Electric Drum Pump With Meter, Wastewater pumps. Grundfos submersible wastewater pumps are designed as sealed units combining a pump and integrated motor that can operate below the surface of wastewater. Electric Dry Sump Oil Pump, Submersible Wastewater Pumps for Indutry & Communities. Grundfos offers a complete range of submersible wastewater pumps for collecting and transporting wastewater, offering reliability and energy efficiency. These . Electric Fire Pump Testing, Wastewater pumping stations. Grundfos supplies wastewater pump stations with pumps, controls and monitoring for prefabricated pumping stations (PPS) and larger network and main pumping . Nic Grid, Image Carousel. Items 1 - 24 of 539 — Grundfos offer a range of high quality submersible sump wastewater pumps. These include the Unilift range which covers residential and . Rating: 9.6/10 · ‎Review by Trust Pilot Electric Glycol Pump, Grundfos - Sump & Sewage Pumps. Shop for Grundfos in Sump & Sewage Pumps at Ferguson. Ferguson is the #1 US plumbing supply company and a top distributor of HVAC parts, waterworks supplies .$79.99 delivery · ‎90-day returnsComplementary ResultsGrundfos Submersible Wastewater Pumps Details Stores Electric Heat Pump Fireplace, Grundfos Sewage Pumps. Products 1 - 24 of 48 — Pumps2You offers a wide range of sewage pumps manufactured by Grundfos. Browse our collection to choose a pump that fits your . Electric Heat Pump For Radiant Heat, Grundfos Submersible Sewage Pumps. Submersible Grundfos SEG sewage grinder pumps (0.9-4 kW) are designed for pumping wastewater, sludge-containing water, and sewage. Fitted with a patented . Electric Heat Pump Vs Oil Furnace, Grundfos Wastewater, Sewage, and Sump Pumps. Control Specialties backs our Grundfos sewage pumps system equipment and parts with fast service, after hours assistance and in house repair services. Browse . Electric Heat Pump Water Heater Tier 3, Grundfos Wastewater Pumps. Submersible Grundfos SEG sewage grinder pumps (0.9-4 kW) are designed for pumping wastewater, sludge-containing water, and sewage. Fitted with a patented . Electric Hot Tub Heater And Pump, Wastewater products - GRUNDFOS - PDF Catalogs. WASTEWATER PRODUCTS PUMPING STATIONS PUST: the all-in-one pre-fabricated pumping station The Grundfos PUST range is designed for the efficient and reliable .Grundfos 96847168 Submersible Wastewater Pumps$1,098.00Pump ProductsGrundfos 96847168 Submersible Wastewater Pumps$1,098.00Pump ProductsUNILIFT AP12 is a stainless-steel submersible pump designed for pumping non-aggressive water and grey wastewater with particles up to 12 mm. It can be used as a portable unit or stationary installation.Grundfos 98280869 Submersible Wastewater Pumps$2,051.28plumbersstock.com, 2+ storesGrundfos 98280869 Submersible Wastewater Pumps$2,051.28plumbersstock.com, 2+ storesSubmersible Grundfos SEG sewage grinder pumps 0.9-4 kW are designed for pumping wastewater, sludge-containing water, and sewage. Fitted with a patented grinder system designed to grind the media.Grundfos 96847172 Submersible Wastewater Pumps$2,487.00innovationsbyvp.com, 1+ storesGrundfos 96847172 Submersible Wastewater Pumps$2,487.00innovationsbyvp.com, 1+ storesUNILIFT AP12 is a stainless-steel submersible pump designed for pumping non-aggressive water and grey wastewater with particles up to 12 mm. It can be used as a portable unit or stationary installation.Grundfos 96847183 Submersible Wastewater Pumps$2,010.72MRO Supply, 1+ storesGrundfos 96847183 Submersible Wastewater Pumps$2,010.72MRO Supply, 1+ storesUNILIFT AP50 is a stainless-steel submersible pump designed for pumping non-aggressive water and grey wastewater with particles up to 50 mm. It can be used as a portable unit or stationary installation.Grundfos 013DC001, Model KP 350, KP Series, Submersible