Head Knob
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US $12.50
This is the unit which removes dirt and debris from a body of water such as a swimming pool and or spa. This piece of equipment is one of the most important because a crystal blue environment depends on how this apparatus functions.
Some of the parts of a cartridge filter are as follows:
o Upper Knob and or Clamp Assembly - Usually on the top of the unit and when unscrewed releases the filter head. Note: Always make sure the pump is turned OFF and the air pressure inside the tank has been released before loosening the upper knob.
o Tank Head - Provides easy access to the inner cartridge element. Usually can be rotated to position the pressure gauge and manual air relief valve in a convenient position.
o Tank - Unit in which the element is housed.
o Air Relief Valve - Allows for the purging of air which is inside the unit.
o Pressure Gauge - Usually reads 0-60 PSI and advises when the element is dirty and is in need of disassembly and cleaning.
o Element - Usually engineered of high quality reinforced polyester with molded end caps. This unit can be removed and cleaned many times.
o Inlet and Outlet - Ports which are used to connect the filter to the piping which allows the water to flow in and out. Depending on the brand and model, these ports can be either a slip or threaded port.
o Lower Plug - Used to drain the unit when necessary.
How should a cartridge filter be cleaned and serviced?
o TURN OFF THE PUMP SYSTEM
o Release the air from the tank by opening the air relief valve.
o Turn the top knob or release the upper clamp assembly and remove the top of the unit.
o Remove the element from the tank.
o Use a garden hose and a pressure nozzle to remove dirt and debris from the material.
o Replace the cartridge back into the tank.
o Replace the top.
o Re-tighten the top knob and or reinstall the clamp assembly and hand tighten.
o Restart the pump system, Bleed out the air inside the tank and close the air relief valve assembly.
o Check the system for leaks.
o Take note of the pressure gauge reading.
How can you insure your filter will last as long as possible?
Cleaning your filter on a regular basis is very important. As the element is "loaded" which dirt and debris, more and more pressure is asserted on the unit. If the unit is allowed to continue to operate without being cleaned the cartridge can and will be damaged. Regular cleaning removes the dirt and allows operation at a high level.
How important is the pressure gauge?
Checking the pressure gauge on the top of the tank when the unit is clean and noting the reading is very important. When the pressure inside the unit rises 5-7 pounds it is time to perform a cleaning. Example: Clean Reading = 15 pounds, Pressure goes up to 21 pounds = Time to clean.
Should the cartridge be washed with Muriatic Acid on a regular basis?
Acid washing shortens the life of the cartridge and should be done on a limited basis, if at all. Acid will remove built up calcium inside the element. When using muriatic acid use extreme caution, proper safety equipment and follow safety regulations for disposal of the used muriatic acid. Products are available for soaking to remove excess oils; these should be used as per manufactures recommendations. Remember that when cleaning with muriatic acid, if oils are present in the material, acid can "lock" the oil into the material. It is most important that a product to remove oils be utilized BEFORE acid is used for calcium removal.
How and why does calcium build up on the element?
Poor water chemistry (high calcium and pH levels) in your swimming pool and spa water will contribute to calcium build up. Regular testing is critical and it is important to monitor these levels in order to maintain cleaner and better functioning filters.
The filter in your swimming pool equipment is certainly one of the most important units in your system. Having it operate at peak level is very important to maintaining crystal clear and sparkling water. Take a few minutes each week to monitor and clean this apparatus and have fun and enjoyment with your pool and spa. Disregard your system and plan on spending unnecessary money and time correcting a variety of problems.
Ron Burr has been involved in the swimming pool industry since 1978 and is an active, licensed commercial swimming pool and spa contractor in South Florida. Ron is the owner of One Stop Pool Supplies http://onestoppoolsupplies.com/ a great place to visit for all your swimming pool and spa needs. Visit our store online, we represent all the major pool and spa manufactures and would count it a privilege to serve you.
