hydraulic natural gas compressor
Home » Products » Natural Gas Compressor » Medium Pressure Natural Gas Piston Compressor Package

Medium Pressure Natural Gas Piston Compressor Package

Gas composition (mol%): natural gas
Flow rate
: 5-7 × 104Nm ³/d
Inlet pressure: 0.8~1.2MPa (G);
Inlet temperature: normal temperature
Exhaust pressure: 5.2MPa (G);
Main motor power: 200kW
Overall dimensions of the machine: ~6000 × 3400 × 2300 mm
Whole machine weight: ~15T
Availability:
Quantity:
facebook sharing button
twitter sharing button
line sharing button
wechat sharing button
linkedin sharing button
pinterest sharing button
whatsapp sharing button
kakao sharing button
snapchat sharing button
sharethis sharing button


Overview



The DFW-3.7/(8~12)-52 Natural Gas Compressor, manufactured by Bengbu United Compressor, is a cutting-edge piece of equipment designed to meet the demanding needs of natural gas processing and transportation. As a D-type (symmetrical balance) compressor, it features water-cooled, oil-free lubrication, and a reciprocating piston design with 2-row, 3-stage compression—all supplied in a modular configuration for seamless integration into various industrial setups.


Ideal for both conventional and unconventional gas applications, this compressor delivers exceptional performance with a processing capacity of 5-7 × 10⁴Nm³/d, making it a reliable choice for oil and gas fields, long-distance pipelines, and shale gas/coalbed methane extraction. It operates efficiently under an inlet pressure of 0.8~1.2MPa (G) and achieves an exhaust pressure of 5.2MPa (G), powered by a 200kW main motor to ensure consistent output even in challenging conditions.


With an overall dimension of approximately 6000 × 3400 × 2300 mm and a weight of ~15T, the DFW-3.7/(8~12)-52 balances power with practicality, featuring a skid-mounted design that simplifies transportation and on-site installation. Whether boosting gas well productivity, supporting pipeline pressure compensation, or recovering low-pressure associated gas, this compressor stands out as a versatile solution for reducing resource waste and enhancing operational efficiency.


Features


High Efficiency & Reliability

Engineered for peak performance, the DFW-3.7/(8~12)-52 boasts high efficiency and strong reliability, minimizing energy consumption while maximizing output. Its oil-free lubrication system ensures clean gas processing, eliminating the risk of medium contamination—a critical advantage for maintaining gas purity in applications like pipeline transportation and industrial use. The compressor’s automated operation reduces manual intervention, lowering the risk of human error and ensuring consistent performance 24/7.

Low Maintenance & Operational Ease

Designed with durability in mind, this compressor features fewer vulnerable parts, reducing the frequency of repairs and replacements. Its low vibration and noise levels create a safer, more comfortable working environment, while intuitive controls make operation and maintenance straightforward—even for teams with basic technical training. The crankcase, crafted from high-quality gray cast iron, includes built-in lubrication storage and accessible ports for oil drainage, temperature monitoring, and routine inspections, streamlining upkeep procedures.

Skid-Mounted Design for Easy Deployment

All main and auxiliary components of the DFW-3.7/(8~12)-52 are integrated into a skid-mounted structure, ensuring stable operation and simplifying transportation. This design eliminates the need for complex on-site assembly, allowing for quick installation and commissioning—saving time and labor costs for project managers. Whether deployed in remote oilfields or urban pipeline stations, the compressor adapts effortlessly to diverse environments.

Patented Innovations

Backed by advanced engineering, the DFW-3.7/(8~12)-52 incorporates several patented technologies that enhance its performance and longevity. These include a piston rod thread protective sleeve (ZL 2017 2 1907021.7), a piston ring support device (ZL 2018 2 0294776.2), a range piston for symmetrical balanced compressors (ZL 2017 2 190177.0), and an integrated long-short double compartment (ZL 2018 2 0294762.0). These innovations underscore its commitment to quality and technical excellence.


Application Area


Natural gas compressors are used in oil and gas field development to increase gas well productivity, including natural gas transportation, oil and gas separation, wellhead pressurization, and other processes. For example, by using a compressor to boost and recover low-pressure associated gas, resource waste can be reduced. In addition, compressors are also used for gas well production and gathering in unconventional natural gas extraction such as shale gas and coalbed methane

The compressor is the core equipment of long-distance pipelines, which ensures stable transportation of natural gas through multi-stage pressurization. For example, compressor units are installed at the initial, intermediate, and final stations to compensate for pipeline pressure losses and achieve long-distance transportation.


