Altara services

ROTARY SCREW COMPRESSION

Compression Solutions for Sour Gas Recovery and Reinjection

request a quote

Altara’s compression line includes rotary screw packages designed to handle sour gas safely and efficiently.
Every unit is sour-rated, VFD-controlled, and built for remote operation.

Specs & Range

  • 100 HP – 500 HP Units
  • Pressures up to 250 psig
  • Sour service materials and seal packages
  • Integrated automation with remote monitoring

Applications

  • Tank vapor recovery
  • Sour-gas removal from SRTs (Sulfur Recovery Towers)
Download PDF
Industrial equipment with pipes, valves, and a motor inside a warehouse, labeled with the Altara logo.
HP Group Typical Driver Type Approx kVA Approx Full-Load Amps Design Suction Range (psig) Design Discharge Range (psig) Expected Capacity (MMSCFD) H₂S Capability Notes
100 HP Electric ~165–170 kVA ~200 A 0–5 100–200 0.20–0.60 Yes Bread-and-butter low-rate units
200 HP Electric ~333 kVA ~400 A 0–15 200–350 0.60–1.20 Yes High-flash crude / high vapor
300 HP Electric ~500 kVA ~600 A 0–20 250–500 1.00–1.80 Yes VRU + small booster service
400 HP Electric ~665–670 kVA ~800 A 0–25 200–400 1.00–2.40 Yes Multi-pad VRU header service
500 HP Electric ~830–835 kVA ~1000 A 0–35 300–700 2.00–4.00 Yes VRU + transmission gas capability

50 HP – Micro VRU

Driver: Electric

Approx kVA: ~80–85 kVA

Full-Load Amps: ~100 A

Suction Range: 0–3 psig

Discharge Range: 50–120 psig

Expected Capacity: 0.05–0.20 MMSCFD

H₂S Capability: Yes (limited)

Notes: Small well-pad vapor-only

100 HP – Small VRU

Driver: Electric

Approx kVA: ~165–170 kVA

Full-Load Amps: ~200 A

Suction Range: 0–5 psig

Discharge Range: 100–200 psig

Expected Capacity: 0.20–0.60 MMSCFD

H₂S Capability: Yes (some)

Notes: Bread-and-butter low-rate units

150 HP – Standard VRU

Driver: Electric

Approx kVA: ~250 kVA

Full-Load Amps: ~300 A

Suction Range: 0–10 psig

Discharge Range: 150–250 psig

Expected Capacity: 0.40–1.00 MMSCFD

H₂S Capability: Yes

Notes: Strong mid-rate sour VRU

200 HP – High-Cap VRU

Driver: Electric

Approx kVA: ~333 kVA

Full-Load Amps: ~400 A

Suction Range: 0–15 psig

Discharge Range: 200–350 psig

Expected Capacity: 0.60–1.20 MMSCFD

H₂S Capability: Yes

Notes: High-flash crude / high vapor

300 HP – Hybrid VRU / Booster

Driver: Electric

Approx kVA: ~500 kVA

Full-Load Amps: ~600 A

Suction Range: 0–20 psig

Discharge Range: 250–500 psig

Expected Capacity: 1.00–1.80 MMSCFD

H₂S Capability: Yes

Notes: VRU + small booster service

400 HP – Large VRU

Driver: Electric

Approx kVA: ~665–670 kVA

Full-Load Amps: ~800 A

Suction Range: 0–25 psig

Discharge Range: 200–400 psig

Expected Capacity: 1.00–2.40 MMSCFD

H₂S Capability: Yes

Notes: Multi-pad VRU header service

500 HP – Large VRU / High-Pressure Gas

Driver: Electric

Approx kVA: ~830–835 kVA

Full-Load Amps: ~1000 A

Suction Range: 0–35 psig

Discharge Range: 300–700 psig

Expected Capacity: 2.00–4.00 MMSCFD

H₂S Capability: Yes

Notes: VRU + transmission gas capability

Our Core Offerings

  • VIDARR Oil Towers

    VIDARR — The Mechanical Way to Sweeten Oil

    Learn More
  • THOR Water Towers

    THOR — High-Rate Sour Water Treatment Towers

    Learn More
  • VRU & Gas Lift Systems

    Compression Solutions for Sour Gas Recovery and Reinjection

    Learn More
  • Zephyrus Cyclonic

    ZEPHYRUS — Pre-Separation, Re-Engineered

    Learn More
  • LIDAR Mapping

    LiDAR Mapping & Methane Detection for Compliance and Safet

    Learn More
  • Consulting

    From Process Design to Full Facility Modeling

    Learn More
Line drawing of industrial equipment with pipes and tanks, set against a faint factory background.