-
Supplier: Ashcroft Inc.
Description: The Ashcroft® XHOV-KIT high pressure hydraulic pump is a hand-pump device for generating system pressure. Used for calibrating measurement devices, the simple operation and durable construction enable its field application. Lightweight and portable Operates
- Discharge Size: 0.1250 to 0.2500 inch
- Maximum Discharge Pressure: 0.0 to 5000 psi
- Pump Type: Hydraulic Pumps
-
Supplier: SC Hydraulic Engineering Corporation
Description: PORTABLE ECONOMICAL LIGHTWEIGHT REQUIRES NO LUBRICATION EASY TO INSTALL & OPERATE IDEAL FOR OEM APPLICATIONS SC air driven compact liquid pumps operate on the principal of differential areas. An air piston drives a smaller
- Discharge Size: 0.2500 inch
- Maximum Discharge Pressure: 4375 psi
- Maximum Discharge Flow: 0.5844 GPM
- Type of Pump: Booster Pumps, Hand / Foot Pumps, Piston / Plunger Pumps, Positive Displacement Pumps, Split Case Pumps
-
Supplier: SC Hydraulic Engineering Corporation
Description: PORTABLE ECONOMICAL LIGHTWEIGHT REQUIRES NO LUBRICATION EASY TO INSTALL & OPERATE IDEAL FOR OEM APPLICATIONS SC air driven compact liquid pumps operate on the principal of differential areas. An air piston drives a smaller
- Discharge Size: 0.5625 inch
- Maximum Discharge Pressure: 19500 to 24375 psi
- Type of Pump: Booster Pumps, Hand / Foot Pumps, Piston / Plunger Pumps, Positive Displacement Pumps, Split Case Pumps
-
-
Supplier: U.S. Plastic Corporation
Description: Diaphragm pumps handle water and water-like liquids and sludge. Self priming with 12 ft. suction lift and 12 ft. head. 10 gpm model (9 strokes/gal.); 12 gpm model (7 strokes/gal.); 25 gpm model (3 strokes/gal). Reinforced Buna-N diaphragm and flapper valve. Tough anodized
- Type Of Pump: Hand / Foot Pumps
-
Supplier: U.S. Plastic Corporation
Description: Diaphragm pumps handle water and water-like liquids and sludge. Self priming with 12 ft. suction lift and 12 ft. head. 10 gpm model (9 strokes/gal.); 12 gpm model (7 strokes/gal.); 25 gpm model (3 strokes/gal). Reinforced Buna-N diaphragm and flapper valve. Tough anodized
- Type Of Pump: Hand / Foot Pumps
-
Supplier: U.S. Plastic Corporation
Description: Diaphragm pumps handle water and water-like liquids and sludge. Self priming with 12 ft. suction lift and 12 ft. head. 10 gpm model (9 strokes/gal.); 12 gpm model (7 strokes/gal.); 25 gpm model (3 strokes/gal). Reinforced Buna-N diaphragm and flapper valve. Tough anodized
- Type Of Pump: Hand / Foot Pumps
-
Supplier: U.S. Plastic Corporation
Description: Diaphragm pumps handle water and water-like liquids and sludge. Self priming with 12 ft. suction lift and 12 ft. head. 10 gpm model (9 strokes/gal.); 12 gpm model (7 strokes/gal.); 25 gpm model (3 strokes/gal). Reinforced Buna-N diaphragm and flapper valve. Tough anodized
- Type Of Pump: Hand / Foot Pumps
-
Supplier: Goulds Water Technology, a xylem brand
Description: air enters the system. Pumping resumes once the water level rises above the foot valve. Basic Pump Unit: Includes pump and motor, pressure switch with tubing and fittings. Water system tank required on all systems.
- Type of Pump: Centrifugal Pumps, Jet Pumps, Well Pumps
-
Supplier: Goulds Water Technology, a xylem brand
Description: , then baked on. Excellent Air Handling Ability: After initial priming the pump has the ability to reprime itself even when air gets into the system. Pumping resumes once the water level rises above the foot valve.
