Reciprocating Air Compressor Packages, Pangeng Industrial Manufacturer

Quotation within 24 hours
Discharge pressure up to 50 MPa
Free air delivery between 1.3 and 100 m³/min
Air, nitrogen, hydrogen and biogas duties

Pangeng builds oil-lubricated and oil-free reciprocating air compressor packages for drilling rigs, oil injection, leak testing and process plant. Each package is engineered to the inlet pressure, discharge pressure, flow, gas, cooling, drive and mounting requirement you send us.

Send Your Duty Point for a Quote See the Model Selection Table

Where it fits Choose a reciprocating package for intermittent or cyclic demand, high discharge pressure, gas duties, or booster service from a 1.7–3.45 MPa plain-air main.

Where it does not Continuous full-load plant air at 8 bar and modest flow is usually better served by a rotary screw air compressor.

Discharge pressure

Configured up to 50 MPa (500 bar / 7,252 psig)

Free air delivery

Configured between 1.3 and 100 m³/min (46–3,531 cfm)

Quotation

Returned within 24 hours, reviewed by an engineer

Gas media

Air, nitrogen, hydrogen and biogas

Build basis

Every package is engineered to order

Production schedule

45 to 60 days after drawing approval

Compression Capabilities and Configurations

Screw–piston packages

LGF.VF sets deliver 10–31 m³/min (353–1,095 cfm) at 8 or 15 MPa, with 132–500 kW (177–671 hp) drives. Flow is free air delivery on the ISO 1217 basis.

V-type boosters

VF boosters take 1.7–3.45 MPa inlet air and deliver 25–72 m³/min (883–2,543 cfm) at 8 or 15 MPa.

High-pressure frames

Multistage frames are configured up to 50 MPa. Stage count, rod loading and intercooling are selected for the duty point.

Cylinder options

Oil-lubricated and oil-free cylinders change ring and packing material, service intervals and required downstream treatment.

FIG 01. CUTAWAY

Cutaway of a horizontal balanced-opposed reciprocating air compressor showing crankshaft, crosshead, piston rod packing, suction and discharge valves, clearance pocket and pulsation dampers

Core service parts

SYSTEM OVERVIEW: Horizontal balanced-opposed compressor block with running gear, cylinder and valve train.

Frame, crankshaft, connecting rod and crosshead
Cylinder, liner, piston, rings and piston rod
Piston-rod packing, suction and discharge valves
Suction-valve unloaders, clearance pockets and pulsation dampers

Typical packages

Drilling-air, oil-injection and gas-lift skids
Leak-testing, blow-cleaning and conveying air supply
High-pressure plant air for mining, textile, pharmaceutical and electronics works
Skid, enclosed and vehicle-mounted sets for remote sites

REQUEST QUOTATION

Configuration Options and Air Quality

ISO 8573-1 air quality

ISO 8573-1 grades particles, water and total oil separately. Specify the classes required by the process: the compressor is supplied with aftercooling and moisture separation, while dryer and filtration are quoted to reach the stated class.

Oil-free versus oil-lubricated

An oil-free cylinder removes carryover at source but changes ring life and frame price. An oil-lubricated cylinder suits heavy duty where the process accepts trace oil after filtration.

Cooling and mounting

Air-cooling removes a site service and is used throughout the drilling-air line. Water-cooling maintains a steadier discharge temperature in hot ambient conditions, while skid or vehicle mounting follows installation and transport constraints.

Request Configuration

Cylinder lubrication

Oil-lubricated or oil-free dry rings and packing

Oil-free for product or instrument air; oil-lubricated for heavy duty where trace oil after filtration is acceptable
Cooling

Air-cooled finned intercoolers and aftercoolers, or water-cooled shell-and-tube circuit

Air-cooled where water is unavailable; water-cooled for an installed cooling loop
Staging

One to four stages with intercooling

Three stages for published 8 MPa air machines and four for 15 MPa versions
Frame

V-type booster, horizontal balanced-opposed, or screw–piston tandem

V-frames conserve floor area; balanced-opposed frames suit low-vibration skid mounting
Drive and mounting

90–500 kW electric motor or diesel; foundation, skid or vehicle mounting

Motors are wound for the ordered supply; enclosure and mounting follow site conditions

