Backpack Sprayers. Materials List Sprayer Calibration Rate Calculation Choosing Nozzles Product Measuring Supply List

Transcription

1 Backpack Sprayers Modified for Small Farm Crop Protection Rutgers Snyder Research Extension Farm Staff Edited by John Grande and Jack Rabin Companion Handouts for the Backpack Sprayer Videos Materials List Sprayer Calibration Rate Calculation Choosing Nozzles Product Measuring Supply List

2 Backpack Sprayers Video 2 Companion Handout Materials List Spraywand Conversion to TeeJet System No endorsement is implied for products and manufacturers listed here. Resources are listed for informational purposes only. Part Description catalog No. * 3/8 ID rubber chemical resistant spray hose ** CF pressure regulating valve 11/16 straight thread (other available) 14.5 psi Yellow 21 psi Red 29 psi Blue Supplier Sources Multiple Gate CFV Solutions (772) Purchase the 11/16 straight thread List Price (2012) ** 24 brass curved extension TeeJet Spraying Systems $ Quick TeeJet 11/16 nozzle body TeeJet Spraying Systems $5.25 QJT-NYB Turbo FloodJet TF-VS2 or VS3 TeeJet Spraying Systems $13.56 TeeJet spray tips TeeJet Spraying Systems many available Gasket nylon CP8635-NY TeeJet Spraying Systems $1.54 Rubber seal gasket CP TeeJet Spraying Systems $1.11 EPR Quick TeeJet caps NYR TeeJet Spraying System $1.22 MeterJet spray gun for dose spot TeeJet Spraying Systems $ treatments * Replace hose only if existing OEM hose inadequate ** Gate CFV Solutions (Global Agricultural Technology and Engineering), 100 Sebastian Industrial Place, Sebastian, FL USA, ; *** Brass trigger valve can be substituted with plastic to save money for light duty use **** TeeJet Spraying Systems, 124A West Harrisburg St., Dillsburg, PA $19.95 each TeeJet strainer check valve 50 **** TeeJet Spraying Systems mesh 4193-PP Specify matching psi 4 barbed swivel TeeJet Spraying Systems $17.66 Valve handle TeeJet Spraying Systems $12.32 *** Trigger valve brass 6466 TeeJet Spraying Systems $52.71 (alternate trigger valve plastic B22650-PP-1/4) $28.79

3 Sprayer Characteristics Our comparison testing determined that sprayer designs with the following four characteristics worked better than others: 1) Sprayers with large internally mounted piston pumps are more efficient. An internally mounted pump that leaks is much better than an externally mounted pump that leaks, reducing your exposure to pesticides. 2) Leveraging pump handle designs reduce arm fatigue operating the pump. 3) Lightweight tank design and carrier system to reduce overall weight. 4) Large fill spouts offset to the side to allow for easier filling and pouring out of products along with a pickup handle in the middle of the sprayer which is a nice addition to handling a fairly heavy item when filled with solution. Model Availability Updates Gate pressure regulating valve manufacturer source changed to Gate CFV, April Worldwide manufacturing of sprayer brands and models changes over time. As of 2013, the Shindaiwa SP415 shown on the videos, and a very efficient backpack sprayer in our evaluations, is no longer sold. Jacto model SP416 is a new model in 2013, with similar specifications and performance as the Shindaiwa SP415. The Jacto SP416 has a new trigger valve that accepts the 24- inch TeeJet brass extension shown in our materials list. Adding TeeJet trigger valve and valve handle, while not a necessary accessory, enables use of the TeeJet barbed swivel, improving the spraywand balance and user comfort. H.D. Hudson offers a sprayer, model Regulator Bak-Pak Poly 4 gal, which is similar in features to the Jacto SP 416 but requires complete spray wand replacement for TeeJet conversion. Also offered is a good quality rechargeable battery powered backpack sprayer, NeverPump Bak-Pak Sprayer Model Updated April 2015, J. Grande, J. Rabin

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