- Type of Pump: Centrifugal Pumps, Jet Pumps, Well Pumps
-
Supplier: EBARA Pumps Americas Corporation
Description: conventional cast iron, making EBARA centrifugal pumps competitively priced and an economical choice. The model CDU is suitable for many residential and commercial general water applications that require corrosion resistance including water supply, pressure boosting, small
- Discharge Size: 1 inch
- Horsepower: 0.7500 to 2 HP
- Maximum Discharge Pressure: 145 to 438 psi
- Maximum Discharge Flow: 1.5 to 18.5 GPM
-
Supplier: EBARA Pumps Americas Corporation
Description: support under casing – ensures self-venting and reduces misalignment from pipe loads High operating efficiency – lowers operating costs High quality mechanical shaft seals and o-rings – available for standard pumping requirements, or optional high temperature and chemical duty
- Discharge Size: 2 inch
- Horsepower: 1.5 to 4 HP
- Maximum Discharge Pressure: 80.73 to 150 psi
- Maximum Discharge Flow: Up to 250 GPM
-
Supplier: EBARA Pumps Americas Corporation
Description: compared to conventional cast iron, making EBARA centrifugal pumps competitively priced and an economical advantageous choice. Models 2CDXU, 2CDU are suitable for commercial and industrial pressure boosting and general water applications including water supply, water
- Discharge Size: 1 inch
- Horsepower: 2 to 5 HP
- Maximum Discharge Pressure: 226 to 565 psi
- Maximum Discharge Flow: 5.5 to 66 GPM
-
Supplier: Clark Solutions
Description: . The pump works with three tube sizes to optimize the dispense flow rate. Boxer 9700 is equipped with a remote switch socket. A foot switch enables work hands free or the pump operation can be controlled from a computer using a USB Relay Controller. For added safety and peace
- Discharge Size: 0.1181 inch
- Maximum Discharge Flow: 0.0476 GPM
- Power Source: AC Powered, DC Powered
- Type Of Pump: Positive Displacement Pumps, Water Supply Pumps, Peristaltic Pumps
-
Supplier: Macnaught USA, Inc.
Description: of 25 GPM and well suited for Diesel, Kerosene, ATF, Coolant and Oils up to 85W. This pump is a self-priming unit and dispenses approximately 33 oz. per rotation. Macnaught Rotary Hand Operated Oil Pump Specifications Part # PN# FPM-001 Pump Type: Rotary Vane Twin
- Maximum Discharge Flow: 25 GPM
- Media Temperature: 140 F
-
Supplier: Certex UK
Description: The Hand Pump PA H 2 series from Holmatro, single acting, 2 stage, hand pumps. Unique specifications: Ergonomic design Lightweight; easy to carry and operate Low operating force required; minimal user effort Soft-grip handles; more
- Maximum Discharge Pressure: 10153 psi
- Type Of Pump: Hand / Foot Pumps
-
Supplier: Certex UK
Description: The Hand Pump PA H 2 series from Holmatro, single acting, 2 stage, hand pumps. Unique specifications: Ergonomic design Lightweight; easy to carry and operate Low operating force required; minimal user effort Soft-grip handles; more
- Maximum Discharge Pressure: 10153 psi
- Type Of Pump: Hand / Foot Pumps
-
Supplier: Certex UK
Description: The Hand Pump PA H 2 series from Holmatro, single acting, 2 stage, hand pumps. Unique specifications: Ergonomic design Lightweight; easy to carry and operate Low operating force required; minimal user effort Soft-grip handles; more
- Maximum Discharge Pressure: 10153 psi
- Type Of Pump: Hand / Foot Pumps
-
Supplier: Certex UK
Description: The Hand Pump PA H 2 series from Holmatro, single acting, 2 stage, hand pumps. Unique specifications: Ergonomic design Lightweight; easy to carry and operate Low operating force required; minimal user effort Soft-grip handles; more
- Maximum Discharge Pressure: 10153 psi
- Type Of Pump: Hand / Foot Pumps
-
Supplier: Cole-Parmer
Description: pipe loads • High operating efficiency lowers operating costs Applications: |• Plant services|• Water supply systems|• Washing plants|• Cooling water|• Car wash|• Scrubbers|• Ultrapure water systems|• Jockey pump
