Anybody knows if there is a rotary barrel hand pump with a NPT thread, weather 1" or 1 1/4"? I've already gone thru 2 that came with a thread that only fits the suction pipe that they came with, but not my NPT nipple that sits in my small bung (Dana Linscott's design).

Try this -- only 1/2", but cheap...
http://www.surpluscenter.com/item.asp?UID=2008061716035...item=2-1330&catname=

Cheers, John

Yes there is, my barrel pump has 1 NPT inlet and 3/4 NPT outlet.
http://www.monarchindustries.com/v4/pump_pages/v110.htm

Monarch model V-110
Rotary Hand Pump

The V-110 Rotary, and the L-30A Diaphragm pump are hand operated transfer pumps designed for use in 45 gallon drums with a 2" bung adaptor.
The V-110 has non-sparking brass vanes to safely pump a variety of petroleum based fluids.
Pump, Cap. 1 U.S. gal. per 10 rev.,
bronze fitted, furnished with handle, discharge spout ¾" NPT male thread, 40" telescopic suction pipe and bung adapter threaded for 2" steel drum openings.
Comes with ¾" x 8 ft neoprene hose with bent spout, all in one carton.

The harbor freight cheapies are 1" in and 3/4" out.

My Harbor Freight cheapy is some goofball proprietary crappola made-in-Chinola fitting on the input side. Because no one can match it, I've never even bothered looking at the output side.

Cheers, John

The variety in Johns pic is 1" in and 3/4" out, I plumb em with NPT barbs all the time.

Thank ya'll for the info!
From the responses, and by looking up different rotary pumps on the web, I can still not tell whether or not the inlet thread is a standard National Pipe Thread (NPT), or not. The Harbor Freight for sale on their site now has a 1 1/4 inlet, but, again, they do not specify the thread type.
Can anybody help with that?

I would think you could cut off the section with proprietary threads and then tap the cut end to NPT spec, making a nipple.