "/$ AND &/' LEVELS THAT ARE SIGNIlCANTLY HIGHER THAN STANDARD RESIDENTIAL SEWAGE (IGH3TRENGTH&!34¤ PROVIDES PROVEN ROBUST TREATMENT WHILE OFFERING THE SAME SIMPLE INSTALLATION AND MAINTENANCE AS A STANDARD &!34¤ SYSTEM s HIGH STRENGTH COMMERCIAL INSTALLATIONS s !VAILABLE FOR HIGH "/$ 433 AND .
Valves Check Valves 1” 1.25” 1.50” 2” 2” PVC Check Valve SxS KBI PVC Check Valve SxS KBI PVC Check Valve SxS KBI PVC Check Valve SxS KBI PVC Check Valve SxS AG SEW22240 SEW22250 SEW22260 SEW22270 SEW13023 2” PVC Single Union Ball SxS 2” PVC Combo Valve/Check/Union 1.50” PVC Swing Check Comp 2” PVC Swing Check Comp VAL02520 SEW02300 SEW13010 SEW13015 1.50” Bronze Swing Check Threaded VAL04220 2” Bronze Swing Check Threaded VAL04250 4” Back Flow Preventor PVC SEW13030 Ball Valves PVC 3/4” 1” 1.
PVC Pressure Fittings - Schedule 40 3/4” PVC08015 1” PVC08020 1.25” PVC08025 1.5” PVC08030 PVC01502 2” PVC08035 PVC01505 2.50” 1.25” PVC01515 3” PVC08045 1.5” PVC01520 4” PVC08050 6” PVC08070 Male Adapter 3/4” 1” 2” PVC01525 2.50” 436-025 3” PVC01535 4” 436-040 6” PVC01550 Female Adapter 3/4” PVC02005 1” PVC02010 1.25” PVC02015 1.50” PVC02020 2” PVC02025 2.50” 435-025 3” PVC02035 4” PVC02040 6” PVC02060 Bushing .75”x.50” 1”x.75” 1.25”x.75” 1.
PVC Pressure Fittings - Schedule 80 Cap - Slip Male Adapter 3/4” 836-007 3/4” 847-007 1” 836-010 1” 847-010 1.25” 836-012 1.25” 847-012 1.5” 847-015 2” 847-020 2.50” 847-025 1.5” PVD03124 2” PVD03132 2.50” 836-025 3” PVD03134 3” 847-030 4” 836-040 4” 847-040 6” 847-060 6” 836-060 Female Adapter 3/4” 835-007 1” 835-010 1.25” PVD03010 1.50” 835-015 2” 835-020 2.50” 835-025 3” 835-030 4” 835-040 6” 835-060 Cap - Thd 1”x.75” 837-101 837-131 1.25”x.
PVC PIPE DWV Sch40 Pipe PVC SDR 21 3/4” 1” 1.25” 1.50” 2” 2.5” 3” 4” PVC00675 PVC00680 PVC00720 PVC00735 PVC00738 PVC00741 PVC00743 PVC00750 PVC Primer and Cement 1 .
PVC Pipe Specications SCH-40 ASTM D-1785 SCH-80 ASTM D-1785 Size O.D. Min. Wall PSI 600 .5” .840 .147 850 Size O.D. Min. Wall PSI .5” .840 .109 .75” 1.050 .113 480 .75” 1.050 .154 690 1” 1.315 .133 450 1” 1.315 .179 630 1.25” 1.660 .140 370 1.25” 1.660 .191 520 1.5” 1.900 .145 330 1.5” 1.900 .200 470 2” 2.375 .154 280 2” 2.375 .218 400 2.5” 2.875 .203 300 2.5” 2.875 .276 420 3” 3.500 .216 260 3” 3.500 .300 370 4” 4.500 .
