Series Gradual
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 Square Gradual Graduated Gray color ND8 Plexiglass Filter For Cokin P Series $2.48 Time Remaining: 19d 14h 44m Buy It Now for only: $2.48 |
 6 filter kit ND2 ND4 ND8 + Gradual ND2 ND4 ND8 + case for Cokin P series $9.99 Time Remaining: 15h 16m |
 Gradual Blue Tobacco Colour Filter For Cokin P Series $2.55 Time Remaining: 21d 20h 27m Buy It Now for only: $2.55 |
 6pcs Full ND + Gradual ND 2 4 8 Conversion Filter Kit set for Cokin P Series $9.99 (1 Bid) Time Remaining: 1d 16h 53m |
 Square Gradual Graduated Gray color ND4 Plexiglass Filter For Cokin P Series $2.48 Time Remaining: 19d 14h 22m Buy It Now for only: $2.48 |
 6pcs Full ND2 ND4 ND8 gradual ND2 4 8 filter set and case for Cokin P Series $34.49 Time Remaining: 2d 10h 59m |
 6pcs Gradual+Full ND2 ND4 ND8 Filter Kit Cokin P Series $19.40 Time Remaining: 5d 19h 27m Buy It Now for only: $19.40 |
 Filter set for Cokin P Series 77MM adapter ring + holder + hood + gradual ND4 $12.34 Time Remaining: 3d 12h 14m |
 Selens Square Filter Kit 10 in 1 Holder+Gradual Grey ND4 ND8 for Cokin P Series $29.69 Time Remaining: 1d 19h 39m Buy It Now for only: $29.69 |
 Square Gradual ND8 Grey Color Filter for Cokin P Series $3.65 Time Remaining: 25d 20h 8m Buy It Now for only: $3.65 |
 Gradual Tobacco Filter Cokin A Series Size $10.00 Time Remaining: 3d 18h 52m |
 Fotga Gradual ND2 ND4 ND8 filter set for cokin p series $10.99 Time Remaining: 28d 13h 47m Buy It Now for only: $10.99 |
 Pink Gradual Filter Cokin A Series Size $10.00 Time Remaining: 3d 18h 56m |
 ND2 ND4 ND8 + Gradual ND2 ND4 ND8 + filter case + 77mm adapter f Cokin P series $27.53 Time Remaining: 23d 18h 13m Buy It Now for only: $27.53 |
 Selens Square Filter Kit 10 in 1 Holder+Gradual Grey ND4 ND8 for Cokin P Series $29.99 Time Remaining: 4d 7h 5m |
 Cokin Series P Gradual Grey Neutral Density Filter ND4X G2 Medium P121M $33.44 Time Remaining: 9d 4h 29m Buy It Now for only: $33.44 |
 Selens Square Filter Kit 6in1 Holder+Gradual Grey ND2 ND4 ND8 for Cokin P Series $19.99 Time Remaining: 4d 9h 5m |
 Gradual Brown Tobacco Colour Filter For Cokin P Series $2.55 Time Remaining: 21d 20h 13m Buy It Now for only: $2.55 |
 NEW Square Gradual Graduated Gray ND8 Plexiglass Filter for Cokin P Series $3.50 Time Remaining: 15d 22h 57m Buy It Now for only: $3.50 |
 gradual Orange Plexiglas Filter for Cokin P series color conversion $2.32 (4 Bids) Time Remaining: 4d 22h 58m |
 6x ND2 + ND4 + ND8 Gradual Filter kit For Cokin P Series 77mm $24.69 Time Remaining: 24d 18h 11m Buy It Now for only: $24.69 |
 gradual Grey Plexiglas color conversion Filter for Cokin P series $0.99 (1 Bid) Time Remaining: 4d 22h 59m |
 Square Gradual Graduated Gray color ND2 Plexiglass Filter For Cokin P Series $2.50 Time Remaining: 19d 13h 54m Buy It Now for only: $2.50 |
 gradual Blue Plexiglas Filter for Cokin P series color conversion $1.34 (2 Bids) Time Remaining: 4d 23h |
 Square Color Filter Gradual Grey for Cokin P Series $3.10 Time Remaining: 23h 19m Buy It Now for only: $3.10 |
 Selens Square Filter Kit 6in1 Holder+Gradual Grey ND2 ND4 ND8 for Cokin P Series $19.50 Time Remaining: 26d 22h 22m Buy It Now for only: $19.50 |
 gradual Mauve Plexiglas Filter for Cokin P series color conversion $0.99 (1 Bid) Time Remaining: 4d 23h 1m |
 Selens Square Filter Kit 10 in 1 Holder+Gradual Grey ND4 ND8 for Cokin P Series $29.69 Time Remaining: 14d 17h 52m Buy It Now for only: $29.69 |
 Gradual Pink Plexiglas Filter for Cokin P series color conversion $0.99 (1 Bid) Time Remaining: 4d 23h 2m |
 Gradual grey Colour Filter for Cokin P series new $3.79 Time Remaining: 16d 22h 59m Buy It Now for only: $3.79 |
 gradual Green Plexiglas Filter for Cokin P series color conversion $0.99 (1 Bid) Time Remaining: 4d 23h 3m |
 Gradual ND2 ND4 ND8 filter set f cokin p series w case $12.97 Time Remaining: 13d 18h 30m Buy It Now for only: $12.97 |