Package scope and auxiliary equipment

Item	What it does	Scope
Compressor block	Frame, running gear, cylinders and valve train sized for the duty point	In base scope
Drive, coupling and guard	Electric motor for your supply, or diesel where there is no grid	In base scope
Cooling and piping	Intercoolers, aftercooler, moisture separation, safety valves and instrument connections	In base scope
Control and electrical equipment	Start, stop, unloading, protection, panel, starter and package field wiring	In base scope
Automatic cycling and drainage	Unattended cycling and timed condensate discharge	Option
After-treatment	Dryer and filtration for specified ISO 8573-1 classes	Option
Enclosure or vehicle body	Weather, noise and transport protection	Option
Receiver and site pipework	Storage volume and distribution-main interconnection	By others unless quoted

Unless quoted otherwise, the package is mechanically complete with control and electrical equipment fitted. Foundations, receiver and distribution pipework remain with you.

Inquire Package Configuration

General arrangement plan view of a Pangeng skid-mounted drilling-air compressor package showing screw block, piston booster stages, coolers and control panel — Plan view of a drilling-air package on one skid.

General arrangement elevation of a Pangeng drilling-air compressor package showing cooler stack, drive motor and skid frame height — Elevation showing the cooler stack, drive motor and skid height.

Specification Range and Model Selection Table

Free air delivery

Between 1.3 and 100 m³/min (46–3,531 cfm)

Discharge pressure

Up to 50 MPa (500 bar / 7,252 psig)

Gas media

Air, nitrogen, hydrogen and biogas

Cooling

Air-cooled or water-cooled

Mounting

Foundation, skid or vehicle-mounted

Medium and High-Pressure Air Models

Model	Free air delivery	Discharge pressure	Type / stages	Drive	Weight
LGF.VF-10/80	10 m³/min (353 cfm)	8 MPa (80 bar / 1,160 psig)	Screw–piston / 3	132 kW	4,800 kg (10,582 lb)
LGF.VF-15/80	15 m³/min (530 cfm)	8 MPa (80 bar / 1,160 psig)	Screw–piston / 3	220 kW	4,900 kg (10,803 lb)
LGF.VF-24/80	24 m³/min (848 cfm)	8 MPa (80 bar / 1,160 psig)	Screw–piston / 3	350 kW	7,600 kg (16,755 lb)
LGF.VF-31/80	31 m³/min (1,095 cfm)	8 MPa (80 bar / 1,160 psig)	Screw–piston / 3	450 kW	11,000 kg (24,251 lb)
LGF.VF-10/150	10 m³/min (353 cfm)	15 MPa (150 bar / 2,176 psig)	Screw–piston / 4	160 kW	4,800 kg (10,582 lb)
LGF.VF-15/150	15 m³/min (530 cfm)	15 MPa (150 bar / 2,176 psig)	Screw–piston / 4	250 kW	4,900 kg (10,803 lb)
LGF.VF-24/150	24 m³/min (848 cfm)	15 MPa (150 bar / 2,176 psig)	Screw–piston / 4	400 kW	7,600 kg (16,755 lb)
LGF.VF-31/150	31 m³/min (1,095 cfm)	15 MPa (150 bar / 2,176 psig)	Screw–piston / 4	500 kW	11,000 kg (24,251 lb)

All eight published sets are oil-injected and air-cooled. The 10 and 15 m³/min frames measure 3,800 × 2,500 × 2,500 mm (150 × 98 × 98 in); the 24 and 31 m³/min frames measure 5,500 × 2,500 × 2,500 mm (217 × 98 × 98 in).

