This manual hand pump is a reliable and efficient way to pump water from bathtub to rain barrel so that this valuable resource could be reused on garden vegetation. You see, the city of LA gave rainbarrels courtesy of taxpayers. Good intention on our officials, however, poor judgement because it hardly ever rains in Southern CA. We took advantage of this program and got the rainbarrel, but only because i intended to take this a bit further and really enhance our water conservation efforts; not because we are hardcore environmentalists, but because i just hate to see water clean potable water used in our garden. The grey water from tub/shower could effectively be used on our landscaping instead. The first challeng was how to divert tub water to rain barrel. Filling a bucket is out of the question so a pragmatic approach was developed. The primary choices were either an electric submersible pump, or a manual crank pump. For safety considerations, manual pump was the safest alternative since bathroom floor does get we, and not a good choice when electric cord is submerged under wated. In comparing pumps, this crank type pumps about 1 gallon for every 4 pumps on the lever after fully primed (flow rate established). The "wind up pumps" require about 14 twists to move 1 gallon. Its a no brainer why this pump was the optimal choice, coupled with being much more cost effective at appx $20. Refer to the image as it will give perspective on how this works. Essentially, the ribbed grey hose ($12 at Home Depot) is connected to the intake portion of pump (secured with hose clamp). The exhaust portion of the pump is threaded and easily connects to standard waterhose which is run under house crawl space to the rain barrel. The pump itself is secured to wall stud using "U brackets."The relative positioning of pump and barrel, in terms of height, requires consideration to atmostpheric pressure to prevent backflow. If tub is poitioned lower, a check valve can be used toprevent backflow. In our case, because this particular bathroom has higher elevation than rain barrel, water would not backflow to tub.In terms of final result, the darn system thing works great, and is a fun, quick and dirty lil project the wife and i did on a saturday morning. The force needed to pump lever does not require much exertion either. More time was spent looking around at home depot to determine if we should use PVC, brass, etc, from tub to pump. This pump is same type pump we used in the Army for dispensing lube fliuds and ive never seen one fail, that said, this should last a while, even with water, because housing is not made of cast iron (unlike crank type pumps). To put the water savings into perspective, lets estimate that each person uses approximately 25 gallons per day for a typical shower (or twice daily even) and with a family of four, that can amount to at least 100 gallons per day in water savings. Savings because this is about how much we use daily to water plants, lawn, etc. Moreover, watering garden no longer requires using freash potable water from the faucet. I suppose one coud do this same thing with reservior tanks, power pump, fill sensors, hardwiring, etc, but can easily cost several thousand dollars. In my humble and honest opinion, this pump as it is set up, gets the job done in a safe, cost effective and efficient manner. This was fun and easy, highly recommend this pump for the weekend warrior looking to save water through reuse.Works well. As others have said it does bind at times but no big deal, you just don't get a full stroke on that particular pump stroke. It does not accept garden hoses as the threads are slightly different. I had to heat up a cut off end of a hose with a propane tourch to slide it over the end of the nozzel and then use a hose clamp. But all worked well after assembly. In fact it took less strokes to empty a 55 gallon drum than what I expected - about 500 strokes. I used it to pump # 2 fuel (heating) oil.We bought this pump to transfer water from our rain barrels. It took a small adjustment to put the handle clevis on the piston (took a pair of pliers and squeezed it narrower to fit the washer on the split-pin side). After that, it went together without any problems and works flawlessly. We are very happy with it. It takes about 25 pumps to fill our 2 gallon watering can and is very easy to use, as even our 2 1/2 year old enjoys using it.The only other hiccup was with the above mentioned washer, it came packaged in a giant, 1+ gallon plastic bag that we we almost discarded as excess packaging before noticing it.High quality construction, and the two types of pump outlet faucets are handy.The telescoping vertical shaft adapts well to different capacity drums. Mine is 55 gallons.The only flaw that I see on my unit is a slight discoloration on the chrome-plated faucet. Minor cosmetic issue, and doesn't affect pump operation.I use this to extract clear clear, viscous "smoke oil" that I use for my aerobatic airplane system.So far, so good. I'm impressed.Ordered this pump to evacuate oil from a 35 gallon plastic storage drum. Luckily it matched perfectly to my 2" bung size. It assembled easily & worked smoothly & flawlessly as I was able to quickly empty my drum. My only recommendations would be to offer an optional drip pan. I engineered my own but it would have been nice to have the option. Also it will only fit a 2" bung size, so check to see if yours is this size or you'll be scouring the local industrial hardware stores for an adapter. To summarize, I WOULD recommend this Pump even if you need to buy the larger bung adapter & despite the fact that it does not have an optional drip pan.This is a very sturdy, solid pump. The seller was very prompt and our order was filled correctly and on time. The lack of instructions was a bit challenging for us. We were pumping hydrogen peroxide out of a 50 gallon drum and the pump didn't reach down to the bottom beyond the lower 1/3 of the tank, so a longer extension on the pipe would have worked better for us.used it to empty a bobcat fuel tank. The pump took less than 10 min. for ten gallons of diesel. I think the extension should have some sort of locking ring. For the price I would buy again if I had to.I have had 5 of these for almost a year. Only one has gone bad so far where as other brands I have bought have had a much higher failure rate. I will keep this a 5 star review unless I have problems getting the broken one warrantied.