 Selens Square Filter Kit 10 in 1 Holder+Gradual Grey ND4 ND8 for Cokin P Series $29.99 Time Remaining: 5d 7h 5m |
 Selens Square Filter Kit 10 in 1 Holder+Gradual Grey ND4 ND8 for Cokin P Series $29.70 Time Remaining: 9d 18h 7m Buy It Now for only: $29.70 |
 Selens Square Filter Kit 5in1 Holder+Gradual Grey ND4 ND8 for Cokin P Series $18.30 Time Remaining: 9d 18h 7m Buy It Now for only: $18.30 |
 Selens Square Filter Kit 6in1 Holder+Gradual Grey ND2 ND4 ND8 for Cokin P Series $19.99 Time Remaining: 5d 9h 5m |
 Square Color Filter Gradual Blue for Cokin P Series $3.10 Time Remaining: 23h 19m Buy It Now for only: $3.10 |
 Square filter kit 10 in 1 holder gradual red blue ND4 for Cokin P Series $40.24 Time Remaining: 5d 12h 14m |
 New Square Gradual Colour Filter 10pcs Container storage Box for Cokin P Series $5.99 Time Remaining: 8d 19h 14m Buy It Now for only: $5.99 |
 Graduated gradual green square filter f Cokin P series $1.39 Time Remaining: 5d 23h 19m Buy It Now for only: $3.65 |
 6pcs ND2 ND4 ND8 + Gradual ND2 4 8 filter set for cokin p series $19.00 Time Remaining: 17d 21h 49m Buy It Now for only: $19.00 |
 Gradual ND2 ND density color filter for Cokin P series $1.39 Time Remaining: 5d 23h 19m Buy It Now for only: $3.65 |
 Square Gradual ND4 Grey Color Filter for Cokin P Series $3.65 Time Remaining: 25d 20h 8m Buy It Now for only: $3.65 |
 Filter set for Cokin P Series 67MM adapter ring + holder + hood + gradual ND4 $11.49 Time Remaining: 25d 13h 10m Buy It Now for only: $11.49 |
 Graduated gradual orange square filter f Cokin P series $1.39 Time Remaining: 5d 23h 19m Buy It Now for only: $3.65 |
 6pcs ND2 ND4 ND8 + Gradual ND2 4 8 Filter Set for Cokin P Series with Case LF3 $18.89 Time Remaining: 21h 25m Buy It Now for only: $18.89 |
 Graduated gradual yellow square filter f Cokin P series $1.39 Time Remaining: 5d 23h 19m Buy It Now for only: $3.65 |
 58mm Ring Adapter + ND2 ND4 ND8 gradual Gray Blue Orange filter f Cokin P series $28.48 Time Remaining: 11d 19h 19m Buy It Now for only: $28.48 |
 Gradual ND8 ND density color filter for Cokin P series $1.39 Time Remaining: 5d 23h 19m Buy It Now for only: $3.65 |
 Full ND + Gradual ND Filter Kit for Cokin P Series 6pcs $30.00 Time Remaining: 13d 17h 18m Buy It Now for only: $30.00 |
 Gradual blue dark Colour Filter for Cokin P series $3.79 Time Remaining: 16d 22h 58m Buy It Now for only: $3.79 |
 Graduated gradual brown square filter f Cokin P series $1.39 Time Remaining: 5d 23h 19m Buy It Now for only: $3.65 |
 6pc Gradual ND2 ND4 ND8 Color Filter Kit Cokin P Series $19.40 Time Remaining: 5d 19h 47m Buy It Now for only: $19.40 |
 Graduated gradual purple square filter f Cokin P series $1.39 Time Remaining: 5d 23h 19m Buy It Now for only: $3.65 |
 3pcs Gradual ND2 ND4 ND8 Filter Kit for Cokin P Series $12.97 Time Remaining: 5d 18h 29m Buy It Now for only: $12.97 |
 Gradual ND4 ND density color filter for Cokin P series $1.39 Time Remaining: 5d 23h 19m Buy It Now for only: $3.65 |
 77mm Graduated ND Gradual Grey for sony alpha series $7.99 Time Remaining: 20h 1m Buy It Now for only: $7.99 |
 Graduated gradual red square filter for Cokin P series $1.39 Time Remaining: 5d 23h 19m Buy It Now for only: $3.65 |
 Square filter kit 6in1 holder + gradual ND2 ND4 ND8 and pouch for Cokin P Series $29.99 Time Remaining: 19d 10h 14m Buy It Now for only: $29.99 |
 Graduated gradual sunset square filter f Cokin P series $2.99 Time Remaining: 29d 18h 44m Buy It Now for only: $2.99 |
 Graduated gradual Pink square color conversion filter f Cokin P series $1.39 Time Remaining: 5d 23h 23m Buy It Now for only: $3.49 |
 3pcs Filter Set For Cokin P Series GND2 GND4 GND8 Graduated Gradual Kit LF2 $12.99 Time Remaining: 2d 13h 5m Buy It Now for only: $12.99 |
 Selens Square Filter Kit 6in1 Holder+Gradual Grey ND2 ND4 ND8 for Cokin P Series $19.99 Time Remaining: 6d 9h 5m |
 Graduated gradual blue square filter f Cokin P series $2.99 Time Remaining: 29d 18h 55m Buy It Now for only: $2.99 |