- Horsepower: 15 HP
- Maximum Discharge Pressure: 230 psi
- Maximum Discharge Flow: 380 GPM
- Power Source: AC Powered
-
Supplier: Cole-Parmer
Description: pipe loads • High operating efficiency lowers operating costs Applications: |• Plant services|• Water supply systems|• Washing plants|• Cooling water|• Car wash|• Scrubbers|• Ultrapure water systems|• Jockey pump
- Horsepower: 1.5 HP
- Maximum Discharge Pressure: 125 psi
- Maximum Discharge Flow: 80 GPM
- Power Source: AC Powered
-
Supplier: Cole-Parmer
Description: pipe loads • High operating efficiency lowers operating costs Applications: |• Plant services|• Water supply systems|• Washing plants|• Cooling water|• Car wash|• Scrubbers|• Ultrapure water systems|• Jockey pump
- Horsepower: 1.5 HP
- Maximum Discharge Pressure: 125 psi
- Maximum Discharge Flow: 80 GPM
- Power Source: AC Powered
-
Supplier: Cole-Parmer
Description: pipe loads • High operating efficiency lowers operating costs Applications: |• Plant services|• Water supply systems|• Washing plants|• Cooling water|• Car wash|• Scrubbers|• Ultrapure water systems|• Jockey pump
- Horsepower: 5 HP
- Maximum Discharge Pressure: 230 psi
- Maximum Discharge Flow: 140 GPM
- Power Source: AC Powered
-
Supplier: EBARA Pumps Americas Corporation
Description: lighter weight compared to conventional cast iron, making EBARA centrifugal pumps competitively priced and an economical advantageous choice. The model 3U, 3UB series are suitable for almost any commercial and industrial general water applications that require corrosion resistance
- Discharge Size: 1.25 to 2.5 inch
- Horsepower: 3 to 30 HP
- Maximum Discharge Pressure: 76.12 to 577 psi
- Maximum Discharge Flow: 13 to 650 GPM
-
Supplier: Aqua Solutions, Inc.
Description: portion of this system reduces operating costs by economically removing ~97% of the contaminants from the incoming tap water. The RO water is stored in an included 200-Liter pressurized tank that prevents the risk of airborne contamination and eliminates the need for additional
- Assembly / Element Type: Other
- Filter Medium Material: Ion Exchange Resin
- Maximum Liquid Flow: 2.11 to 3.17 GPM
- Maximum Pressure: 100 psi
-
Supplier: Aqua Solutions, Inc.
Description: of this system reduces operating costs by economically removing ~97% of the contaminants from the incoming tap water. The RO water is stored in an included 200-Liter pressurized tank that prevents the risk of airborne contamination and eliminates the need for additional feed
- Assembly / Element Type: Other
- Filter Medium Material: Ion Exchange Resin
- Maximum Liquid Flow: 2.11 to 3.17 GPM
- Maximum Pressure: 100 psi
-
Supplier: Aqua Solutions, Inc.
Description: this system reduces operating costs by economically removing ~95% of the contaminants from the incoming tap water. The RO water is stored in an included 42-Liter pressurized tank that prevents the risk of airborne contamination and eliminates the need for additional feed
- Assembly / Element Type: Other
- Filter Medium Material: Ion Exchange Resin
- Maximum Pressure: 10 psi
- Trigger: System
-
Supplier: Aqua Solutions, Inc.
Description: reduces operating costs by economically removing ~95% of the contaminants from the incoming tap water. The RO water is stored in an included 42-Liter pressurized tank that prevents the risk of airborne contamination and eliminates the need for additional feed pumps and
- Assembly / Element Type: Other
- Filter Medium Material: Ion Exchange Resin
- Maximum Liquid Flow: 1.32 GPM
- Maximum Pressure: 100 psi
-
Supplier: CECOR
Description: with a 2-1/2” drain port in the door. The door is flush to the bottom of the tank for easy cleaning. Carrier for hose is mounted on back. Air operated venturi creates vacuum in the tank with a suction of 360” water (26” Hg) and pumping rates to 70 gpm. Automatic overfill
-
Supplier: XeteX, Inc.
