• Arrow / NG VRS4 (4 throw, 4 Cylinder, 3 stage)

• 3” Stroke 20,000 lb. combined rod load

• 7.250” DA Cylinder MWP 420 psig X 2

• 5.0” DA Cylinder MWP 1100 psig

• 3.5” DA Cylinder MWP 1500 psig

• PSI 22L industrial engine rated 560 HP @ 1800 RPM

• Ratings- Elevation ~3000’ and 100 F Ambient

• V12 Cylinder Turbocharged 1338 Cubic Inches

• EICS Electronic engine control system

• Industrial grade exhaust silencer

• Electronic governor controlled

• Standard 24V starter w/ battery/alternator system

• Rich Burn

• Engine-driven radiator

• Air-cooled, forced draft, electric fan powered via alternator

• Programmable individual interstage temperature control

• Finned Tube type high efficiency

• Designed for 105F Ambient & <20°F approach

• B31.3 process gas sections

• 1st Stage Intercooler section rated @ 1440 psig @ 350 F

• 2nd Stage Intercooler section rated @ 1440 psig @ 350 F

• After cooler section rated @ 1440 psig @ 350 F

• Suction: Vertical 425 psig MAWP @ 150 oF

• 1st Interstage: OD 425 psig MAWP @ 150ºF

• 2nd Interstage: OD 900 psig MAWP @ 150ºF

• Designed to ASME Section VIII, Division I Code Stamp

with National Board Registration.

• Hydro tested to 1.3 times MAWP

• Automatic liquid level control system

• High level shutdown

• Manual drain valve

• Process safety valves (PSV) sized for max flow at design

pressures.

• PSV relief piping to atmosphere above head height

• Package Inlet PSV connection provided. PSV by others

• 1st Interstage PSV set @ 425 psig

• 2nd Interstage PSV set @ 900 psig

• 3rd Discharge PSV set @ 1440 psig

• 7’8” X 24’ Structural steel skid, partially concrete filled

• One-piece smooth steel deck plate

• All piping mounted on stand-offs for ease of cleaning

• Environmental rails around perimeter coming to four drain points

• Lockable battery box and disconnect

• Murphy GEN 2 Control System Evolution control panel

• Remote monitoring standard through M-Link

• Shock mounted inner panel

• Shutdown interlocks and sensors:

• Compressor:

o High/low suction pressure

o High/low interstage pressures (1st & 2nd)

o High/low discharge pressure

o High discharge temperature each stage / cylinder

o Compressor low lube oil pressure

o Compressor no lube oil flow

o Compressor low lube oil level

o High scrubber liquid level

o Multi-Spare set of contacts for digital I/O

• Engine:

o Engine low lube oil pressure

o Engine low lube oil level

o Engine low coolant level

o Engine high lube oil temperature

o Engine high jacket water temperature

o Engine over speed

o Engine high/low intake manifold pressure

o Excessive vibration

o Emergency shutdown contact

o Fuel gas pressure regulators included