Wastewater Pumps, 115 Volts, 1 Phase, 1-1/4"NPT Vertical Discharge, 61.6 GPM Max, 31.17 ft Max$680.00Pump Products5.0(2)Grundfos 013DC001, Model KP 350, KP Series, Submersible Wastewater Pumps, 115 Volts, 1 Phase, 1-1/4"NPT Vertical Discharge, 61.6 GPM Max, 31.17 ft Max$680.00Pump Products5.0(2)Grundfos 98149498 SL1.20.A30.40.2.61J Wastewater Pump$2,861.67plumbersstock.comGrundfos 98149498 SL1.20.A30.40.2.61J Wastewater Pump$2,861.67plumbersstock.comGrundfos 99030303 Submersible Wastewater Pumps SLV.30.A40 .30.A.EX.4.61R.C$5,900.00innovationsbyvp.comGrundfos 99030303 Submersible Wastewater Pumps SLV.30.A40 .30.A.EX.4.61R.C$5,900.00innovationsbyvp.comNon-self-priming, single-stage, centrifugal pump designed for handling wastewater, process water and unscreened raw sewage. The pump is designed for intermittent and continous operations in submerged installation. The efficient SuperVortex impeller provides passage of long fibres and solids and is suitable for wastewater with a dry matter content of up to 5 %.Grundfos 98280892 Submersible Wastewater Pumps$4,280.00Pump ProductsGrundfos 98280892 Submersible Wastewater Pumps$4,280.00Pump ProductsSubmersible Grundfos SEG sewage grinder pumps 0.9-4 kW are designed for pumping wastewater, sludge-containing water, and sewage. Fitted with a patented grinder system designed to grind the media. Electric Kite Pump, Iowa Pump Works - Grundfos. Iowa Pump Works is an authorized Grundfos Distributor for Iowa and Nebraska. Municipal wastewater transport pumps are at the heart of many wastewater . Electric Medline Breast Pump, Grundfos SEG Sewage Grinder Pump. Grundfos SEG Sewage Grinder Pump is equipped with the unique SmartTrim system that enables you to easily restore the factory-set impeller clearance. Electric Motor Pumps, Grundfos 96971543 SLV.30.A40.150.A.2.61H Wastewater .. Order now and save on the Grundfos 96971543 SLV.30.A40.150.A.2.61H Wastewater Pump from PlumbersStock. Customers love Grundfos pumps and parts.$5,771.67 · ‎30-day returns Electric Motor With Pump, Grundfos 99030127 Submersible Wastewater Pumps, SL1 .. Non-self-priming, single-stage, centrifugal pump designed for handling wastewater, process water and unscreened raw sewage. The pump is designed for .$5,322.39 · ‎Out of stock Electric Positive Displacement Pump, Grundfos releases SL submersible wastewater pumps. Jul 13, 2015 — The SLV and SL1 pumps are designed for permanent submerged installation in demanding applications such as municipal wastewater, network pumping . Electric Pump For Sand Point Well, Grundfos Pumps Corporation. Grundfos' SL range is a new line of submersible wastewater pumps created to optimize performance and designed to handle unscreened sewage, effluent, . Electric Water Heater Vs Heat Pump Water Heater, Grundfos S, SE, SL Series Submersible Pumps. Grundfos S, SE, SL pumps form the backbone of many sewage systems. They are selected for their strength, their durability, and for innovative features such . Fire Electric Pump, Sewage Pumps - Grundfos. Grundfos Booster Expansion Tanks · Groundfos Groundwater Boosting Pumps · Grundfos Plumbing & Heating Circulator Pumps · Sump, Sewage, & Effluent · Effluent Pumps . Franklin Electric Shallow Well Jet Pump, Grundfos 98280858, Model SEG.A15, SEG Series .. Grundfos SEG Series: The SEG range of grinder pumps from Grundfos is specifically designed for pumping effluent and untreated sewage.$4,086.00 · ‎Free delivery over $399 · ‎30-day returns Franklin Electric Vacuum Pump, Heavy-duty submersible sewage pumps 1.65 - 29 kW. PDFOn Grundfos wastewater pumps smaller than. 12 kW, the bottom part of the channel impellers feature specially designed auxiliary vanes. These vanes are designed . Graco Electric Grease Pump, Heavy-duty submersible sewage pumps from 1.1 to 11 kW. PDFThe Grundfos SEV and SE1 pumps are designed for handling wastewater, process water and unscreened raw sewage in heavy-duty municipal, utility and industrial . Hayward Titanium 50k Btu Electric Heat Pump, Grundfos Water Supply & Waste Water. Submersible Pumps (S Range). ​. Applications: Raw sewage pumping. Large-volume drainage and irrigation. Heat Pump Vs Electric Resistance Heating, Images for grundfos wastewater pumps. 