Hello question on which pipe tap I should order off of the bay. I'm tapping a steel water well drill bit with a 1" NPT steel pipe (the one from home depot) schedule 40. I ordered this tap from ebay
1 in. -11-1/2 carbon steel npt pipe tap | drill america series qualtech dwtpt
It is too small. I don't know if it was advertised wrong because the ad also said this:
DWTPT1/2
Hand Tool Type: Taps Included Attachments: Pipe Tap Thread Standard: NPT UPC:
705353367281
Individual/Set: Individual Color:
Does not apply
Product Width (in.): 2 Manufacturer: Drill America Product Height (in.): 2 Product Depth (in.): 6 Tools Product Type: Hand Tool Tool Type: Tap Thread spacing: 14 MPN:
DWTPT1/2
Number of Pieces: 1 Measurement Standard: USS
Now I found another 1" tap and that one is 1" NPT 1" 9/64 drill. Which one is the right tap?
A 1x11.5 NPT tap is for a 1 inch nominal pipe size ( schedule 40 is 1.375 OD x 1.050 ID) cutting 11-1/2 threads per inch. A 1.125 drill is used to drill the pipe ID if a tapered reamer is being used. A 1.150 drill is used to drill the pipe ID if a tapered reamer is not being used. I believe you have the correct tap. Drill and/or ream as stated and the tap will cut the threads. Drill deep enough so the tap is not cutting threads into 1.050 ID.
I think they sent me the wrong tap. Even thought the listing was for a 1" they must have sent me a 1/2". I appreciate the lightning fast responses. I'm going to return this one and try this again maybe they will send me the correct size this time. I was second guessing myself thinking I ordered the wrong size.
The threaded part in the photos looks like a short nipple, not the end of a piece of pipe. Why are you making threads on the ID when threads exist on the OD. Nipples have a smaller ID than the pipes they connect. I am not a plumber but my guess is the ID of a nipple is not controlled like the ID of a scheduled pipe. I am confused as to what you are trying to accomplish. Please explain.
I'm tapping a steel water well drill bit with a 1" NPT steel pipe (the one from home depot) schedule 40.
I also don’t understand (happens to me a lot though –lol, so don’t think it’s you - lol).
Do you mean you want to insert a 1” schedule 40 steel pipe into a drill bit, and so you are threading the inside of a pipe which already has external threads and which is connected to that drill bit, so you can then screw in the 1” schedule 40 pipe– like in the picture?
I think normally instead you would use a female coupling and screw the end of the pipe in the picture into the female coupling, and then screw your pipe into the other end of the coupling.
I think the OP's picture was showing that he got a 1/2" or so tap when he should have gotten a 1" tap. No way that pipe is fitting into the hole threaded with that tap!
A 1x11.5 NPT tap has a diameter of approximately 1 inch at the tapping end. If not, they sent you the wrong size tap. Is that the water well drill bit in the photos? If yes, what is the diameter and depth of the center hole?
[color=#141414]I want to install a utility sink in my basement. The problem is that the main sewer line is on the other side of the house and there is no way to run a pipe from where I want the sink to the main sewer line easily and without running through a finished portion of the basement. There is however an auxiliary vent pipe right next to where I want the utility sink (see pic). This vent pipe vents fixtures in the second level of my house and directly vents through the roof. Here's my question. Is it okay and to code if I drained the utility sink directly into the auxiliary vent? Is this considered wet venting? Would you expect there to be any problems with this set up? Any insight would be greatly appreciated here. [/color]
[img]https://cimg4.ibsrv.net/gimg/www.doityourselft.com-vbulletin/711x584/29a9b827_48ea_470f_929a_cb143ef53328_93e7a3205ecfbedc1667f9707d15a8b2192801b8.jpeg[/img]
[color=#141414]Thanks![/color]
Hey all,
I have 1 more question... so I m trying to add RO system on top of my 1-stage water filter for drinking and i find it hard to get all the parts/fittings/etc that I want since I dont know what they call or the size. They will be located in the basement and the kitchen will be right above it. So here is my current situation
[img]https://cimg3.ibsrv.net/gimg/www.doityourselft.com-vbulletin/391x458/1_stage_e3b8011ddc338de6c16219d47b7eb2313f69d4df.png[/img]
and this is what i want to achieve... I have purchased the RO system from amazon since Nov ([url]https://www.amazon.ca/gp/product/B005LKKMYS/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1[/url])
[img]https://cimg4.ibsrv.net/gimg/www.doityourselft.com-vbulletin/1083x1018/paln_7ad29ae6a13b6c9abca2ccdbce90d25c855e94b8.png[/img]
Now.. i m not sure if I should use the existing 1-stage on top of the RO system since I thought I wouldnt have to change the RO system's filters that often if I replace that 1-stage water filter every couple of months since they are inexpensive. That open line meaning shut-off valve actually, I dont know the standard for plumbing diagram (sorry). And i was thinking that i would 1 shut-valves between the 1-stage and the RO. 1 more shut-off valve between the 1-stage and the line that goes to the faucet, or is there a 3-way shut off valve that does that?
Thank you guys so muchh!
01-27-21, 09:54 AM
