ARIEL JG & JGA Gas Compressor

prod_JG These medium-sized, driver-rated, separable reciprocating compressors are utilized in gas gathering, but also have proven particularly effective for fuel-gas boost (co-gen), underbalanced drilling, and CNG. They are often paired with electric motor drive as well as natural gas engines.

As with all Ariel compressors, regular, minimal maintenance insures a lifetime of continuous, trouble-free operation.

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Features

Serviceability	Entire unit is designed for ease of repair. All components are readily accessible.
Standardization	Many components are interchangeable throughout the various lines.
Full Pressure Lubrication	A frame-driven lube oil pump provides pressurized, cooled oil through a full flow oil filter to all moving parts in the frame. A divider block distribution system supplies metered oil to cylinder bores and rod packings. Stainless steel tubing is used throughout the cylinder lubrication system.
Capacity Control	Manual head-end variable volume clearance pockets are available on most cylinders, as well as pneumatic suction valve unloaders on a limited basis.
Heavy Duty Crankshaft	Forged steel, precision machined with integral counterweights.
Rugged Crankcase	Heavily ribbed (with spacer bars for stiffening), high-strength cast iron base with lightweight aluminum top cover and removable end covers for ease of access.
Precision Bearing Shells	Precision-machined, tri-metal main and connecting rod bearings.
Rugged Crossheads and Guides	Cast iron crosshead guides with external ribbing and removable side covers. One piece, long life crossheads with direct, full pressure lubrication at top and bottom for minimum wear. Hardened and ground steel crosshead pins.
Rigid Connecting Rods	Forged steel, four bolt, heavy duty "H" section
Quiet Auxiliary Drive	Fully enclosed and continuously lubricated chain drive adjusted by positive positioning eccentric vernier.
Oil and Dust Seal	Foolproof, non-contacting crankshaft oil seal, plus reliable non-wearing dust seal.
Proven Cylinder Design	Non-cooled compressor cylinders with ample nozzles and large gas passages.
High Strength Bolting	Grade 8 or 17-4PH bolting on all pressurized components. All bolting designed for accessibility.
Efficient Valving	Plate-type valves designed for modern speeds, utilizing non-metallic sealing elements as standard. Selected to adhere to established, low valve velocity standards.
Durable Pistons	Wear resistant ductile or gray iron. Available with rider rings.
Stout Piston Rods	Short, stiff, precision-ground alloy steel piston rods with locking crosshead nut. All piston rods are ion-nitrided for surface hardness and longevity. Rolled threads are 1/4" under rod diameter for easy installation through packing.

Frame Specifications

Frame	JG		JGA
Frame	JG/2	JG/4	JGA/2	JGA/4	JGA/6
Number of throws	2	4	2	4	6
Rated Power, BHP	252	504	280	560	840
Rated Power, kW	188	376	209	418	626
Stroke, inches	3.5	3.5	3	3	3
Stroke, mm	89	89	76	76	76
RPM, maximum	1500	1500	1800	1800	1800
Piston speed, FPM	875	875	900	900	900
Piston speed, m/s	4.45	4.45	4.57	4.57	4.57
Total Rod Load, lbs	18000	18000	20000	20000	20000
Total Rod Load, N	80068	80068	88964	88964	88964
Tension, lbs	9000	9000	10000	10000	10000
Tension, N	40034	40034	44482	44482	44482
Compression, lbs	10000	10000	11000	11000	11000
Compression, N	44482	44482	48930	48930	48930
Average Weight with cylinders, lbs	2200	4700	2200	4700	7400
Average Weight with cylinders, kg	998	2132	998	2132	3357
Maximum Length, inches	33	58	3533	58	86
Maximum Length, mm	838	1473	838	1473	2184
Nominal Width, inches	83	83	83	83	83
Nominal Width, mm	2108	2108	2108	2108	2108
Crankshaft Centerline, from bottom, inches	10.25	10.25	10.25	10.25	10.25
Crankshaft Centerline, from bottom, mm	260	260	260	260	260

Cylinders

The long standing basis of Ariel's successful design philosophy is research showing that modern, moderate and high speed compressor cylinders do not require internal water cooling passages. The absence of water jackets results in larger gas passages, reducing pressure-drop losses and yielding the high efficiency Ariel cylinder for the same sized cylinder casting. The proven design of the Ariel cylinder eliminates the cost of the cylinder cooling system and the major maintenance problems associated with water cooling, such as scaling and corrosion.

Ariel cylinders, combined with the innovative design of every Ariel frame, have earned Ariel the reputation for the lowest operating and maintenance costs of any gas compressor available today.

