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Cheap CNC Dos and Don'ts
LEDs & Lights Tools and Materials
LEDs and Lighting Class
Hi, I have an important question to ask you: I have a commercial vacuum tube solar heater and am very happy with it however this year I had a non-return valve get stuck open and the hot water almost disappeared completely from the system. Now I have just finished building a batch one like yours for my parents and would like to ask this: do I need to add some kind of non-return valve to prevent hot water to escape towards the cold water tank which sits higher in this setup? My guess is yes because hot water will try to rise up even though the batch tank's inlet and outlet on my design are at the bottom.Thanks for posting this instructable and nice job.
Laser Cutting Class
Troubleshooting + Wrap-up
Mixing + Pouring Concrete
Welcome To Concrete
Lampshades: Support Hardware & How To Choose Them
Testing Your Connections
Lamp Part & Wiring Intro
6 Ways to Reduce Planer Snipe
5 Things You Can Make From Light Bulbs
DIY Irrigation Pots - a modern take on an ancient technique
Mini Cyclone Bucket Dust Collector
super easy cyclone!
Easy Generator to Home Hook Up
A Soft Industrial Pipe Bed Frame
Make Smoke Without Heat Using Common Chemicals
How to refill a "disposable" Brita brand water pitcher filter with activated carbon.
LED on AC Mains
Coin Sorting Machine (Runs On Gravity)
Simple Prybar for pallets
Strawberry Leather Preserve -Two Methods
How To Make High Grade Natural Beeswax Leather Polish and Conditioner
$10 Eco Detergent (septic safe!)
Dining Table with Side Extensions
Make Sliding Barn Doors Using Skateboard Wheels
7 Healthy Sorbet Recipes
Drilled Sea Glass Necklace
How to make an Ergonomic USB Mouse (Ergo Mouse) - made from Styrofoam
MAKE A FLASHLIGHT THAT DOESN'T NEED REPLACEMENT BULBS OR BATTERIES!
Lip Smackin' BBQ Sauce
Homemade BBQ Sauce with option to can it
My Table Saw from a Circular Saw Redone
How to Make a Solder Buddy (from sheet plastic)
Frankenstein Laser Engraver
Homemade Lemon Drops
Stellar-X Pallet Table
Cube Cardboard Lamp
Homemade Air Freshener Gel
Recycled Hard Drive Desk Clock
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