today
I cut a few maples down the sap was poring out. I had large mix of taps in this year. My flow had really slowed down so I pulled the taps and really took a hard look at which ones had totally dried up. my 5/16 with 17 inches vacuum on sap sucker
I saw no difference from check valves to strait stubby. The clear ones of both had the highest % still running. Many of black one had stopped
3/16 with 3 year old tap were still running a week after I stopped. sap on 3/16 was also clearer
2012
12 X16 sugar shack
2X6 Patrick Phaneuf hood/pre-heater
260 taps tubing with guzzler and 12 buckets
Rays 250 RO
950 John Deere