- Formerly Danzco -

Weld-on Ports & Fittings

We machine round, square, and hex steel weld on ports and fittings for hydraulic system plumbing from C1018 or 8620 bar for best in class weldability. For off highway equipment plumbing with flows from 10 to 70 GPM with working pressures to 6,000 PSI we recommend using 1/2” to 1” Seamless Schedule 80 pipe.

Hydraulic cylinder porting components include:

End of tube ports include:

Weld procedures

To insure a good weld quality grind clean the weld joint area. For pipes or tubes a weld chamfer may need prepared. Check for fit and limit gaps to reduce distortion and slag contamination. Tack the parts in place and preheat to 100°F / 38°C minimum to 200°F / 93°C. Weld with an E70 or E80 filler material. Small multi-pass welds will reduce distortion on cylinder barrel welds. Clean slag and spatter from both sides of the weld area and wash before putting into service. If you have a weld leak it may require using 6010 or 6011 stick welding to seal off the oil.

Weld on Fittings

JIC Weld On Fitting

Male JIC with Straight Through Port

Male JIC with straight through port line drawing
Part No. Style A B C - Dia. D - thread E - Dia. F
DPWJ06 #6 JIC 1.2" 1.08" 0.42" 9/16 - 18 0.30" 3/4"
DPWJ08 #8 JIC 1.41" 1.30" 0.54" 3/4 - 16 0.39" 7/8"
DPWJ10 #10 JIC 1.50" 1.45" 0.54" 7/8 - 14 0.47" 1"
DPWJ12 #12 JIC 1.81" 1.69" 0.74" 1-1/16 - 12 0.59" 1-1/4"
DPWJ16 #16 JIC 2.03" 1.78" 0.91" 1-5/16 - 12 0.83" 1-1/2"
DPWJ20 #20 JIC 2.09" 1.84" 1.28" 1-5/8 - 12 1.09" 1-7/8
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Weld on Threaded O-Ring Ports

Round Weld On O-Ring Port

Round Female SAE O-Ring with Straight Through PortRound Female SAE O-Ring with straight through port line drawing

Part No. Description A - Dia. B C - Dia. D - Thread
DPWT04 #4 SAE 3/4" 0.6" 0.391 7/16 - 20
DPWT06 #6 SAE 1" 0.7" 0.516 9/16 - 18
DPWT08 #8 SAE 1-/4" 0.85" 0.688 3/4 - 16
DPWT10 #10 SAE 1-3/8" 0.75" 0.8 7/8 - 14
DPWT12 #12 SAE 1-5/8" 1.05" 0.974 1-1/16 - 12
DPWT16 #16 SAE 1-15/16" 1.125" 1.224 1-5/16 - 12
DPWT20 #20 SAE 2-3/8" 1.125" 1.538 1-5/8 - 12
DPWT24 #24 SAE 2-5/8" 1.125" 1.788 1-7/8 - 12
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"G" Style BSPP Type Weld On O-Ring Port

Round BSPP with Straight Through Port

Part No. Description
DPWT37 #4 "G" Style 1/4" BSPP Type O-Ring Port
DPWT38 #6 "G" Style 3/8" BSPP Type O-Ring Port
DPWT39 #8 "G" Style 1/2" BSPP Type O-Ring Port
DPWT40 #12 "G" Style 3/4" BSPP Type O-Ring Port
DPWT41 #16 "G" Style 1" BSPP Type O-Ring Port
DPWT42 #20 "G" Style 1-1/4" BSPP Type O-Ring Port
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"G" Style BSPP Weld on Port for Seal Washers
Part No. Description
DPWT43 #20 "G" Style BSPP for Seal Washers
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Straight Weld on Port Blocks

Straight Fit Weld On Port Block

Square Female SAE O-Ring with Straight Through PortSquare female SAE O-Ring with straight through port line drawing

Part No. Description A B C - Dia. D - Thread
DPWS04 #4 SAE 2" 2.305" 5-3/4" 7/16 - 20
DPWS06 #6 SAE 1" 1.104" 3" 9/16 - 18
DPWS08 #8 SAE 1-1/4" 1.375" 3-1/2" 3/4 - 16
DPWS10 #10 SAE 1-3/4" 1.090" 4-1/2" 7/8 - 14
DPWS12 #12 SAE 1-3/4" 2.011" 5-3/4" 1-1/16 - 12
DPWS16 #16 SAE 2" 2.305" 5-3/4" 1-5/16 - 12
DPWS20 #20 SAE 2-1/2" 2.411" 5-3/4" 1-5/8 - 12
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Butt Port Fit Weld On Port Block

