Oil rotary union HVH-3 series

for air6-passagefor heavy-duty applications

Description
DSTI 6-passage HVH Series rotary unions provide six independent fluid channels with #8 or #16 SAE-ORB connections and a 0.50" [12.7 mm] open through bore for electrical slip ring integration. Constructed for heavy-equipment and outdoor use, the HVH Series features an alloy steel shaft, ductile iron housing and black oxide coating for improved corrosion resistance. These rotary unions are suitable for harsh environments including forestry, mining and construction, and accept vacuum and bidirectional pressures up to 5,000 PSI [345 BAR].

Pressure Options (series mapping)
200 PSI [15 BAR] : SPS, LT, SE, GP, GPS, SCS, HVH, HPS
600 PSI [40 BAR] : SPS, LT, SE, GP, GPS, HVH, HPS
5,000 PSI [345 BAR] : SE, GP, GPS, HVH, HPS
7,500 PSI [515 BAR] : SE, GP, GPS, HPS
20,000 PSI [1,375 BAR] : HPS
Other : Custom

Maximum Speed (examples)
HVH: 20 RPM
Other series (examples): 20 RPM, 50 RPM, 75 RPM, 300 RPM, 500 RPM, Other: Custom

Connection Types (examples)
HVH: SAE-ORB
Other available connection types across series: ASME-BPE, BSPP, BSPT, NPT, Medium Pressure, Custom

Suitable Media*

• Air / Gas
• Oil / Hydraulic (petroleum-based only)

Notes
Designed for heavy equipment and outdoor-use applications. Heavy-duty construction with alloy steel shaft, ductile iron housing and black oxide coating for improved corrosion protection.

Configurations (examples)
Part #: HVH-304061 [HVHM-304061] — Connection: #8 SAE-ORB — Passage Size: 0.440" [11.176 mm] — Diameter: 5.690" [144.526 mm] — Length: 8.600" [218.44 mm] — Through Bore: 0.500" [12.7 mm] — Min. Torque*: 22 ft-lbs [29.83 Nm]
Part #: HVH-306061 [HVHM-306061] — Connection: #16 SAE-ORB — Passage Size: 0.880" [22.352 mm] — Diameter: 7.940" [201.676 mm] — Length: 13.390" [340.107 mm] — Through Bore: 0.500" [12.7 mm] — Min. Torque*: 54 ft-lbs [73.21 Nm]

Downloads (available)
HVH Series Catalog (PDF)
HVH Series Installation & Mounting (PDF)

Technical specifications

• Brand: DSTI
• Commercial name: HVH Series
• Type: 6-passage fluid rotary unions / joints
• Maximum pressure (HVH): 5,000 PSI [345 BAR]
• Maximum speed (HVH): 20 RPM
• Maximum vacuum: 30 HG
• Temperature range: 0° F to 220° F [-18° C to 105° C]
• Connection type (HVH): SAE-ORB (#8 and #16 available)
• Through bore (all HVH models): 0.50" [12.7 mm]
• Housing: Ductile iron, black oxide coating
• Shaft: Alloy steel, black oxide coating
• Suitable media: Air/Gas; Oil/Hydraulic (petroleum-based only)
• Typical applications / industries: Heavy equipment, forestry, mining, construction
• Example part HVH-304061 — Passage size: 0.440" [11.176 mm]; min. torque 22 ft-lbs [29.83 Nm]
• Example part HVH-306061 — Passage size: 0.880" [22.352 mm]; min. torque 54 ft-lbs [73.21 Nm]
• Options: Custom modifications and electrical slip ring integration (models accept standard electrical slip rings via the 0.50" through bore)
• Important: Oil/Hydraulic media must be petroleum-based