2:38Wastewater pumps must deliver reliable performance. At Grundfos, we put our years of experience and advanced development methods to good use .YouTube · Grundfos · Sep 25, 2017 Heavy Duty Electric Oil Pump, Grundfos AP 35B.50.06.1V, Dirty Water and Sewage Pump .. 50.06.1V, Dirty Water and Sewage Pump without Floatswitch 240v . Grundfos Unilift AP(B) range offers drainage, wastewater and sewage pumps for a wide range of .£404.00 · ‎14-day returns · ‎In stock Isle Paddle Board Electric Pump, Grundfos 96280974 Wastewater Sump Pump for sale online. Find many great new & used options and get the best deals for Grundfos 96280974 Wastewater Sump Pump at the best online prices at eBay! Low Volume Electric Oil Pump, Submersible Pumps Designed For Large Flows…. The submersible line (SL) of wastewater pumps from Grundfos Pumps are designed to handle raw, unscreened sewage, effluent, large volumes of surface water . Off Grid Homes For Sale California, Grundfos Water Utility. Yeomans Chicago Corporation is a quality manufacturer of pumps, motors, ejectors, comminutors and other products serving the municipal and industrial wastewater . Mb80 Electric Pump, Grundfos Pumps – Corporate Equipment Company, LLC. The SE range of wastewater pumps provide the highest total efficiency on the market. Innovative technologies from Grundfos bring together intelligence, . Motif Duo Double Electric Breast Pump With Hands-free Reviews, Tsurumi B - Non Clog Submersible Waste Water Pump. Grundfos S. Submersible Sewage and Wastewater Pumps. Type: Centrifugal Pumps. Mya Joy Double Electric Pump, Submersible wastewater pumps from Grundfos | 2015-08-11. Aug 11, 2015 — The Grundos line of SL submersible wastewater pump is designed to handle raw unscreened sewage, effluent, large volumes of surface water and . Pros And Cons Of Electric Heat Pump, Grundfos SEG.40.12.2.50B 1,2kW 400V sewage grinder pump. SEG grinder pumps 0.9-4 kW are the perfect choice for pumping untreated wastewater and toilet waste from single houses, small communities and less populated .Maximum head: 20,70Maximum flow: 300€1,366.08 · ‎Out of stock Ptac Heat Pump Vs Electric Heat, Grundfos helps you understand efficiencies for wastewater .. Mar 18, 2016 — Below you will find how Grundfos talks efficiencies on wastewater pumps. Unfortunately there is as yet no minimum efficiency standard for . Stainless Steel Electric Drum Pump, Grundfos Submersible Drainage/Wastewater Pumps. Grundfos submersible wastewater pumps are designed as sealed units combining a pump and integrated motor that can operate below the surface of wastewater.Grundfos 98149499 SL1.20.A30.55.2.61J Wastewater Pump$3,017.50plumbersstock.comGrundfos 98149499 SL1.20.A30.55.2.61J Wastewater Pump$3,017.50plumbersstock.comGrundfos 96847181 Unilift Ap50 Effluent Drain Pump$1,349.01supplyhouse.com, 1+ storesGrundfos 96847181 Unilift Ap50 Effluent Drain Pump$1,349.01supplyhouse.com, 1+ storesGrundfos 96010670 Unilift AP35 Submersible Effluent Pump$951.51SupplyHouse.comGrundfos 96010670 Unilift AP35 Submersible Effluent Pump$951.51SupplyHouse.comGrundfos 96781220 Submersible Wastewater Pumps$350.70eBay - plccenterGrundfos 96781220 Submersible Wastewater Pumps$350.70eBay - plccenterUNILIFT CC is a single-stage submersible pump designed for pumping clean, non-aggressive water and grey water down to 3 mm water level. It has dual outlet, allowing easy adaptation to existing