Highlight Advantages



high efficiency operating Installation honor
Has high efficiency, strong reliability, and high degree of automation; Less vulnerable parts, low vibration, low noise, and easy operation and maintenance The main and auxiliary equipment of the compressor are all installed on the sled, running smoothly and reliably. The overall sled installation is convenient for the transportation and installation of the compressor The entire machine components are carefully designed


Patent Certificates



certificates

A piston rod thread protective sleeve ZL 2017 2 1907021.7


certificates

A piston ring support device ZL 2018 2 0294776.2

certificates

A range piston ZL 2017 2 190177.0 for symmetrical balanced compressors


certificates

Integrated long short double compartment ZL 2018 2 0294762.0


Whole Machine Description


The compressor adopts D-type (symmetrical balance type), water-cooled, oil-free lubrication, reciprocating piston type, 2-row 3-stage compression, and the entire unit is supplied in a modular manner.

The compressor crankcase is made of gray cast iron and has four holes of different diameters for installing crosshead slides, bearings, and bearing seats. The lower part of the crankcase can store lubricating oil for the compressor to lubricate; The upper surface of the crankcase has an interface for installing a fuel inlet (breathing port) cover plate; In addition, the crankcase also has spare interfaces such as oil drain port, oil gauge observation port, bearing seat oil injection port, and installation oil temperature measurement port. The oil drain port of the crankcase has been connected to the outside of the compartment and is equipped with a manual ball valve for oil discharge from the crankcase.

The middle body of the compressor is a double middle body structure, ensuring that the middle body space is greater than one stroke, preventing compressor oil from entering the cylinder from the crankcase, thus ensuring that compressor oil does not contaminate the medium. The material of the compressor cylinder is gray cast iron/forged steel, and it adopts an oil-free lubrication design, which does not require oil lubrication. The cylinder head material is gray cast iron/forged steel, and the air valves are arranged axially on the cylinder head.


DW 6.74 (3.3) / 0.7 (5-12) -12 Hydrogen Compressor DW 6.74 (3.3) / 0.7 (5-12) -12 Hydrogen Compressor


The compressor in this picture is a non-standard product. The product provides independent solutions tailored to customers' specific usage requirements (flow rate/purity/pressure, usage environment, main purpose, and customer specific requirements), from design to product customization.


  • Structural form: D-type/M-type/S-type/W-type/V-type/Z-type

  • Cooling method: water cooling/air cooling/mixed cooling

  • Installation form: fixed/mobile/pry mounted/cabin type

  • Drive mode: motor drive/diesel engine start

  • Transportation: sea/air/land

  • Packaging:

    Metal cabin
    Wooden box
    Soundproof cabin
    Metal cabin Wooden box
    Soundproof cabin