Description: This unit and another like it are dedicated outdoor air energy recovery ventilation units, providing all of the air handling and conditioning needs of the 105,000 square foot Maple Grove, MN Government Center. Heating and cooling are provided by an array of heat pumps sourced by two
- Application: Residential
- System Type: Heat Recovery Ventilator (ERV)
-
Supplier: UL Standards & Engagement
Description: 1.1 These requirements apply to electric motor-operated water pumps of the nonsubmersible type, pump-filter combinations, and chlorinators for use with swimming pools, hot tubs, and spas, to be used in accordance with the National Electrical Code, NFPA 70. The pump
-
Supplier: Caterpillar Oil & Gas
Description: Jacket water pump — belt-driven, centrifugal Water pump — inlet RH front vertical inlet (pointing down) — 63 mm (2.48 in) Exhaust System Single, right-side, center-mounted turbo with water-cooled turbine housing Exhaust
- Application: Industrial
- Displacement: 7.24 liters
- Engine Type: Internal Combustion
- Features: EPA Certified, EU Certified, EPA Tier 2/EU Stage II, EPA Tier 3/EU Stage IIIA
-
Supplier: Pressure Washers Direct
Description: •13" pneumatic tires for easy mobility over rough terrain Dual Wand With Side Handle And Detergent Tip •Quick change tips in 0°, 15°, 25°, 40° •Side handle adds comfort and steadies spray •Includes 50 feet of high pressure, hot water hose American Pride •Assembled in the USA Must Be
- Driver / Power Source: Electric Motor
- Features: Hot Water / Steam
- Machine Mounting: Cart / Hand Truck
- Water Jet Pressure: 2000 psi
-
Supplier: Pressure Washers Direct
Description: •13" pneumatic tires for easy mobility over rough terrain Dual Wand With Side Handle And Detergent Tip •Quick change tips in 0°, 15°, 25°, 40° •Side handle adds comfort and steadies spray •Includes 50 feet of high pressure, hot water hose American Pride •Assembled in the USA Must Be
- Driver / Power Source: Electric Motor
- Features: Hot Water / Steam
- Machine Mounting: Cart / Hand Truck
- Water Jet Pressure: 3000 psi
-
Supplier: Fortrans Inc.
Description: The Model 5000M pH monitor and data logger system includes a 1 horsepower, 115 volt submersible pump with temperature overload protection, a 50-foot power cord, and a 50-foot float switch to prevent run dry. With a 5-foot head, this pump will provide a 70
- Control Signal Output: Switch / Relay Output
- Control Technique: Limit / Set Point Control
- Controller Inputs: Other
- Form Factor: Panel / Chassis Mount
-
Supplier: Serfilco, Ltd.
Description: polyethylene shell, in sizes from 0.15 to 15 cubic feet of resin. Built-in strainers help prevent resin migration. Seal-less magnetic coupled pumps provide leak-proof operation with minimal maintenance. All systems are mounted on a base, ready to connect and operate. Benefits For
-
Supplier: RS Components, Ltd.
Description: with clean water and pumped up to 7 bar G with a conventional foot pump. Eye and facewash diffuser attached by flexible hose. Ideal for workshops and schools, as well as any remote locations. Swift and thorough action in event of an emergency. Pressurising using garage
- Features: Portable
- Type: Eye Wash, Face Wash
-
Supplier: Waterman Industries, Inc.
Description: -point wedge action Stainless steel assembly hardware is standard Uses Water control application where a rugged but economical circular opening gate is required, such as small reservoirs, distrubution boxes, ponding areas and pumping stations where fluid and
- Valve Type: Gate / Knife Valves
-
Supplier: Waterman Industries, Inc.
Description: . Frame, cover and arch are high strength cast iron. Used in water control applications where a rugged but economical circular opening gate is required, such as small reservoirs, distribution boxes, pounding areas and pumping stations where fluid and operating conditions are
- Valve Type: Gate / Knife Valves
-
Supplier: CECOR
Description: with a 2-1/2” drain port in the door. The door is flush to the bottom of the tank for easy cleaning. Carrier for hose is mounted on back. Air operated venturi creates vacuum in the tank with a suction of 360” water (26” Hg) and pumping rates to 70 gpm. Automatic overfill
- Application / Industry Use: Heat Transfer Fluids, Other
- Clarifiers: Suction Clarifier
-
Supplier: Mi-T-M Corporation
Description: control · Automatic ignition · Water resistant control box · Automatic fuel shut-off · High thermal efficiency · Control panel with thermostat plug, reset push button and safety air pressure switch · High pressure fuel pump · Vacuum sensor helps prevent
- Fuel / Energy Source: Diesel / Fuel Oil / Gasoline / Kerosene
- Heating Capacity: 26.97 to 87.93 kW
- Maximum Air Flow: 557 to 2650 SCFM
-
Supplier: Caterpillar Oil & Gas
Description: allow Cat C7 ACERT hazardous location engines to deliver excellent performance with low operating costs and emissions. Hazardous location engines are certified to operate in potentially explosive environments. Applications powered by C7 ACERT engines include pump skids,
- Application: Industrial
- Displacement: 7.24 liters
- Engine Type: Internal Combustion
- Features: EPA Certified, EU Certified, EPA Tier 2/EU Stage II, EPA Tier 3/EU Stage IIIA
-
Supplier: Caterpillar Oil & Gas
Description: allow Cat C9 ACERT hazardous location engines to deliver excellent performance with low operating costs and emissions. Hazardous location engines are certified to operate in potentially explosive environments. Applications powered by C9 ACERT engines include workover rigs, pump
- Application: Industrial
- Displacement: 8.82 liters
- Engine Type: Internal Combustion
- Features: EPA Certified, EU Certified, EPA Tier 2/EU Stage II, EPA Tier 3/EU Stage IIIA
-
Supplier: Hammond Manufacturing Company Inc.