pipes.Grundfos Model CRI CRI Series Vertical Multistage Centrifugal Pumps$2,355.44MRO Supply, 5+ storesGrundfos Model CRI CRI Series Vertical Multistage Centrifugal Pumps$2,355.44MRO Supply, 5+ storesThis Complete Unit Multistage Centrifugal Pump is a vertical multistage centrifugal pump. The in-line design enables the pump to be installed in a horizontal one-pipe system where the suction and discharge ports are in the same horizontal plane and have the same pipe dimensions. This design provides a more compact pump design and pipework.Grundfos 98682355, Model SEG.A15, SEG Series, Submersible Wastewater Pumps, 1-1/5 HP, 200-230 Volts, 3 Phase, 1-1/2" NPT Vertical Discharge, 88.1 GPM $2,554.00Pump ProductsGrundfos 98682355, Model SEG.A15, SEG Series, Submersible Wastewater Pumps, 1-1/5 HP, 200-230 Volts, 3 Phase, 1-1/2" NPT Vertical Discharge, 88.1 GPM $2,554.00Pump ProductsGrundfos 96010692, AP50.50 Model, AP50 Series, Submersible Wastewater Drainage Pump, 220-230 Volts, 1 Phase, 2" NPT Power Outlet, 123 GPM Max, 41.01 $1,287.03Pump ProductsGrundfos 96010692, AP50.50 Model, AP50 Series, Submersible Wastewater Drainage Pump, 220-230 Volts, 1 Phase, 2" NPT Power Outlet, 123 GPM Max, 41.01 $1,287.03Pump ProductsGrundfos 96847166 Unilift Ap12 Effluent Drain Pump$1,014.00MRO Supply, 2+ storesGrundfos 96847166 Unilift Ap12 Effluent Drain Pump$1,014.00MRO Supply, 2+ storesUNILIFT AP12 is a stainless-steel submersible pump designed for pumping non-aggressive water and grey wastewater with particles up to 12 mm. It can be used as a portable unit or stationary installation. Nike Zoomx Invincible Women, Grundfos SE / SL wastewater pumps - Roodhart Group. Product features. The SE and SL ranges of wastewater pumps provide the highest total efficiency on the market. Innovative technologies from Grundfos bring . 1 2 Hp Vacuum Pump, Grundfos wastewater pumps | 2016-11-24. Nov 24, 2016 — Grundfos extends its SL and SE range of wastewater pumps to include medium, high and super-high hydraulic offerings from 12 to 42 HP that . 10 Hp Vacuum Pump, Grundfos SE V pumps. Grundfos SE V water pumps can be used submerged or dry-installed. Suitable for wastewater, process water or unscreened raw sewage. Find out more! 100 Cfm Vacuum Pump, Grundfos 99030128 SL1.30.A30.75.EX.4.61R.C .. The 99030128 is produced by Grundfos and is described as a Grundfos 99030128 SL1.30.A30.75.EX.4.61R.C Wastewater Pump.$11,462.22 · ‎Free delivery · ‎90-day returns 120v Vacuum Pump, Grundfos. Grundfos is the largest pump manufacturer in the world, based in Denmark, with more than . In the water-supply and wastewater sector, Grundfos offers pumps for . 2 Stage Rotary Vane Vacuum Pump, SE75 Automatic Sewage Pump - 3/4 HP, 10ft power cord .. Grundfos 96001511 - SE75 Automatic Sewage Pump - 3/4 HP, 10ft power cord, 230 volt- 3/4 HP 10 foot power cord 2" Solids Handling With Float Switch 230 Volts .Free delivery over $99 · ‎90-day returns 20 Cfm Vacuum Pump, Grundfos - Detroit Pump & Mfg. Co. Centrifugal Vertical .. Grundfos is a global leader in advanced pump solutions and trendsetter in water technology. They take pride in moving water to where it should be, . 2007 Mini Cooper Vacuum Pump, grundfos pumps, grundfos catalogues, grundfos supplier. In wastewater transport systems and drainage systems, a prefabricated pumping station is a cost-effective, flexible, and reliable alternative to traditional . 2014 Silverado Vacuum Pump Replacement, Grundfos. The types of pumps manufactured include circulating pumps, end suction pumps, immersible pumps, sewage pumps and booster pumps. Reliable Water Pumps. Choosing a . 2017 Chevy Silverado Brake Vacuum Pump, Grundfos SL1 S-tube sewage and waste water pumps .. The Grundfos SL1 pumps with S-tube impeller specifically designed for pumping sewage and wastewater in a wide range of municipal, private and industrial .