Cold Weather Applications

Cold Weather EnclosureOur fully enclosed, insulated and heated GasJack package is fully compliant with Class 1, Division 2 electric codes (CSA and CE certified) and perfect for cold weather environments around the world. The fuel efficient unit offers metering, separation, and compression, all on one skid. The building has plenty of well lit work space, allowing operation and routine maintenance to be performed inside the enclosure in relative comfort.


V-8 design, 460 C.I.D. Ford industrial gray iron casting – integrated patented compressor head

Cast iron counterweighted and dynamically balanced with five main bearings

Forged aluminum over steel frame balanced and fitted with four special rings which inhibit slippage or “blow by” of fluids and gas in crankcase

Compressor Valves:
Plate type concentric valve in which both suction and discharge functions are incorporated into one valve system

Gas Aftercooler:
Air cooled, three (3) row six (6) pass Air-X-Hemphill ASME coded gas cooler with direct drive nonmetallic fan. Steel header with access plugs for ease of cleaning. Maximum gas discharge temperature after cooling is 20°F above ambient.

Compression Ratios:
By-design, up to 20 to 1 due to efficient compressor design providing for a wide operating pressure range discharging up to 500 PSIG (3,447 kPa)

Skid Dimensions:
Fully enclosed, vented, CSA Class 1 Div 2 insulated and heated building 8.5 feet wide by 15.5 feet long with environmental fluid containment rail and 1” drain connections – 12,000 lbs (5443 KG)

Operation Ancillary Equipment:
All vessels, including the gas after-cooler, are protected by Mercer pressure relief valves. Appropriate connections are provided for use of test gauges. Manual bypass valving is included for ease of starting and for compressor blowdown.

Compressor Design Specification:

GasJack™ MP Unit – 48 HP

Bore and Stroke: 3.750 in. X 3.850 in.

Suction Pressure: 16” Hg vacuum to 60 PSIG (413 kPa)

Discharge Pressure: 50 (345 kPa) to 500 PSIG (3,447 kPa)

Piston displacement: 170 cubic inch

RPM load range: 1200 to 2100

Fuel Gas: 7 to 10 mcf/Day (0.20 to 0.28 e3m3/Day)

Gas volume through-put capacity up to 600 mcf/Day (17 e3m3/Day)
2 inch NPT suction and discharge connections
1 inch NPT start gas connection
1 inch NPT liquid disposal connection
> 0.05% H2S (500ppm) maximum operating threshold

The F.W. Murphy 24 volt control system is in a weatherproof enclosure containing suction and discharge gauges, hour meter, tachometer, starting lock out timer, stop/run toggle and TTDJ – DCT digital fault annunciator c/w RS 485 serial communications port to indicate the following:

Standard Equipment:
1. ASME Coded Pressure Vessels
2. ALTRONIC – CPU 90 & CD 200 shielded electronic ignition
3. 20” X 60” vertical gas separator c/w integrated blow-case for efficient fluid handling even into vacuum – 1.5 Bbl/FL/Hour processing capacity 36 Bbl/FL/Day or 5.7m3
4. IMPCO natural gas carburetor c/w enclosed filter cold air intake
5. Catalytic heater and hospital muffler
6. Automatic oil level control with 15 gallon day tank
7. Control, safety and sensor control panel
8. AUSTART pneumatic starter c/w pressure regulator set at a minimum operating pressure of 40 PSI to a maximum of 80 PSI
9. KIMRAY 1000# WP pneumatic control valves