Description: Application Designed to insulate and protect controls and components in both indoor and outdoor conditions Ideal for industrial pump controls, waste water, irrigation control along with solar/wind and chemical plants Standards UL 508A Type 1, 2, 3
- Depth: 6 inch
- Length / Height: 10 inch
- Type: Electronic and Instrument Enclosures, Terminal and Junction Boxes
- Width/Diameter: 8 inch
-
Supplier: Caterpillar Oil & Gas
Description: allow Cat C32 ACERT hazardous location engines to deliver excellent performance with low operating costs and emissions. Hazardous location engines are certified to operate in potentially explosive environments. Applications powered by C32 ACERT engines include well stimulation
- Application: Industrial
- Displacement: 32.12 liters
- Engine Type: Internal Combustion
- Features: EPA Certified, EPA Tier 2/EU Stage II
-
Supplier: Tripp Lite by Eaton
Description: Features 12,000 BTU of Cooling Power Protects Your Equipment against Hazardous High HeatThis SmartRack® server rack cooling unit pumps 12,000 BTU (3.5kW) of cooling into your IT environment to help prevent shutdowns, malfunctions and other failures caused by overheating or
- Cooling Capacity: 11941 BTU/hr
- Frequency: 60 Hz
- Operating Voltage: 115 VAC
- Type: Enclosure, Portable
-
Supplier: Hammond Manufacturing Company Inc.
Description: Application Designed to insulate and protect controls and components in both indoor and outdoor conditions Ideal for industrial pump controls, waste water, and irrigation control along with solar/wind and chemical plants Standards UL 508A Type 1
- Depth: 6 inch
- Length / Height: 12 inch
- Type: Electronic and Instrument Enclosures, Terminal and Junction Boxes
- Width/Diameter: 12 inch
-
Supplier: Hammond Manufacturing Company Inc.
Description: Application Designed to insulate and protect controls and components in both indoor and outdoor conditions Ideal for industrial pump controls, waste water, irrigation control along with solar/wind and chemical plants Standards UL 508A Type 1, 2, 3
- Depth: 4 inch
- Length / Height: 8 inch
- Type: Electronic and Instrument Enclosures, Terminal and Junction Boxes
- Width/Diameter: 8 inch
-
Supplier: Hammond Manufacturing Company Inc.