K-Rain Hydrotek Distributing Valve Pressure Indexing Zone Valve 4000 Series 6000 Series Pressure Loss - 4 Outlet Valve Flow (GPM) 10 20 30 40 PSI Loss 2.0 3.0 4.5 6.4 Pressure Loss - 4 Outlet Valve Flow (GPM) 20 40 60 80 100 PSI Loss 2.5 3.5 5.0 7.5 10.0 (Bare Valve Values) •Pressure Loss - 6 Outlet Valve Flow (GPM) 10 20 30 PSI Loss 2.0 4.5 7.5 •Pressure Rating: 25-75 PSI •4 Outlet Models have interchangeable Cams for 2-4 Zone Operation.
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OSI Distribution Valves Draineld Supplies V6403A Dist. Valve Assy. SEW22070 V6404A Dist. Valve Assy. SEW22080 V6605A Dist. Valve Assy. SEW22090 V6606A Dist. Valve Assy. SEW22100 Filter Fabric Filter Fab. 3’ x 300’ Lt. Wt. (900 sq ft.) SEW21752 Filter Fab. 3’ x 1500’ Lt. Wt. (4500 sq ft.) SEW21754 Filter Fab. 6’ x 300’ Lt. Wt. (1800 sq ft.) SEW21756 Filter Fab. 6’ x 1500’ Lt. Wt. (9000 sq ft.
Septic Tank Draw Down / Gallons per Inch (Inside Dimensions) Tank Width 5 5.25 5.5 5.75 6 6.25 6.5 6.75 7 7.25 7.5 7.75 8 Tank Length 7 7.5 4 4.5 5 5.5 6 6.5 12.46 13.08 13.71 14.33 14.95 15.58 16.20 16.82 17.45 18.07 18.69 19.32 19.94 14.02 14.72 15.42 16.12 16.82 17.52 18.23 18.93 19.63 20.33 21.03 21.73 22.43 15.58 16.36 17.13 18.91 18.69 19.47 20.25 21.03 21.81 22.59 23.37 24.14 24.92 17.13 18.99 18.85 19.71 20.56 21.42 22.28 23.13 23.99 24.85 25.70 26.56 27.42 18.69 19.63 20.56 21.50 22.
Recommended Basin Diameters GPM 18” 24” 30” 36” 48” Grommet dia. Pipe OD Splice box Hole saw size 20 x x x x x 25 x x x x x 1/2” 3/4” 0.84” 1.05” --- 1” 1-1/4” 30 x x x x x 1” 1.315” SB1 to SB4 1-9/16” 35 x x x x x 40 x x x x 45 x x x x 50 x x x x 60 x x x x 70 x x x 80 x x x 1-1/4” 1-1/2” 2” 3” 4” 6” 1.660” 1.9” 2.375” 3.5” 4.5” 6.
Milan Supply Company/Milan Engineered Systems Page 45 SCH 40 2.08 4.16 23.44 43.06 82.02 - SCH 80 4.02 8.03 45.23 83.07 - SCH 40 0.51 1.02 5.73 10.52 20.04 42.46 72.34 - SCH 80 0.86 1.72 9.67 17.76 33.84 71.70 - 3/4 in. 0.55 1.72 3.17 6.02 12.77 21.75 32.88 46.08 - SCH 40 0.88 2.75 5.04 9.61 20.36 34.68 52.43 73.48 - SCH 80 1 in. 0.14 0.44 0.81 1.55 3.28 5.59 8.45 11.85 15.76 20.18 25.10 30.51 - SCH 40 0.21 0.66 1.21 2.30 4.87 8.30 12.55 17.59 23.40 29.97 37.27 45.30 - SCH 80 1 1/4 in. 0.
AK Poly Septic Tanks 300 Gal Septic Tank SEP96000 500 Gal Poly Tank SEP96020 750 Gal Septic Tank SEP96030 1000 Gal Tank SEP96040 1000 Gal 2 Comp. SEP96050 1500 Gal 1 Comp. Tank SEP96060 1500 Gal 2 Comp. Tank SEP96070 21” Septic Tank Lid SEP96099 10” ID x 30” High Riser SEP97000 20” x 6” Twist On Riser SEP97100 20” x 12” Twist On Riser SEP97105 Model Height Width 500 GAL. 43” 62” 750 GAL. 53.25” 1000 GAL. 63” 1300 GAL. 1500 GAL.