Square Female SAE O-Ring with Straight Through Port with Butt Port Fit

Part No. Description A B D - Thread
DPWS24 #4 SAE 7/8" 1-1/2" 7/16 - 20
DPWS26 #6 SAE 2" 3" 9/16 - 18
DPWS28 #8 SAE 2" 3" 3/4 - 16
DPWS30 #10 SAE 2" 3" 7/8 - 14
DPWS32 #12 SAE 2" 3" 1-1/16 - 12
DPWS36 #16 SAE 2" 3" 1-5/16 - 12
DPWS40 #20 SAE 2-1/2" 3" 1-5/8 - 12
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90° Weld On O-Ring Ports

90° Side Ported Weld On O-Ring Ports

Square Female SAE O-Ring Port 90° to Barrel with Passage Parallel to BarrelSquare female SAE O-Ring port 90° to barrel with passage parallel to barrel line drawing

(A and B are equal)

Part No. Description A C D E F G - Thread
DPW904 #4 SAE 2" 3" 3/4" 1" 1" 7/16 - 20
DPW906 #6 SAE 1" 1-1/2" 3/8" 1/2" .58" 9/16 - 18
DPW908 #8 SAE 1-1/4" 2" .54" 5/8" .81" 3/4 - 16
DPW910 #10 SAE 1-3/4" 3" 3/4" 7/8" 1" 7/8 - 14
DPW912 #12 SAE 1-3/4" 2" 3/4" 7/8" 1" 1-1/16 - 12
DPW916 #16 SAE 2" 3" 7/8" 1" 1.2" 1-5/16 - 12
DPW920 #20 SAE 2-1/2" 3" 3/4" 1-1/4" 1" 1-5/8 - 12
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90° Flat Top of Barrel Weld On O-Ring Ports

Square Female SAE O-Ring Port 90° to Barrel with Passage Parallel to Barrel - Flat to Top of Barellel

(A and B are equal)

Part No. Description A C D E F G - Thread
DPW924 #4 SAE 2" 3" 3/4" 1" 1" 7/16 - 20
DPW926 #6 SAE 2" 3" 3/4" 1" 1" 9/16 - 18
DPW928 #8 SAE 2" 3" 3/4" 1" 1" 3/4 - 16
DPW930 #10 SAE 2" 3" 3/4" 1" 1" 7/8 - 14
DPW933 #12 SAE 2" 3" 3/4" 1" 1" 1-1/16 - 12
DPW936 #16 SAE 2" 3" 3/4" 1" 1" 1-5/16 - 12
DPW940 #20 SAE 2-1/2" 3" 3/4" 1-1/4" 1" 1-5/8 - 12
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90° Weld On Tube Port Offset Flat Top

(A and B are equal)

Part No. Description A C D E F G - Thread
DPW932 #12 SAE 2" 2-3/4" 3/4" 3/4" 1.1" 1-1/16 - 12
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Square female SAE O-Ring port parallel to barrel with passage 90° to barrelDPW946Square female SAE O-Ring port parallel to barrel with passage 90° to barrel line drawing

(A and B are equal)

Part No. Descrip. A C D E F H - Thread
DPW946 #6 SAE 1" 1-1/2" 1/2" 1/2" .65" 9/16 - 18
DPW941 #8 SAE 1-1/4" 1-7/8" 5/8" 5/8" .85" 3/4 - 16
DPW942 #10 SAE 1-1/4" 1-7/8" 5/8" 5/8" 3/4" 7/8 - 14
DPW952 #12 SAE 1-3/4" 2" 7/8" 3/4" 1-1/8" 1-1/16 - 12
DPW956 #16 SAE 2" 2-1/4" 1" .85" 1-1/4" 1-5/16 - 12
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Female O-Ring to Tube & Pipe Thread Weld on Ports

Part No. Description
DPWP08 1/2" NPT Female
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Straight Female O-Ring to Tube Weld On Port

Female SAE O-Ring straight to OD of pipe, Round Round femlae SAE o-Ring straight to OD of pipe line drawing