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Krups Knob $1.99 Knob |
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Head $6 Head |
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Head On $12.49 Head On |
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No Head $11.49 No Head |
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Multi-functional C Shaped Tripod Head (Black) $8.28 - Brand new and high quality professional tripod ball head camera ballhead.- The ball head is made from black anodized aluminum and offer three operation knobs.- The large knob locks the ball head in place, the smaller knob provide drag adjustment.- An additional smaller knob located at the base of the - Ballhead, locks the independent pan movement.- Using both the main locking knob and the drag adjustment knob, Camera Ball Head is possible to set the desired drag and locking action for different cameras. |
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Anne at Home 3643 Indian Head Knob in Rubbed Bronze $57.96 Never forget the finishing touch Fashioned with the most delicate detail the pewter hardware from Anne at Home is crafted with the same manufacturing techniques used to create fine jewelry and will gracefully accent the beauty already present in your home. Cross the plains with this majestic Native American knob. Standard 8/32 x 7/8 long screw included. Free of lead and chromate hazards. Nonreactive to oils and UV rays and features great protection from oxidation. Excellent color retention durability and scratch resistance. Finish: Rubbed Bronze. Dimensions:. Width: 2 . Projection: 1.5 . Height: 2.5 . Hide: Pewter. |
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Head To Head $14.29 Head To Head |
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Stockton Heath Forged Shovel With 48-Inch Knob Handle $168 -Made especially for the US market -this knob-handled Fox Shovel is 59" long overall -The head size is 12" x 9.5" -The carbon steel head is super heat treated and tempered for strength and features an extra long socket -The head has a hammer finish epoxy coating for improved resistance to rust and scratches and the shaft is weatherproofed for durability -25 year guarantee. |
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Zvex Nano Head Tube Guitar Amp Head $499 The Nano Head by Z.Vex Amps is a one-half watt (distorted) powerhouse that will surprise you with its apparent volume. Plug it into a 4x12 (or any 8 to 16 ohm speaker) and listen to it roar! This amp is voiced to deliver classic rock tone, with a very high level of crunch available if it's wanted. Just crank the volume knob around to the level of distortion you desire, from a very quiet (one tenth watt) clean mode to a micro-Marshall blast when cranked up. It does a great job of emulating big amps at very reasonable volumes, which makes it exceptionally nice for recording.Controls: Bright switch: Brighter to the right. Has more effect at lower volumes, like a Fender bright switch. Volume: Adjusts from quite clean to very crunchy/dirty. Thickness: Positions are Normal, Thin, and Fat. As you use more gain, you may wish to thin out the signal. The fat setting is best for clean shivery tones and overblown bass fuzz. Mellow control: Positions are Mellow 2/Normal/Mellow 1. Use it to roll off treble if needed after first distortion stage. Mellow 2 is mellower, naturally, and Normal is brightest. |
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Anne at Home 3701 Buffalo Head Nickel Knob in Pewter Matte $26.33 Never forget the finishing touch Fashioned with the most delicate detail the pewter hardware from Anne at Home is crafted with the same manufacturing techniques used to create fine jewelry and will gracefully accent the beauty already present in your home. Celebrate the spirit of the old west with a replica of a nickel featuring a buffalo. Standard 8/32 x 7/8 long screw included. Free of lead and chromate hazards. Nonreactive to oils and UV rays and features great protection from oxidation. Excellent color retention durability and scratch resistance. Finish: Pewter Matte. Dimensions:. Projection: 0.75 . Diameter: 1.5 . Hide: Pewter. |
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Anne at Home 4061 Hare Head Knob in Pewter Matte $51.39 Never forget the finishing touch Fashioned with the most delicate detail the pewter hardware from Anne at Home is crafted with the same manufacturing techniques used to create fine jewelry and will gracefully accent the beauty already present in your home. Quick as a bunny the sweet rabbit knobs and pulls from Anne at Home will hop right into your heart. Standard 8/32 x 7/8 long screw included. Free of lead and chromate hazards. Nonreactive to oils and UV rays and features great protection from oxidation. Excellent color retention durability and scratch resistance. Dimensions:. Width: 1.75 . Projection: 1.25 . Height: 3 . Finish: Pewter Matte. Hide: Pewter. |
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Anne at Home 1847 Bear Head Knob in Matte Black $38.88 11/2 by 11/4 overall 13/4 projection. Hand cast and hand finished 100 percent lead free pewter with brass finding. A durable lacquer coating is applied for long lasting finish protection. Made in the USA. Supplied with a standard 832 by 7/8 machine screw. Finish: Matte Black. |
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Spear and Jackson Knob Handle Forged Fox Shovel $87.99 Spear & Jackson Fox Shovel with 48 inch Knob Handle Quality and Durability Spear & Jackson Fox Shovel with a 48 inch knob handle. British made quality garden tool with a 25 year guarantee. The shovel head is made from forged ultra strong carbon steel with an extra long socket attached to a 48 inch long knob hardwood handle. Overall length is 60 inches; such a back saver! Solid Forged Heads 48" long Hardwood Knob Handle 60" Overall Length Made In England Ships Quickly! A Bosmere Design The Bosmere group has been established in the world of Home, Garden, and Leisure for over 25 years. It has been established in North America for over 15 years and serves Canada and Central and South America, as well. Bosmere is well known for quality products that include ample instructions and superior customer service. |