Booster Models for an Existing Air Main

Model	Free air delivery	Inlet pressure	Discharge pressure	Type / stages	Drive
VF-1.5/(17-24)-80	25–35 m³/min (883–1,236 cfm)	1.7–2.4 MPa (247–348 psig)	8 MPa (1,160 psig)	V-type / 2	132 kW
VF-1.5/(17-24)-150	25–35 m³/min (883–1,236 cfm)	1.7–2.4 MPa (247–348 psig)	15 MPa (2,176 psig)	V-type / 3	185 kW
VF-2.2/(17-24)-150	39–52 m³/min (1,377–1,836 cfm)	1.7–2.4 MPa (247–348 psig)	15 MPa (2,176 psig)	V-type / 3	280 kW
VF-3/(17-24)-80	54–72 m³/min (1,907–2,543 cfm)	1.7–2.4 MPa (247–348 psig)	8 MPa (1,160 psig)	V-type / 2	280 kW
VF-0.95/34.5-80	30.5 m³/min (1,077 cfm)	3.45 MPa (500 psig)	8 MPa (1,160 psig)	V-type / 1	90 kW
VF-0.95/34.5-150	30.5 m³/min (1,077 cfm)	3.45 MPa (500 psig)	15 MPa (2,176 psig)	V-type / 2	160 kW
VF-1.9/34.5-80	61 m³/min (2,154 cfm)	3.45 MPa (500 psig)	8 MPa (1,160 psig)	V-type / 1	185 kW
VF-1.9/34.5-150	61 m³/min (2,154 cfm)	3.45 MPa (500 psig)	15 MPa (2,176 psig)	V-type / 2	315 kW

Free air delivery is flow referred to inlet conditions under ISO 1217; it is not swept volume. State ambient temperature, altitude and inlet pressure because they change delivered flow.
Published drive figures are motor ratings, not measured shaft power; package input also includes fan and auxiliary loads.
Booster capacity is stated at the inlet-pressure band in its row because output moves with the supply pressure.
Receiver volume smooths pulsation and gives start-stop headroom, but it does not replace correct machine sizing.

Industrial compressor mechanical part cutaway detailing

Quotation, lead time, and documentation

ENGINEERING PARAMETERS

Package Specification Drivers

DRIVER 01 Discharge pressure and stages

EFFECT ON PACKAGE Adds cylinders, coolers and valve sets

WHAT TO PROVIDE Required point-of-use pressure

DRIVER 02 Free air delivery

EFFECT ON PACKAGE Sets frame size and drive rating

WHAT TO PROVIDE Measured demand and duty pattern

DRIVER 03 Cooling and ambient

EFFECT ON PACKAGE Sets cooler area and site services

WHAT TO PROVIDE Maximum ambient and cooling-water availability

DRIVER 04 Scope and enclosure

EFFECT ON PACKAGE Adds dryers, filtration, enclosure or vehicle body

WHAT TO PROVIDE Base-machine and option requirements

DELIVERY SCHEDULE

Order Stage & Lead Time Breakdown

Quotation

Within 24 hours

Duty review, model, scope list and commercial terms

Engineering and drawing approval

Confirmed with the quotation

General arrangement, electrical schedule and interfaces

Production

45 to 60 days after drawing approval

Manufacture, works test and export packing

Commercial Terms & Compliance

Terms are 30% deposit and balance before shipment by wire transfer. We ship FOB, CIF or CFR; other Incoterms are available on request.
Tell us the destination country at enquiry so the document set is agreed in the quotation.
Nameplate data, test record and operating manual ship with every machine.
Pressure equipment for the European market and United States air receivers have separate regulatory requirements; the party placing equipment on that market carries the obligation.

How the quotation is prepared

An engineer reviews the duty point and returns the model, staging, drive rating and scope split. This lets you compare the proposed package line by line with another supplier.

When the schedule starts

The 45–60 day production window starts after drawing approval, not order placement. It excludes shipping time and site work that remains in your scope.

INITIATE TECHNICAL SPECIFICATION →

Manufacturing Control and Inspection

STEP
Incoming inspection of castings, forgings, valves and bearings against the purchase specification.
STEP
Dimensional checks on cylinders, liners, rods and crossheads, with running clearances recorded per unit.
STEP
Assembly checks on alignment, rod run-out, valve seating and mechanical and electronic protection settings.
STEP
Works test at rated duty, logging capacity, discharge pressure, stage temperatures, power draw and vibration.

The works test record, nameplate data and operating and maintenance manual ship with every order. Pangeng is an ISO 9001 certified manufacturer; the certificate is issued with order documents on request.

A unit that misses its duty point on the works test is corrected and retested against the same written acceptance criteria before shipment. Every machine carries a 12-month warranty on the complete machine, with spare parts and technical support available for the life of the unit.

Acceptance figures

Application engineering, Pangeng

The works record is the evidence for capacity, discharge pressure, temperature, power draw and vibration at the agreed duty point. It is more useful for comparing a delivered machine than a generic datasheet.

