GP Series Rotary Unions & Joints

DSTI

7500 PSI(515 BAR), 500 RPM, 30 HG, 0° F to 220° F (-18° C to 105° C)

DSTI GP Series Rotary Unions & Joints

The DSTI GP Series rotary unions are available in 2, 3, 4, 6, 8, 10 and 12 passage models. These general-purpose, multiple-passage rotary unions feature specialized sealing technology suitable for vacuum and bidirectional pressures and independent flow passages capable of transferring different media types simultaneously.

PART CONNECTION PASSAGE SIZE DIAMETER LENGTH THROUGH BORE MIN. TORQUE
GP-120[GPM-120] 1/8″-27 NPT[G1/8″-28 BSPP] 0.156″[3.962 mm] 2.437″[61.9 mm] 3.347″[85.014 mm] None 0.5 ft-lbs[0.68 Nm]
GP-121[GPM-121] 1/8″-27 NPT[G1/8″-28 BSPP] 0.156″[3.962 mm] 2.937″[74.6 mm] 3.637″[92.38 mm] 0.500″[12.7 mm] 1.9 ft-lbs[2.58 Nm]
GP-220[GPM-220] 1/4″-18 NPT[G1/4″-19 BSPP] 0.250″[6.35 mm] 2.937″[74.6 mm] 4.374″[111.1 mm] None 3.9 ft-lbs[5.29 Nm]
GP-221[GPM-221] 1/4″-18 NPT[G1/4″-19 BSPP] 0.250″[6.35 mm] 3.750″[95.25 mm] 4.773″[121.234 mm] 0.750″[19.05 mm] 5.7 ft-lbs[7.73 Nm]
GP-320[GPM-320] 3/8″-18 NPT[G3/8″-19 BSPP] 0.375″[9.525 mm] 3.187″[80.95 mm] 4.706″[119.533 mm] None 4 ft-lbs[5.42 Nm]
GP-321[GPM-321] 3/8″-18 NPT[G3/8″-19 BSPP] 0.375″[9.525 mm] 4.187″[106.35 mm] 5.312″[134.925 mm] 0.750″[19.05 mm] 7.1 ft-lbs[9.63 Nm]
GP-420[GPM-420] 1/2″-14 NPT[G1/2″-14 BSPP] 0.500″[12.7 mm] 3.875″[98.425 mm] 5.392″[136.957 mm] None 5.7 ft-lbs[7.73 Nm]
GP-421[GPM-421] 1/2″-14 NPT[G1/2″-14 BSPP] 0.500″[12.7 mm] 4.937″[125.4 mm] 6.220″[157.988 mm] 0.750″[19.05 mm] 12.2 ft-lbs[16.54 Nm]
GP-621[GPM-621] 1″-11.5 NPT[G1″-11 BSPP] 1.000″[25.4 mm] 7.187″[182.55 mm] 8.600″[218.44 mm] 1.000″[25.4 mm] 24.4 ft-lbs[33.08 Nm]
GP-130[GPM-130] 1/8″-27 NPT[G1/8″-28 BSPP] 0.156″[3.962 mm] 2.687″[68.25 mm] 4.147″[105.334 mm] None 1.5 ft-lbs[2.03 Nm]
GP-131[GPM-131] 1/8″-27 NPT[G1/8″-28 BSPP] 0.156″[3.962 mm] 2.937″[74.6 mm] 4.186″[106.325 mm] 0.500″[12.7 mm] 2.6 ft-lbs[3.53 Nm]
GP-230[GPM-230] 1/4″-18 NPT[G1/4″-19 BSPP] 0.250″[6.35 mm] 3.187″[80.95 mm] 5.290″[134.366 mm] None 5.3 ft-lbs[7.19 Nm]