Part No. Descrip. Tube OD A - Dia. B C - Dia. D E - Thread
DPWP14 #8 SAE 3/4" 1-3/8" 1-1/4" 3/4" 1/2" 3/4 - 16
DPWP21 #12 SAE 7/8" 1-5/8" 1-1/2" 7/8" 5/8" 1-1/16 - 12
DPWP22 #12 SAE 1" 1-5/8" 1-1/2" 1" 5/8" 1-1/16 - 12
DPWP23 #12 SAE 3/4" 1-5/8" 1.532" 3/4" 5/8" 1-1/16 - 12
DPWP31 #16 SAE 1.385" 2" 1-3/4" 1.385" 3/4" 1-5/16 - 12
DPWP32 #16 SAE 1-1/16" 2" 1.907" 1-1/16" 3/4" 1-5/16 - 12
DPWP33 #16 SAE 1-1/4" 2" 1-3/4" 1-1/4" 3/4" 1-5/16 - 12
DPWP34 #16 SAE 1" 2" 1-3/4" 1" 3/4" 1-5/16 - 12
DPWP40 #20 SAE 1-3/4" 2-3/8" 1-7/8" 1-3/4" 7/8" 1-5/8 - 12
DPWP41 #20 SAE 1-1/4" 2-3/8" 1-7/8" 1-1/4" 7/8" 1-5/8 - 12
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Female SAE O-Ring with 90° passage for pipe ODRound female SAE o-ring straight to OD of pipe line drawing

Part No. Description A - Dia. B C - Dia. D - Dia. E F - Thread
DPWP07 #6 SAE for 3/8" Pipe Weld Fitting 1" 1.025" 11/16" .39" .45" 9/16 - 18
DPWP35 #16 SAE for 1-1/16" OD Tube 2" 2-1/2" 1.075" 7/8" 7/8" 1-5/16 - 12
DPWP36 #16 SAE for 1-1/4" OD Tube 2" 2-1/2" 1.260" 1" 1" 1-5/16 - 12
DPWP37 #16 SAE for 1-1/4" OD Tube x #6 Guage Port 2-1/2" 2-1/8" #6 O-Ring 1-1/8" 1-5/16 - 12
DPWP43 #20 SAE for 1-3/4" OD Tube x #6 Guage Port 2-3/4" 2-1/4" #6 O-Ring 1-1/8" 1-5/8 - 12
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U-Flow Weld on Ports

U-Flow Weld On PortU-Flow Rectangular Port Line Drawing

U-Flow Rectangular Port

Part No. Descrip. A B C D E F G - Dia. H - Dia.
DPWU08 #8 SAE 1-1/2" 2-5/8" 1-1/4" 5/8" 1" 5/8" 1/2" 1/2"
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U-Flow Rectangular Port

Part No. A B C D E F G - Dia. H - Dia. I J
DPWF57 1-1/2" 2-3/4" 4.62" 1-3/8" 2.062" 1.031" 7/8" 1-3/8" 7/8" .4"
#16 4 Bolt Flange, Flat, M10 x 1.5 U-Flow Code 61  
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Flat Faced O-Ring & Flanged Ports

Male Flat Faced O-Ring to Schedule 80 Pipe Weld On Port

Male Flat Face O-Ring to ID of schedule 80 pipe with wrench hex

DPWF line drawings
Part No. Style A B C - Dia. D - Thread E - Dia. F
DPWF04 #4 MFOR to 1/4" Pipe       9/16 - 18    
DPWF06 #6 MFOR to 3/8" Pipe       11/16 - 16    
DPWF08 #8 MFOR to 1/2" Pipe 1.27" 1.12" 0.535" 13/16 - 16 0.37" 7/8"
DPWF10 #10 MFOR to 5/8" Pipe       1 - 14    
DPWF12 #12 MFOR to 3/4" Pipe 1.7" 1.55" 0.736" 1-3/16 - 12 0.61" 1-1/4"
DPWF16 #16 MFOR to 1" Pipe 1.6" 1.45" 0.94" 1-7/16 - 12 0.81" 1-1/2"
DPWF20 #20 MFOR to 1-1/4" Pipe       1-11/16 - 12    
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Flanged Weld On Port
Part No. Description
DPWF25 #16 Code 61 x 1" Pipe Female Straight
DPWF26 #16 Code 61 Through Flow with #16 ORB Side Port
DPWF27 #16 Code 62 Through Flow with #16 ORB Side Port
DPWF30 #16 Code 61 for Cylinders with Tapped Holes
DPWF41 #16 Code 61 4 Bolt Flange, Flat, M10x1.5
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Pipe Weld On Coupler

Pipe Weld On Coupler
Part No. Description
DPWC04 1/4" Schedule 80 Pipe Weld Coupler
DPWC06 3/8" Schedule 80 Pipe Weld Coupler
DPWC08 1/2" Schedule 80 Pipe Weld Coupler
DPWC10 5/8" Schedule 80 Pipe Weld Coupler
DPWC12 3/4" Schedule 80 Pipe Weld Coupler
DPWC16 1" Schedule 80 Pipe Weld Coupler
DPWC20 1-1/4" Schedule 80 Pipe Weld Coupler
DPWC24 1-1/2" Schedule 80 Pipe Weld Coupler
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