Specification and Build Sequence

STEP 01 //

Send the duty point — inlet and discharge pressure, flow, gas, ambient conditions and site supply.
STEP 02 //

Selection review — an engineer selects the frame, staging and cooling, and identifies a better-fit screw or centrifugal machine where appropriate.
STEP 03 //

Written quotation — model, staging, drive rating, scope split and commercial terms within 24 hours.
STEP 04 //

Drawing approval and build — production starts from the approved drawings; the machine is works-tested at the agreed duty before packing.

Duty-Point Submission Card

01. Pressure and flow

WHAT TO SEND Point-of-use pressure, inlet pressure and m³/min or cfm with duty pattern

IMPACT ON PACKAGE Sets stage count, frame size, drive and unloading
02. Gas

WHAT TO SEND Air, nitrogen, hydrogen, biogas and contaminants

IMPACT ON PACKAGE Changes sealing, cylinder material and valve arrangement
03. Site conditions

WHAT TO SEND Maximum ambient, altitude and cooling-water availability

IMPACT ON PACKAGE Sets cooler area and cooling method
04. Electrical supply

WHAT TO SEND Voltage, frequency, phase and starting restriction

IMPACT ON PACKAGE Sets motor winding and starting arrangement
05. Installation constraints

WHAT TO SEND Floor area, transport clearances and whether the set travels

IMPACT ON PACKAGE Sets mounting, enclosure and package dimensions

Equipment and Industries

Pangeng Skid-Mounted High-Pressure Air Compressor Package

EQUIPMENT High-pressure air package

FACILITY

Drilling, oil injection and gas lift

Air-cooled skid or vehicle-mounted sets for water-well, mineral exploration and wellhead-pressure duties.

Leak testing and process plants

High-pressure test-bench, chemical, energy, pharmaceutical and electronics duties with materials selected for the gas.

Inquire Technical Specs

Selecting between reciprocating, rotary screw, and centrifugal packages

01 // Package Comparison Matrix

Criterion	Reciprocating	Rotary screw	Centrifugal
Pressure and flow	Low pressure to 50 MPa; 1.3–100 m³/min across the series	Usually to about 1.3 MPa on packaged plant air	Medium pressure at large flow
Part-load behaviour	Suction-valve unloaders and clearance pockets; unloaded power 0.10–0.15 of full-load power	Inlet modulation, load/unload or variable speed; unloaded power 0.20–0.30	Inlet guide vanes, then blow-off at low turndown
Best duty pattern	Intermittent and cyclic duty	Continuous duty near full load	Continuous base load
Oil-free route	Oil-free cylinders with dry rings and packing	Oil-free screw elements at a specific-power cost	Oil-free by architecture
Service and foundation	Replaceable valves, rings and packing; pulsation requires damping	Element overhaul is a workshop job; light foundation	Specialist overhaul; heavy machine

02 // Specific Power Comparison

Full-load specific power at 100 psig	Published comparison	Basis
Reciprocating	15–16 kW per 100 cfm for two-stage double-acting; 24 kW per 100 cfm for single-stage single-acting	Plant Services trade-press comparison
Rotary screw	16–18 kW per 100 cfm, two-stage; 18–19 kW per 100 cfm, single-stage lubricated	Plant Services trade-press comparison
Centrifugal	15–20 kW per 100 cfm	Plant Services trade-press comparison

Use class comparisons to rank the duty pattern, then take guaranteed figures from the model selection table and written quotation. Published full-load power comparisons are class references, not Pangeng test data.

03 // Duty Pattern Diagnostics

When oversized

A reciprocating package can short-cycle and wear starters when it reaches pressure too quickly. Match the frame to demand and use receiver volume and unloading steps for peaks.

When lightly loaded

A load/unload screw can draw idle power through a shift, while a reciprocating machine is designed for stepped unloading. Compare the duty pattern as well as full-load power.

When turndown is low

A centrifugal machine can waste compressed air through blow-off below its turndown limit. Its strength is continuous base load at flows where smaller frames become impractical.

04 // Logic Routes

Where a reciprocating package works against you

Continuous full-load plant air at 8 bar

Compare a rotary screw package and its sizing calculator.