Specifications

Operation	Class	BORE inches	BORE mm	MAWP psig	MAWP bar	Material
Double-Acting	1-3/4M-FS	1.625; 1.750	41; 44	3500	241	Forged Alloy Steel
Double-Acting	2-3/4M	2.500; 2.750	64; 70	1880	130	Ductile Iron
Double-Acting	3M	3.000	76	1190	82	Ductile Iron
Double-Acting	3-1/2M	3.250; 3.500	83; 89	1050	72	Ductile Iron
Double-Acting	4-1/8M	3.875; 4.125	98; 105	750	52	Ductile Iron
Double-Acting	5-1/8M	4.750; 5.125	121; 130	500	34	Ductile Iron
Double-Acting	5-3/4M	5.500; 5.750	140; 146	480	33	Ductile Iron
Double-Acting	6-1/2M	6.125; 6.500	156; 165	275	19	Ductile Iron
Double-Acting	8M	7.500; 8.000	191; 203	175	12	Ductile Iron
Double-Acting	3JG	2.750; 3.000	70; 76	2550	176	Ductile Iron
Double-Acting	3-5/8JG	3.375; 3.625	86; 92	1270	88	Ductile Iron
Double-Acting	3-5/8JG	3.375; 3.625	86; 92	1640	113	Ductile Iron
Double-Acting	4-1/8JG	3.875; 4.125	98; 105	1270	88	Gray Iron
Double-Acting	5-1/8JG	4.750; 5.125	121; 130	865	60	Gray Iron
Double-Acting	6-1/2JG	6.125; 6.500	156; 165	635	44	Ductile Iron
Double-Acting	7-1/2JG	7.125; 7.500	181; 190	600	41	Ductile Iron
Double-Acting	8-7/8JG	8.500; 8.875	216; 225	375	26	Gray Iron
Double-Acting	11JG	10.500; 11.000	267; 279	150	10	Gray Iron
Double-Acting	13-1/2JG	13.000; 13.500	330; 343	115	8	Gray Iron
Tandem	2-1/4P-CE	2.063; 2.250	52; 57	1500	103	Ductile Iron
Tandem	2-3/4P-CE	2.500; 2.750	64; 70	1500	103	Ductile Iron
Tandem	3-1/4P-CE	3.000; 3.250	76; 83	1125	78	Ductile Iron
Tandem	3-1/4P-CE	3.000; 3.250	76; 83	1440	99	Ductile Iron
Tandem	4-3/8P-HE	4.125; 4.375	105; 111	1270	88	Ductile Iron
Tandem	5-1/8P-HE	4.750; 5.125	121; 130	635	44	Ductile Iron
Tandem	5-1/8P-HE	4.750; 5.125	121; 130	1200	83	Ductile Iron
Tandem	5-3/4P-HE	5.500; 5.750	140; 146	575	40	Ductile Iron
Tandem	3-3/4SP-CE	3.500; 3.750	89; 95	1265	87	Ductile Iron
Tandem	4-3/8SP-CE	4.125; 4.375	105; 111	935	64	Ductile Iron
Tandem	6-1/2SP-HE	6.125; 6.500	156; 165	600	41	Ductile Iron
Tandem	8SP-HE	7.500; 8.000	191; 203	440	30	Ductile Iron
Tandem	1-3/4SG-FS-HE	1.250; 1.500; 1.625; 1.750	32; 38; 41; 44	6100	421	Forged Alloy Steel
Tandem	2-1/2SG-FS-HE	2.000; 2.250; 2.500	51; 57; 64	5000	345	Forged Alloy Steel
Tandem	3SG-CE	2.750; 3.000	70; 76	2550	176	Ductile Iron
Tandem	3SG-CE	2.750; 3.000	70; 76	3000	207	Ductile Iron
Tandem	3JG-HE	2.750; 3.000	70; 76	2200	152	Ductile Iron
Tandem	3-5/8SG-CE	3.375; 3.625	86; 92	2550	176	Ductile Iron
Tandem	3-5/8SG-CE	3.375; 3.625	86; 92	3000	207	Ductile Iron
Tandem	3-5/8JG-HE	3.375; 3.625	86; 92	1270	88	Ductile Iron
Tandem	4-1/8JG-HE	3.875; 4.125	98; 105	1125	78	Ductile Iron
Tandem	5-1/8JG-CE	4.750; 5.125	121; 130	865	60	Gray Iron
Tandem	6-1/2JG-CE	6.125; 6.500	156; 165	635	44	Ductile Iron
Tandem	8-7/8JG-CE	8.500; 8.875	216; 225	375	26	Gray Iron