Oil rotary union HPI series

for sludgehigh-pressurefor offshore applications

Overview
DSTI’s HPI (High Pressure Inline) swivel product line provides inline fluid swivels for moon pool drape hoses, managed pressure drilling (MPD) systems and direct acting tensioner (DAT) systems. The HPI range delivers standardized designs and field-proven sealing technology for critical offshore and drilling applications, trusted by OEMs, operators and contractors.

HPI Swivel Applications

• Choke & Kill hoses
• Booster hoses
• Hydraulic hoses
• Mud hoses
• Managed Pressure Drilling (MPD) hoses
• Direct Acting Tensioner (DAT) hoses

Configurations (selection of standard HPI models)
Moon Pool Swivels — table header: Hose Type | Part # | Bore Size | Pressure Rating | End Connection | End Connection Type | API 20E BOLTING
Choke / Kill | HPI-11540-FX1504 | 3-1/16" | 15 KSI [103.4 MPa] | Flange | API 6A, TYPE 6BX, 3-1/16" 15 KSI, BX154 | BSL 1
Choke / Kill | HPI-11540-HX1504 | 3-1/16" | 15 KSI [103.4 MPa] | Hub | API 16A, TYPE 16BX, 3-1/16" 15 KSI, BX154, NO. 6 CLAMP | BSL 1
Choke / Kill | HPI-11541-HX1504 | 3-1/16" | 15 KSI [103.4 MPa] | Hub | API 16A, TYPE 16BX, 3-1/16" 15 KSI, BX154, NO. 6 CLAMP | BSL 3
Choke / Kill | HPI-25540-FX1504 | 3-1/16" | 15 KSI [103.4 MPa] | Flange | API 6A, TYPE 6BX, 3-1/16" 15 KSI, BX154 | BSL 3
Choke / Kill | HPI-25540-HX1504 | 3-1/16" | 15 KSI [103.4 MPa] | Hub | API 16A, TYPE 16BX, 3-1/16" 15 KSI, BX154 | BSL 3
Hydraulic | HPI-09210-FX0502 | 2-1/16" | 5 KSI [34.5 MPa] | Flange | API 17D, TYPE 17SS, 2-1/16" 5 KSI, BX152 | BSL 1
Hydraulic | HPI-09210-HX0502 | 2-1/16" | 5 KSI [34.5 MPa] | Hub | API 16A, TYPE 16BX 2-1/16" 5 KSI, BX152, NO. 1 CLAMP | BSL 1
Hydraulic | HPI-11410-FX1004 | 3-1/16" | 10 KSI [68.9 MPa] | Flange | API 6A, TYPE 6BX 3-1/16" 10 KSI, BX154 | BSL 1
Hydraulic | HPI-11411-HX1003 | 2-9/16" | 10 KSI [68.9 MPa] | Hub | API 16A, TYPE 16BX 2-9/16" 10 KSI, BX153, NO. 4 CLAMP | BSL 1
Hydraulic | HPI-11412-HX1003 | 2-9/16" | 10 KSI [68.9 MPa] | Hub | API 16A, TYPE 16BX 2-9/16" 10 KSI, BX153, NO. 4 CLAMP | BSL 3
Hydraulic | HPI-11411-HX0503 | 2-9/16" | 5 KSI [34.5 MPa] | Hub | API 16A, TYPE 16BX 2-9/16" 5 KSI, BX153, NO. 2 CLAMP | BSL 1
Mud / Boost | HPI-13322-FX0505 | 3-1/8" | 5 KSI [34.5 MPa] | Flange | API 17D, TYPE 17SS 3-1/8" 5 KSI, BX154 | BSL 1
Mud / Boost | HPI-13322-HX0505 | 3-1/8" | 5 KSI [34.5 MPa] | Hub | API 16A, TYPE 16BX 3-1/8" 5 KSI, BX154, NO. 4 CLAMP | BSL 1
Mud / Boost | HPI-13320-FX1006 | 4-1/16" | 7.5 KSI [51.7 MPa] | Flange | API 6A, TYPE 6BX 4-1/16" 10 KSI, BX155 | BSL 1
Mud / Boost | HPI-13320-HX1006 | 4-1/16" | 7.5 KSI [51.7 MPa] | Hub | API 16A, TYPE 16BX 4-1/16" 10 KSI, BX155, NO. 6 CLAMP | BSL 1
Mud / Boost | HPI-13321-HX1006 | 4-1/16" | 7.5 KSI [51.7 MPa] | Hub | API 16A, TYPE 16BX 4-1/16" 10 KSI, BX155, NO. 6 CLAMP | BSL 3
Mud / Boost | HPI-13320-HX0506 | 4-1/16" | 5 KSI [34.5 MPa] | Hub | API 16A, TYPE 16BX 4-1/16" 5 KSI, BX155, NO. 5 CLAMP | BSL 1

Managed Pressure Drilling (MPD) Swivels — table header: Hose Type | Part # | Bore Size | Pressure Rating | End Connection | End Connection Type | API 20E BOLTING
MPD | HPI-0903-GR1123 | 2" | 5 KSI [34.5 MPa] | Hub | Grayloc 3GR23 | BSL 1
MPD | HPI-0913-GR1123 | 2" | 5 KSI [34.5 MPa] | Hub | Grayloc 3GR23 | BSL 3
MPD | HPI-0903-HX1002 | 2-1/16" | 5 KSI [34.5 MPa] | Hub | API 16A, TYPE 16BX 2-1/16" 10K, BX152, NO. 2 CLAMP | BSL 1
MPD | HPI-0903-HX0502 | 2-1/16" | 5 KSI [34.5 MPa] | Hub | API 16A, TYPE 16BX 2-1/16" 5 KSI, BX152, NO. 1 CLAMP | BSL 1
MPD | HPI-1503-GR1562 | 6" | 5 KSI [34.5 MPa] | Hub | Grayloc 6GR62 | BSL 1
MPD | HPI-1513-GR1562 | 6" | 5 KSI [34.5 MPa] | Hub | Grayloc 6GR62 | BSL 3
MPD | HPI-1503-HX0508 | 6" | 5 KSI [34.5 MPa] | Hub | API 16A, TYPE 16BX 7-1/16" 5K, BX156, NO. 8 CLAMP | BSL 1

Direct Acting Tensioner (DAT) Swivels — table header: Hose Type | Part # | Bore Size | Pressure Rating | End Connection | End Connection Type
DAT | HPI-16210-S01 | 8" | 5 KSI [34.5 MPa] | Flange | 8" ISO 6164 GS Hydro

Photos & Video
Product photos and a product video demonstrating HPI swivel assemblies, drape-hose interfaces and typical installation contexts are provided for reference.

Technical Specifications

• Working pressures: Up to 20,000+ PSI
• Bore sizes: Ranging from 2" to 8"+
• Certifications: Compliant with ABS & DNV GL
• Design standards: API 6A, API 16A/16C, API 17D where applicable
• Exclusive low-torque design at full working pressure
• Marine-grade plain bearings for consistent performance under operational loads
• Extended intervals between maintenance and rebuilds
• Internal locking mechanism to prevent shaft separation from housings
• Redundant sealing system for maximum uptime
• Preventative maintenance & rebuild manual provided
• Multiple standard end connections (Flange, Hub, Grayloc) and bolting levels (BSL 1, BSL 3)