GP-231[GPM-231] 1/4″-18 NPT[G1/4″-19 BSPP] 0.250″[6.35 mm] 3.750″[95.25 mm] 5.601″[142.266 mm] 0.750″[19.05 mm] 7.6 ft-lbs[10.3 Nm]
GP-330[GPM-330] 3/8″-18 NPT[G3/8″-19 BSPP] 0.375″[9.525 mm] 3.875″[98.425 mm] 6.030″[153.162 mm] None 7.6 ft-lbs[10.3 Nm]
GP-331[GPM-331] 3/8″-18 NPT[G3/8″-19 BSPP] 0.375″[9.525 mm] 4.187″[106.35 mm] 6.342″[161.087 mm] 0.750″[19.05 mm] 9.5 ft-lbs[12.88 Nm]
GP-430[GPM-430] 1/2″-14 NPT[G1/2″-14 BSPP] 0.500″[12.7 mm] 4.250″[107.95 mm] 7.061″[179.35 mm] None 9.5 ft-lbs[12.88 Nm]
GP-431[GPM-431] 1/2″-14 NPT[G1/2″-14 BSPP] 0.500″[12.7 mm] 4.937″[125.4 mm] 7.406″[188.113 mm] 0.750″[19.05 mm] 16.2 ft-lbs[21.96 Nm]
GP-530[GPM-530] 3/4″-14 NPT[G3/4″-14 BSPP] 0.750″[19.05 mm] 5.250″[133.35 mm] 8.280″[210.312 mm] None 16.2 ft-lbs[21.96 Nm]
GP-630[GPM-630] 1″-11.5 NPT[G1″-11 BSPP] 1.000″[25.4 mm] 6.937″[176.2 mm] 10.570″[268.479 mm] None 24.7 ft-lbs[33.49 Nm]
GP-140[GPM-140] 1/8″-27 NPT[G1/8″-28 BSPP] 0.156″[3.962 mm] 2.687″[68.25 mm] 4.696″[119.279 mm] None 1.9 ft-lbs[2.58 Nm]
GP-141[GPM-141] 1/8″-27 NPT[G1/8″-28 BSPP] 0.156″[3.962 mm] 2.937″[74.6 mm] 4.735″[120.269 mm] 0.500″[12.7 mm] 3.2 ft-lbs[4.34 Nm]
GP-240[GPM-240] 1/4″-18 NPT[G1/4″-19 BSPP] 0.250″[6.35 mm] 3.187″[80.95 mm] 6.118″[155.398 mm] None 6.6 ft-lbs[8.95 Nm]
GP-241[GPM-241] 1/4″-18 NPT[G1/4″-19 BSPP] 0.250″[6.35 mm] 3.750″[95.25 mm] 6.327″[160.706 mm] 0.750″[19.05 mm] 9.5 ft-lbs[12.88 Nm]
GP-340[GPM-340] 3/8″-18 NPT[G3/8″-19 BSPP] 0.375″[9.525 mm] 3.875″[98.425 mm] 6.980″[177.292 mm] None 9.5 ft-lbs[12.88 Nm]
GP-341[GPM-341] 3/8″-18 NPT[G3/8″-19 BSPP] 0.375″[9.525 mm] 4.187″[106.35 mm] 7.372″[187.249 mm] 0.750″[19.05 mm] 11.9 ft-lbs[16.13 Nm]
GP-440[GPM-440] 1/2″-14 NPT[G1/2″-14 BSPP] 0.500″[12.7 mm] 4.250″[107.95 mm] 8.247″[209.474 mm] None 11.9 ft-lbs[16.13 Nm]
GP-441[GPM-441] 1/2″-14 NPT[G1/2″-14 BSPP] 0.500″[12.7 mm] 4.937″[125.4 mm] 8.592″[218.237 mm] 0.750″[19.05 mm] 20.3 ft-lbs[27.52 Nm]
GP-540[GPM-540] 3/4″-14 NPT[G3/4″-14 BSPP] 0.750″[19.05 mm] 5.250″[133.35 mm] 9.730″[247.142 mm] None 20.3 ft-lbs[27.52 Nm]