Technical Parameter



No. Model Medium Flow rate
(Nm3/h)
Exhaust pressure
  MPa
Motor power
(kW)
Cooling method Overall dimensions
    (mm)
Weights
(kg)
1 VW-3.5/1-18 Natural gas 420 1.8 55 Closed water coole d 4000×1800×2200 5000
2 DF-0.4/(2~6)-250 Natural gas 160 25 30 Air-cooled 2800×1800×1500 3500
3 DFD-1.36/(30~50)-250 Natural gas 4167 25 315 Air-cooled 8500×3700×4100 22000
4 DFW-3.7/(8~12)-52 Natural gas 2083 5.2 200 Air-cooled 6000×3400×2300 15000
5 DFW-5.3/3-15 Natural gas 1100 1.5 90 Air-cooled 6500×3000×2500 6000
6 DFWD-5.7/(0. 1~0.5)-40 Natural gas 75~365 4 90 Air-cooled 7000×3400×2500 100000
7 DFWD-5/(1.5~3.6)-14.2 Natural gas 700 1.42 90 Air-cooled 5000×3200×2200 6500
8 DW-9/3-35 Natural gas 2000 3.5 250 Air-cooled 4800×4000×2000 13000
9 MFWD-7/(10~30)-35 Natural gas 6250 3.5 315 Air-cooled 6300×3200×3200 16000
10 VF-1.4/(5~7)-250 Natural gas 500 25 110 Air-cooled 5000×2400×2100 6800
11 VF-2.2/(0.5~0.7)-60 Natural gas 180 6 45 Air-cooled 6000×2500×2400 8000
12 VWF-1.65/(25~35)-50 Natural gas 2500 5 90 Air-cooled 4500×2500×2100 5500
13 VWF-11/(0.5~2)-14 Natural gas 1000 1.4 160 Air-cooled 5200×2000×2200 6000
14 VWF-13.6/(0.05~0.2)-6 Natural gas 800 0.6 90 Air-cooled 5000×2200×2200 6000
15 VWF-8/(0.6~3)-12 Natural gas 1900 1.2 132 Air-cooled 5800×2300×2450 7800
16 VWF-9/0.05-14 Natural gas 500 1.4 90 Air-cooled 3800×2000×1600 3500
17 DFW-15.9/(0.4~1)-16 Natural gas 1330 1.6 250 Mixed cooling 5000×3400×2000 12000
18 VWFD-7.5/(0.5~1)-3 Natural gas 20000 0.3 45 Mixed cooling 4000×2300×2300 400
19 MFWD-6.0/(25~45)-45 Natural gas 20000~36000 4.5 250 Mixed cooling 6500×3000×3200 17000
20 DW-2.8/(16~25)-50 Natural gas 2500 5.0 160 Water-cooled 4300×3000×1600 7000
21 DW-3/15-52 Natural gas 2550 5.2 185 Water-cooled 3800×3400×2300 9000
22 DW-4.9/(1.5~2.5)-22 Natural gas 700 2.2 110 Water-cooled 3800×2700×1800 6000
23 DW-6.9/(7~15)-20 Natural gas 4000 2.0 160 Water-cooled 3600×2300×1600 4500
24 DW-1.92/2.5-22 Natural gas 320 2.2 45 Water-cooled 3200×3000×1700 3000
25 DW-7.6/1.5-25 Natural gas 1000 2.5 160 Water-cooled 5200×3200×2200 10000
26 DWD-8/4-10 Natural gas 2100 1.0 110 Water-cooled 5800×3300×2300 8800
27 MW-19.2/(1~17)-(17~25) Natural gas 2000 1.7~2.5 400 Water-cooled 7200×3600×2100 21000
28 VW-8.4/(2~4)-20 Natural gas 1500 2 185 Water-cooled 5500×2200×2700 6000
29 VW-9. 1/(0.05~0. 1)-5型 Natural gas 500 0.5 55 Water-cooled 3500×2200×1800 5000
30 ZW-1.6/(35~52)-(39~56) Natural gas 4000 3.9~5.6 37 Water-cooled 3200×1700×1800 2500


Project Case


Ukraine Project Alibek oilfield in Southern Kazakhstan Ningxia Zhongneng new materials engineering
Ukraine Project Alibek oilfield in Southern Kazakhstan Ningxia Zhongneng new materials engineering


FAQ


What is the main application of the DFW-3.7/(8~12)-52 Natural Gas Compressor?

This compressor is widely used in oil and gas field development to boost gas well productivity, including low-pressure associated gas recovery, oil-gas separation, and wellhead pressurization. It also serves as a core component in long-distance pipelines, where multi-stage pressurization compensates for pressure loss, ensuring stable gas transportation. Additionally, it supports unconventional gas extraction, such as shale gas and coalbed methane.


Can the compressor be customized for specific project needs?

Yes. Bengbu United Compressor offers tailored solutions based on customer requirements, including flow rate, pressure, purity, operating environment, and intended use. Customization options cover structural forms (D-type, M-type, S-type, etc.), cooling methods (water-cooled, air-cooled, mixed cooling), installation types (fixed, mobile, skid-mounted, cabin-type), and drive modes (motor-driven or diesel-engine start).


What materials are used in key components of the compressor?

The crankcase is made of gray cast iron, designed to store lubricating oil and house crosshead slides, bearings, and bearing seats. The cylinder and cylinder head use gray cast iron or forged steel, with an oil-free lubrication design to prevent medium contamination. The middle body features a double structure to ensure oil from the crankcase does not enter the cylinder, maintaining gas purity.


Are there any proven project cases for this compressor?

Yes. The DFW-3.7/(8~12)-52 has been successfully deployed in international projects, including the Ukraine Project, the Alibek oilfield in Southern Kazakhstan, and the Ningxia Zhongneng new materials engineering in China. These cases demonstrate its adaptability to diverse geographical and operational conditions.


What support services are available for buyers?

Bengbu United Compressor provides comprehensive support, including installation guidance, maintenance training, and access to spare parts. Customers can also refer to technical documents, videos, and FAQs via the company’s resources. For urgent inquiries, support is available through WhatsApp (+8618955218331), telephone (+86-13955206799), or email (bblhcompressor@gmail.com).


Telephone

+86 13955206799

Landline

+86-552-4190082

Address

No. 66 Jinhe Road, Huaiyuan Economic Development Zone, Bengbu City

Quick Links

Products

About Us

Services & Support

Subscribe to Our Newsletter

We look forward to working with you to create a better future together.
​Copyright © 2025 Bengbu United Compressor Manufacturing Co., Ltd. All Rights Reserved.