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COMMON EFFLUENT FILTER QUESTIONS What is a septic tank? The septic tank is the rst component in a private wastewater system. It is a large, underground, watertight container that typically ranges in size from 1000 to 1500 gallon capacity. In addition to the overall physical size, tanks also vary according to the internal conguration based upon whether the tank is a single or double compartment container. The number of bedrooms in the house usually determines the actual size.
Efuent Filters Orenco Biotube Efuent Filters Model Prod # 4” Biotube Jr.
Only the Eljen GSF Pretreats Effluent with a Patented Two-Stage Bio-Matt TM THE SMALL NON-AGGREGATE LEACHFIELD SYSTEM… WITH BIG PERFORMANCE! • • • • • Greater Long Term Leaching Capacity Lower Site Impact No Stone Required...
Inltrator Chamber Systems EQ-36 22” Width 8.
RESIDENTIAL ONSITE WASTEWATER SYSTEM REVIEW EVALUATION CHECKLIST USE PRIOR TO REPAIRING ONSITE SYSTEM NAME PHONE SITE ADDRESS PHONE PHONE MAILING ADDRESS (If Different) DATE Sun Mon Tue Wed Thur Fri Sat 1. # OF PEOPLE LIVING IN HOME: ADULTS: 2. LAUNDRY HABITS: MAX. TOTAL M F CHILDREN (Total inc. Teenagers) F TEENAGERS: M LOADS / DAY LOADS/WEEK 3. BRAND OF LAUNDRY DETERGENTS USED: 4.
EVALUATION CHECKLIST USE PRIOR TO REPAIRING ONSITE SYSTEM CONTINUED - PAGE 2 20. TYPE OF SYSTEM: GRAVITY / GRAVITY WITH PUMP / PD / MOUND / SAND FILTER / ATU 21. CONTROL SYSTEM: OTHER DEMAND / TIMED 22. SCREENED OUTLET BAFFLE: YES / NO HAS SCREEN EVER PLUGGED: YES / NO 23. DATE OF LAST PUMPOUT: 24. SLUDGE LEVELS IN SEPTIC TANK: 1ST COMPARTMENT ACCUM. 2ND COMPARTMENT ACCUM. 25. SLUDGE LEVEL IN PUMP TANK: ACCUM. 26.
GEOFLOW SUBSURFACE DRIP DISPERSAL Your answer to - Small lots - Poor soils - Irregular shaped lots - Shallow soils - Steep slopes.
HANDBOOK PRODUCT INDEX PRODUCTS MANUFACTURER ACCESS DOORS PAGE 24 ALARMS SJE-RHOMBUS BASINS JACKEL 24 BULL RUN VALVES AMERICAN 42 CARBON FILTERS ORENCO 42 COMPRESSION COUPLING, PVC 30, 31,32 35 CONTROL PANELS ORENCO CONTROL PANELS SJE-RHOMBUS CORRUGATED POLY PIPE & FITTINGS BAUGHMAN TILE 13 CULVERT - POLY/STEEL BAUGHMAN TILE & STEEL 13 DISTRIBUTION BOXES POLYLOK 42 DISTRIBUTION VALVES K-RAIN, ORENCO DIVERTER VALVE DROP BOXES 20 30, 31,32 40,41,42 42 POLYLOK DWV, PIPE & F
Milan Supply Company is known for the company we keep . . . Pumps • • • • • Orenco Myers Goulds Sta-Rite Delta Wastewater Treatment • • • Electrical Controls • • • • Orenco Bio Microbics Eljen Orenco SJE Rhombus ITT Goulds Pentair . . .