Reddit reviews Non-Spring Return Damper Actuator
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Price For: Each Item: Non-Spring Return Damper Actuator Includes: Mounting Hardware Shaft Type: 1/4" to 5/8" Round or 5/16" to 3/4" Square Height: 6-9/16" Depth: 2-11/32" Timing: 95 sec. Power Rating: 1.5W Torque: 45 in.-lb. Mounting Type: Direct Mount Spring Return: No Ambient Temp. Range: -22 Degrees to 122 Degrees F Voltage: 24VAC/DC Width: 2-19/32"Signal Type: 2 to 10VDC, 4 to 20mA Stroke Deg.: 0 to 95 Country of Origin (subject to change): United States
We have pairs dampers that close off recirculation and open fresh air at the same time for a given space. Each pair is connected to a mechanical actuator and then to a computer.
To prevent contamination we pasteurize the compost as part of the Phase II composting and keep it under a back pressure after that. We use some pesticides for flies and just generally sanitize boots and anything going into the rooms with the compost. Very few people go into the rooms until there are mushrooms ready to pick. We have it pretty streamlined how things get moved throughout the day, what equipment can be used on what things and what areas need pressurization. If we need to water casing or probe for hot compost, then back pressure is applied to the room for contaminants and fresh air to breath(the door is opened slightly so we don't mess up the fans). At the end of the day, contaminants do very little real damage to us and we don't take that for granted. We know that can change.
We do Oysters and Shiitake. Shiitake because of demand(and someone else makes the blocks for us in some laboratory-like environment, we just babysit while they grow mushrooms). Oysters because they are easy if you got the growing spaces.
I like the white and brown mushrooms the most(the standard A. bisporus). Growing those right is the real game. Exotics are small side gig because some callers want to add them in their order.
Managing the mushrooms? Well moving the compost while keeping clean takes like 12 people's full-time job. Irrigating the casing is 6. Managing the compost, the casing, the growing strategy, and watching for problems agricultural or mechanical is like 9 more(it's a 24 hour thing). Rather time consuming. Whole place employs 200 and produces 250,000+lbs a week. There are much bigger farms farther north. Texas isn't ideal for obvious reasons.