£3,937.27 · ‎14-day returns Off Grid Land For Sale In South Carolina, Grundfos Unveils SL Submersible Pump Range To Handle .. Oct 18, 2010 — Designed for submerged use in network pumping stations, wastewater treatment plants, public buildings, housing projects and industry, SL pumps . 3 Stage Vacuum Pump, Grundfos Sewage Pumps - The Hill Company. Sep 5, 2018 — In addition, guide rail installation allows the pumps to be serviced without the need for entering the pit. Grundfos wastewater solutions build . 30 Cfm Vacuum Pump, Grundfos Wastewater Pump Service Runs on Hydraulic .. The operation has to be efficient in all four seasons and in all weather conditions when a wastewater pumping station requires maintenance. Grundfos nation-wide . 5 Hp Vacuum Pump, GRUNDFOS s PUMP RANGEs 34-78 sewage and raw .. PDFThe S range from Grundfos consists of submersible sewage pumps . as large quantities of raw water in wastewater/water infrastructure. 5hp Vacuum Pump, Grundfos Pumps | Supply | Maintenance | Repair. Grundfos Pump Supply, Installation, Maintenance & Repair . service and repair many types of pumps including Submersible Pumps, Sewage Pumps, Air Pumps, . 6 Cfm Eliminator Vacuum Pump, Grundfos® Pumps Distributor. Hayes Pump distributes Grundfos' broad line of products, including Booster Pumps & Systems, Controls and Monitoring, Dosing Pumps, End Suction Pumps, . A2l Vacuum Pump, Grundfos SEG Grinding Pump For Sewage Water Application. Submersible Grundfos SEG sewage grinder pumps are designed for pumping wastewater, sludge-containing water, and sewage. Fitted with a patented grinder .₹50,000.00 Acdelco 12669488 Gm Original Equipment Vacuum Pump, News from Grundfos Biobooster - The Online Pump Magazine. News from Grundfos Biobooster. 28.10.2008. Grundfos .Wed, Nov 8BLUE PLANET Berlin Water . Aerospace Vacuum Pump Kit, Grundfos SL, SE wastewater pumps | 2016-12-21. Dec 21, 2016 — Grundfos is extending its SL and SE range of wastewater pumps to include medium, high, and super-high hydraulic offerings from 12 to 42 hp. Air Driven Vacuum Pump, Grundfos Wastewater Multi Lift Pump. Qpoint Engineering Solutions Private Limited - Offering Grundfos Wastewater Multi Lift Pump at Rs 20000 in Pune, Maharashtra. Get Wastewater Pumps at lowest .₹20,000.00 Off Grid Land For Sale Washington State, Global Industrial Pumps Market to Reach US$ 107.6 Billion .. 13 hours ago — Increasing demand for industrial water pumps, chemical pumps in wastewater treatment & chemicals is likely to drive the market demand. Aircraft Vacuum Pump, Handbook of Pumps and Pumping: Pumping Manual International. Brian Nesbitt · 2006 · ‎Technology & EngineeringITT Industrial & BioPharm Group Goulds Pumps, ITT Water Technology Grundfos (Singapore) Pte Ltd Grundfos GmbH Grundfos Management AJS Grundfos Pompe Italia .600 gpm water pump. Piston and solar pumps Jet pumps Submersible pumps Waste water pumps Atlantis . As a renowned pump manufacturer, Grundfos delivers efficient, reliable, .Hydraulic Dosing Pumps Market Navigating the Regulatory .. 1 day ago — Hydraulic Dosing Pumps Market Navigating the Regulatory Landscape: Opportunities and Challenges in 2023-2029 | Grundfos Holding A/S, .Global Industrial Pumps Market to Reach US$ 107.6 Billion. 13 hours ago — Increasing demand for industrial water pumps, chemical pumps in wastewater treatment & chemicals is likely to drive the market demand.The Grundfos SP submersible is a highly durable pump made .. 0:40impressive durability of the pump. As authorized Grundfos distributor in Nigeria, We will guide you through your pump procurement or pump installation process.Facebook · The Pump House Limited · Mar 30, 2021Flygt pump cad drawings. 