Description: Application Designed to insulate and protect controls and components in both indoor and outdoor conditions Ideal for industrial pump controls, waste water, irrigation control along with solar/wind and chemical plants Standards UL 508A Type 1, 2, 3
- Depth: 4 inch
- Length / Height: 12 inch
- Type: Electronic and Instrument Enclosures, Terminal and Junction Boxes
- Width/Diameter: 10 inch
Find Suppliers by Category Top
Featured Products Top
-
surgery footswitches provide surgeons with the ability to operate key devices like electrocautery units and pumps without using their hands. This functionality ensures that the surgeon can make necessary adjustments swiftly and maintain focus on the procedure (read more)
Browse Foot Switches Datasheets for Linemaster Switch Corporation -
Linemaster's Triple Aero Foot Control Linemaster's triple Aero foot control was designed for users needing to operate multiple functions for their equipment. The water shedding design and (read more)
Browse Foot Switches Datasheets for Linemaster Switch Corporation -
of wires under foot IP68 fully submersible in water Transmitter IPX1 Degree of Protection for the Receiver Rugged cast metal enclosure has sufficient weight to keep the switch from sliding when being operated/ All models have a neoprene cover gasket plus O-rings on the (read more)
Browse Foot Switches Datasheets for Linemaster Switch Corporation -
Brochure for NHL/HPL/HPR/NHM Hot Water Circulation Centrifugal Pumps (read more)
Browse Water Pumps Datasheets for Dickow Pump Company, Inc. -
Centrifugal Pumps Type HZ/HZA HZ / HZA-Pumps are applicated in the industrial and municipal water supply, in pressure increas ing plants, for handling (read more)
Browse Centrifugal Pumps Datasheets for Dickow Pump Company, Inc. -
Festo introduced today the VZWF, a force pilot operated solenoid valve that can be used with water, air, and neutral media. This new valves utilize relatively small solenoids to control high pressures with large nominal diameters. The units can switch at pressures as low as 0 bar and close (read more)
Browse Solenoid Valves Datasheets for Festo Corporation -
Centrifugal Pumps Type HZ/HZA HZ / HZA-Pumps are applicated in the industrial and municipal water supply, in pressure increas ing plants, for handling condensates, for boiler (read more)
Browse Datasheets for Dickow Pump Company, Inc. -
to create a ring of liquid around the edges of the offset vanes. This sealant liquid is highly effective but can create some corrosion issues. The most common liquid is water (sometimes called water ring vacuum pumps), but these can be created to work with any liquid type. The portion of the (read more)
Browse Vacuum Pumps and Vacuum Generators Datasheets for Vooner FloGard LLC -
pumping stations use a variety of pumps in their operations, that are driven by variable frequency drives (VFDs), to propel the water through the many stages of purification along the way. Water treatment plants use pumps to pass fresh (read more)
Browse Line/Load Reactors Datasheets for MTE Corporation -
Screw pumps: standard according to API 676, for mineral and lubricating oils also fluids with low lubricating properties (water + oil, HFC, LFO, HFO). Flows up to 5,000 litres per minute and pressure up to 130 bar (200 bar peak). (read more)
Browse Screw Pumps Datasheets for jbj Techniques Limited
More Information Top
-
International Perspectives on Engineering Education
Technology should reflect social need, affordability, operability, maintainability, sustainability – for example from higher tec solar PV systems to medium and lower tec, such as foot - oper- ated water pumps for African farmers (an innovation is a technology that is new to …
-
NMC-Wollard
A foot - operated water pump control switch is on the top deck between the aft compartments.
-
Environmental Change and Food Security in China
lem, farmers cultivated crops along ridges.28 By the time of the Yuan Dynasty, the development of a foot - operated water pump had improved irrigation.
-
Water: More crop per drop : Nature News
Namanga Ngongi, president of the Alliance for a Green Revolution, says that they are looking into technologies such as foot - operated water pumps and solar-powered drip irrigation.
-
Rural innovation systems and networks: findings from a study of Ethiopian smallholders
… more of the identified crop/technology packages, (b) adoption of one or more complementary cultivation practices (e.g., innovative water management techniques or use of improved seed), (c) ownership of modern production assets (hand- or foot - operated mechanical water pumps and motorized water .
-
New tools
Laterally a rubber tube is connected via a Luer coupling through which water can be pumped by means of an electrical water pump (switch operated by foot ).
-
https://dspace.lib.cranfield.ac.uk/bitstream/1826/4457/1/Joseph_Chidanti_Malunga_thesis_2009.pdf
manually powered water pumping device operated by feet .
-
GLOBAL DISSEMINATION OF MICRO‐IRRIGATION TECHNOLOGIES TO SMALLHOLDER FARMERS
Foot - operated pump for accessing water from a depth of up to 7 m; * pressure treadle pump.
-
https://customer.honeywell.com/resources/techlit/TechLitDocuments/77-0000s/77-1132.pdf
The head is expressed in feet (of water column) which describes pump operation independent of water temperature or density.
-
https://customer.honeywell.com/resources/techlit/TechLitDocuments/77-0000s/77-E1100.pdf
The head is expressed in feet (of water column) which describes pump operation independent of water temperature or density.
Indicates content that may require registration and/or purchase.