Very large flow at moderate pressure

Consider a centrifugal package for base load and a reciprocating set for peaks.

Demand below 1.3 m³/min

Use a packaged workshop unit; an engineered industrial frame is not economic at that size.

Sensitive process requiring smooth flow

Specify pulsation dampers and receiver volume, or select a steady-flow machine.

Engineering Selection Tools

Duty-point model selector

Matches flow and inlet/discharge pressure to the published frames.

Launch Selector

Compressed air energy cost comparator

Compares machine classes; evaluates the compressor total cost of ownership.

Compare Cost

Air demand sizing calculator

Builds demand from point-of-use measurements for precise sizing.

Calculate FAD

Stage count & interstage estimator

Estimates pressure-ratio staging and expected interstage temperature.

Estimate Temp

Duty-point submission card

Lists known and missing enquiry fields to streamline specification.

Build Card

Reciprocating Air Compressor FAQs

How many stages does my duty point need?

Stage count follows pressure ratio and discharge temperature. Our published air line uses three stages to 8 MPa and four to 15 MPa, with intercooling; final staging is returned with the quotation.

How does part-load control work?

Capacity is stepped with suction-valve unloaders and clearance pockets. A double-acting two-cylinder machine can be configured for 100, 75, 50, 25 and 0 percent capacity steps.

What is the difference between single-acting and double-acting cylinders?

A single-acting cylinder compresses on one side of the piston, while a double-acting cylinder compresses on both strokes and needs a crosshead and piston-rod packing. Double-acting frames deliver more air per revolution at lower speed but require a longer frame and heavier foundation.

What are the limits of clearance-pocket control?

A pocket on the head end alone reduces that end by approximately half, or about a quarter to 30 percent of machine capacity. Pockets become ineffective as the compression ratio approaches about 1.7; unloaders, multiple machines or another compressor type may then be required.

What does ISO 8573-1 say about oil-free air?

It rates particles, water and total oil as separate classes. An oil-free cylinder removes the lubricated-cylinder oil path, while filtration removes hydrocarbon from intake air.

Air-cooled or water-cooled?

Air-cooling suits sites without cooling water and is used throughout the drilling-air line. Water-cooling gives more stable temperature in a hot ambient where a cooling circuit already exists.

What are performance figures based on?

Displacement compressor performance is quoted under ISO 1217. Free air delivery is referred to inlet conditions and is not swept volume.

What do you need for a quotation?

Send inlet pressure, discharge pressure, flow, gas and site supply voltage. Quotes are returned within 24 hours on business days, reviewed by an engineer.

What is the production lead time?

Production is scheduled for 45 to 60 days after drawing approval, confirmed with the quotation. Shipping time is outside that window.

What are payment and shipping terms?

Terms are 30% deposit and balance before shipment by wire transfer. We ship FOB, CIF or CFR; other Incoterms are available on request.

What warranty comes with the machine?

Every machine carries a 12-month warranty on the complete machine, with spare parts and technical support available for its life.

Will the motor suit my site supply?

Motors are wound to the voltage and frequency stated on the order. Include voltage, frequency, phase and any starting restriction so the starting arrangement can be quoted with the package.

Can you build for gases other than air?

Yes. Pangeng builds packages for air, nitrogen, hydrogen and biogas; the gas changes sealing, cylinder material, valve arrangement and leak-tightness requirements. Hydrogen duty is handled on the reciprocating hydrogen compressor line.

What happens if the machine is oversized?

An oversized machine can short-cycle, wearing starters and control gear. Receiver volume and unloading steps are usually considered from the demand pattern over a shift rather than peak demand alone.

Am I locked into the controller and spares?

Protection has mechanical and electronic layers, and valves, rings, packing and bearings are standard industrial parts listed with the machine. Ask for a recommended spares list at quotation stage to price it against your own supply chain.

Does a booster need a different enquiry?

Yes. State the pressure range of the air main that feeds the booster, because booster capacity is tied to inlet pressure. The selection then distinguishes a booster frame from a complete atmospheric-inlet compressor package.

What should I send for a remote installation?

Include maximum ambient temperature, available cooling water, transport clearance and whether the compressor travels with the rig. These details decide the cooling method, skid or vehicle mounting, enclosure and electrical or diesel drive arrangement.