GP-641[GPM-641] 1″-11.5 NPT[G1″-11 BSPP] 1.000″[25.4 mm] 7.187″[182.55 mm] 12.190″[309.627 mm] 1.000″[25.4 mm] 40.7 ft-lbs[55.18 Nm]
GP-161[GPM-161] 1/8″-27 NPT[G1/8″-28 BSPP] 0.156″[3.962 mm] 3.187″[80.95 mm] 6.483″[164.669 mm] 0.500″[12.7 mm] 6 ft-lbs[8.13 Nm]
GP-261[GPM-261] 1/4″-18 NPT[G1/4″-19 BSPP] 0.250″[6.35 mm] 4.000″[101.6 mm] 8.175″[207.645 mm] 0.750″[19.05 mm] 9.8 ft-lbs[13.29 Nm]
GP-361[GPM-361] 3/8″-18 NPT[G3/8″-19 BSPP] 0.375″[9.525 mm] 4.250″[107.95 mm] 8.963″[227.661 mm] 0.750″[19.05 mm] 13.1 ft-lbs[17.76 Nm]
GP-460[GPM-460] 1/2″-14 NPT[G1/2″-14 BSPP] 0.500″[12.7 mm] 4.937″[125.4 mm] 10.000″[254.001 mm] None 22.3 ft-lbs[30.23 Nm]
GP-561[GPM-561] 3/4″-14 NPT[G3/4″-14 BSPP] 0.750″[19.05 mm] 6.437″[163.5 mm] 13.230″[336.043 mm] 1.000″[25.4 mm] 43.3 ft-lbs[58.71 Nm]
GP-180[GPM-180] 1/8″-27 NPT[G1/8″-28 BSPP] 0.156″[3.962 mm] 3.437″[87.3 mm] 7.488″[190.196 mm] None 10.4 ft-lbs[14.1 Nm]
GP-280[GPM-280] 1/4″-18 NPT[G1/4″-19 BSPP] 0.250″[6.35 mm] 4.250″[107.95 mm] 9.609″[244.069 mm] None 15.4 ft-lbs[20.88 Nm]
GP-380[GPM-380] 3/8″-18 NPT[G3/8″-19 BSPP] 0.375″[9.525 mm] 4.937″[125.4 mm] 10.000″[254.001 mm] None 26.4 ft-lbs[35.79 Nm]
GP-480[GPM-480] 1/2″-14 NPT[G1/2″-14 BSPP] 0.500″[12.7 mm] 5.625″[142.875 mm] 10.000″[254.001 mm] None 32.5 ft-lbs[44.06 Nm]
GP-201-10[GPM-201-10] 1/4″-18 NPT[G1/4″-19 BSPP] 0.250″[6.35 mm] 3.687″[93.65 mm] 10.000″[254.001 mm] 0.750″[19.05 mm] 14.7 ft-lbs[19.93 Nm]
GP-301-10[GPM-301-10] 3/8″-18 NPT[G3/8″-19 BSPP] 0.375″[9.525 mm] 3.937″[100 mm] 13.620″[345.949 mm] 0.750″[19.05 mm] 23.3 ft-lbs[31.59 Nm]
GP-201-12[GPM-201-12] 1/4″-18 NPT[G1/4″-19 BSPP] 0.250″[6.35 mm] 4.437″[112.7 mm] 13.380″[339.853 mm] 0.750″[19.05 mm] 19.2 ft-lbs[26.03 Nm]
GP-301-12[GPM-301-12] 3/8″-18 NPT[G3/8″-19 BSPP] 0.375″[9.525 mm] 4.937″[125.4 mm] 15.370″[390.399 mm] 0.750″[19.05 mm] 26.2 ft-lbs[35.52 Nm]

 

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DSTI GP Series Rotary Unions & Joints 

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GP Series Rotary Unions & Joints

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