1 day ago — Sewage Sump Pump Section Details CAD Template DWG ; 3D Model acad . dn100 flygt 100 96105782 grundfos product center cookie policy, .Grundfos pump Unilift KP for lifting and sanitation. UNILIFT KP are submersible pumps designed for the pumping of clear, non-aggressive water and slightly loaded (gray) wastewater.€421.12 · ‎14-day returnsHydroTech Pump. 10 hours ago — Grundfos Pumps. . Sludge pumpsSludge pumps are designed for pumping waste water, faeces and raw sludge, gravel.WEFTEC. WEFTEC, the Water Environment Federation's Technical Exhibition and Conference, is largest conference of its kind in North America and offers water quality .Water and Energy Efficiency: Key Solutions for Achieving .. 6 days ago — Grundfos' Energy Check Advanced uses actual pump data in terms of flow, head, and motor power consumption along with pump age and operating .Municipal Wastewater Pump Market Research Report. 15 hours ago — Major players covered, Grundfos Group, KSB Group, Xylem, Ebara, Tsurumi, . Global Municipal Wastewater Pump market size and forecasts by .Global Industrial Pumps Market to Reach US$ 107.6 Billion .. 14 hours ago — The increasing focus on efficient water and wastewater management drives . EBARA CORPORATION, Flowserve Corporation, Grundfos Holding A/S, .Grundfos SOLOLIFT2 WC-3 Waste Water Transfer Pump. Grundfos SOLOLIFT2 WC-3 Waste Water Transfer Pump Kuala Lumpur (KL), Malaysia, Selangor, Cheras Supplier, Suppliers, Supply, Supplies, KOKENT ENTERPRISE .Middle East & North Africa Centrifugal Water Pumps Market .. 1 day ago — Ebara; Flowserve Corporation; Grundfos; IDEX; ITT Inc. Kirloskar Brothers Limited (KBL); KSB Group; SPX Flow; Sulzer Limited; Torishima Pump .What is a Reverse Osmosis System and How Does It Work?. 8 days ago — Permeate pumps reduce the wastewater from an RO system by 75 to 80%. . a large booster pump, like a Grundfos or Davey, provides adequate .Custom Skids & Pump Packages. Custom Skids & Pump Packages. . food-grade hygienic, general industry, mining, oil and phosphate, pulp and paper, water/wastewater, and more.Global Industrial Pumps Market to Reach US$ 107.6 Billion .. 13 hours ago — EBARA CORPORATION, Flowserve Corporation, Grundfos Holding A/S, Ingersoll Rand, KSB SE & Co. KGaA, Pentair, SPX FLOW, Inc, Sulzer Ltd, Titan .Buy Pumps Online At Best Price. Shop for top-notch Pumps products at an affordable price from Industrybuying. . Powerhouse 1 HP Sewage Submersible Pump Stainless Steel Body QDP-SS-12-20.Flowserve, GE, KSB, Weir, Alfa Laval, Eaton, Gates, Grundfos .. 17 hours ago — Pump services, Valves services. Pumps And Valves Services Market Applications: Oil and gas industry, Water and wastewater industry, Chemical and .Welcome to USABlueBook.com | USABlueBook.com. Grundfos Pumps & Parts · Hose Pumps & Accessories · Injection Quills & Nozzles . Engine Driven Pumps - Effluent . Wastewater & Water Supply Books & CDs.Franklin Electric: Home. Submersible Well Pumps & Vertical Turbines · Submersible_Well_Pump_Menu_Image_FE.psd · Submersible Motors & Control Boxes.Packaged Wastewater Treatment Market 2023-2032, Key .. 6 days ago — Wastewater Pump Global Market 2019 Industrial Wastewater, Flood Control, Agricul … Press Release – 23 Jan 2019 Research and Development News -- .Water Pumps Market Size & Market Share Data, Latest Trend. Jul 17, 2023 — Press release - Introspective Market Research - Water Pumps Market Size . WILO SE (Germany), Grundfos (Denmark), Husqvarna AB (Sweden), .Digital Pump Controllers Market Is Expected To Reach US .. Oct 7, 2019 — The automatic operation of digital pump controllers therefore reduce the amount of wastewater. This factor is expected to drive the growth of .What Will Axial Flow Pump Market Look Like In The Future?. 2 days ago — They are also used in wastewater treatment plants, where they can move large . Flowserve Corporation, Grundfos Holdings A/S, Handol Pumps .