 Selens Square Filter Kit 10 in 1 Holder+Gradual Grey ND4 ND8 for Cokin P Series $29.99 Time Remaining: 7h 5m |
 3pcs Gradual ND2 ND4 ND8 Filter Kit Set for Cokin P Series GND2 GND4 GND8 LF2 $12.99 Time Remaining: 2d 13h 5m Buy It Now for only: $12.99 |
 Selens Square Filter Kit 6in1 Holder+Gradual Grey ND2 ND4 ND8 for Cokin P Series $19.99 (1 Bid) Time Remaining: 9h 5m |
 TianYa Gradual grey Colour Filter for Cokin P series $7.38 Time Remaining: 13d 7h 28m Buy It Now for only: $7.38 |
 77MM RING ADAPTER+GRADUAL ND2 SQUARE FILTER+ HOLDER +HOOD FOR COKIN P SERIES $11.92 Time Remaining: 9d 8h 43m Buy It Now for only: $11.92 |
 Selens Square Filter Kit 10 in 1 Holder+Gradual Grey ND4 ND8 for Cokin P Series $29.99 Time Remaining: 1d 7h 5m |
 new 6pcs ND2 ND4 ND8 + Gradual ND2 4 8 filter set fOR cokin p series $19.00 Time Remaining: 9d 23h 20m Buy It Now for only: $19.00 |
 Selens Square Filter Kit 10 in 1 Holder+Gradual Grey ND4 ND8 for Cokin P Series $29.99 Time Remaining: 6d 7h 5m |
 Graduated gradual ND2 ND 2 ND4 ND 4 ND8 ND 8 filter +pouch for Cokin P seriesUS $21.95 Time Remaining: 5d 12h 59m Buy It Now for only: $21.95 |
 COKIN A SERIES A125 GRADUAL TOBACCO T2 FILTER $4.70 Time Remaining: 9d 7h 17m |
 Graduated gradual ND2 ND 2 ND4 ND 4 ND8 ND 8 filter +pouch for Cokin P seriesUS $21.95 Time Remaining: 5d 12h 59m Buy It Now for only: $21.95 |
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The Best Feature of the Hunter Hpv Series of Valves
The Hunter HPV series of valves has all the usual features you would expect from a product marketed from Hunter, the self-professed "innovators of irrigation." First, the valves are made from solid PVC material in construction. What is the significance of PVC? This is ultra-hard material that is also resistant to corrosion and UV-rays. However, this strength is not enough for Hunter. They have also added rigid internal support so as to protect the system from stress failure. After all, you have material flowing at very high-pressure speeds so some reinforcement is to be expected.
The Hunter HPV series of valves was given even more "weight" with a captive diaphragm and solenoid plunger. These features allow for protection against leaks and lifelong capability. Tight bonnet screws ensure that there are no lost parts, whereas internal manual bleed technology keeps the valve box very dry for optimal operation. Though flow control may not be present on some valve products, for the Hunter HPV series of valves maximum flow control is offered to the user, so precise that you can actually control the flow of each system zone.
However, what really makes the Hunter HPV series of valves rise up from the ordinary is its amazing porting system. This feature allows the gradual close of a valve just enough to suppress water hammer, while filtering out all the dirty water. It also has a low flow capability for drip applications. This feature qualifies the Hunter HPV series of valves as a self-flushing filtering system-a rare option for such an economically priced product.
Hunter Industries prides itself on creating products strong enough for professional use, as well as products that are easy to install for homeowners. Hunter has stated that this valve system is ideal for home irrigation projects and possible for light commercial applications. Affordability is the main concern here, and for such a low priced system the Hunter HPV series of valves is also a powerful one. The Hunter Company has built a reputation for quality products, having first come on the scene in 1981 in a blaze of glory with their PGP series of sprayers. The company continues to innovate new solutions even today.
About the Author
Richard Gilliland is VP of www.GreenMarkIrrigation.com - the largest wholesale dealer and distributor for Hunter HPV Series valves and sprinkler.
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