Windlass WESHU1003BW FIG 100 3" Buttweld 1000 PSI Hammer Union

The Windlass WESHU1003BW is a new FIG 100 hammer union in the buttweld (BW) end connection style, rated at 1,000 PSI Cold Working Pressure (CWP) and designed for Schedule 40 pipe. The part number decodes as follows: WE = Windlass brand, SHU = hammer union, 100 = Figure 100 pressure class (1,000 PSI CWP), 3 inch pipe size (DN 25), BW = buttweld end connection. FIG 100 hammer unions conform to industry-standard Figure 100 geometry, featuring a three-lug wing nut body (visible in photos, cast iron/ductile iron construction with yellow-painted seating surfaces) and a threaded wing nut that draws two pipe sections together via the hammer lugs — designed to be made up and broken out quickly using a hammer. The buttweld end connection means both the sub and nipple ends are prepared for butt welding directly to Schedule 40 pipe. Typical applications include oilfield flowlines, production manifolds, frac water transfer, and general industrial piping systems where quick-disconnect service at moderate pressure is required. The Windlass brand marking and "1000 CWP" rating are clearly cast into the wing nut face as confirmed in the product photos. Product Specifications Brand Windlass Material Ductile iron / cast iron Type Buttweld (BW) MPN WESHU1003BW Figure FIG 100 Cold Working Pressure (CWP) 1000 PSI Nominal Pipe Size 1 in (DN 25) Compatible Pipe Schedule Schedule 40 Wing Nut Style 3-lug (tri-lug) Finish Black body, yellow-painted seating surfaces Standard API / Industry FIG 100 interchangeable Part Number (MPN) WESHU1003BW End Connection Type Buttweld (BW) Body Material Ductile iron / cast iron