API618 industrial gas compressors find applications across a wide range of industries, including petrochemical, manufacturing, and power generation. With customizable options and configurations, our compressors can be tailored to meet the unique demands of your process. Experience the benefits of improved productivity and reduced operating costs with our reliable and efficient compressors.
API618 industrial gas compressors find applications across a wide range of industries, including petrochemical, manufacturing, and power generation. With customizable options and configurations, our compressors can be tailored to meet the unique demands of your process. Experience the benefits of improved productivity and reduced operating costs with our reliable and efficient compressors.
Our reciprocating compressors are engineered to meet and exceed the stringent requirements of API 618 for reliability, safety, and performance in hydrocarbon, chemical, and industrial gas applications. Key compliance features include:
Pulsation & Vibration Control: Advanced acoustic simulation and mechanical design to minimize pulsation and vibration risks.
Material Integrity: Robust construction with API-specified materials for corrosive and high-pressure environments.
Emissions Management: Sealed systems and packing arrangements to reduce fugitive emissions.
Maintenance Accessibility: Designed for ease of inspection, part replacement, and long-term serviceability.
Design:
Horizontally opposed cylinders with balanced operation for smooth performance.
Modular frame structure for simplified maintenance.
Applications:
Mid-to-high pressure gas processing (e.g., natural gas, CO₂, hydrogen).
Refineries, petrochemical plants, and gas transmission.
Key Features:
Capacity Range: 15~50 kW]
Pressure Rating: up to300bar
API 618 Highlights: Integrated pulsation dampeners, double-acting cylinders.
Design:
Vertical, double-acting cylinders with crosshead guidance for heavy-duty cycles.
Compact footprint ideal for space-constrained installations.
Applications:
High-pressure gas reinjection (e.g., LNG, EOR).
Synthesis gas compression in fertilizer/chemical industries.
Key Features:
Capacity Range: 1000~60000Nm3/h
Pressure Rating: 300bar.
Configurations: Single or two-stage compression with non-lubricated options.
API 618 Highlights: Reinforced distance pieces, advanced rod load monitoring.
Design:
Pre-assembled, skid-mounted modules for rapid deployment.
Customizable layouts with integrated auxiliaries (coolers, separators).
Applications:
Offshore platforms, remote gas fields.
Biogas upgrading, hydrogen fueling stations.
Key Features:
Capacity Range: 10000~100000Nm3/h
Pressure Rating: Up to 300bar.
Configurations: Electric driven, explosion-proof options.
API 618 Highlights: Full package compliance, including piping and safety systems.
Reciprocating compressors operate on the principle of positive displacement, where gas is compressed by reducing its volume through the reciprocating motion of pistons within cylinders. Below is a breakdown of the key operational phases and design features compliant with API 618 standards:
Intake Stroke:
The piston moves downward, creating a vacuum that opens the suction valve.
Gas enters the cylinder at low pressure.
Compression Stroke:
The piston reverses direction and moves upward, closing the suction valve.
Gas volume decreases, increasing pressure until it exceeds the discharge valve’s cracking pressure.
Discharge Stroke:
The discharge valve opens, forcing compressed gas into the outlet piping/system.
The piston completes the stroke, resetting the cycle.
API 618 Compliance: Double-acting cylinders (compression on both piston strokes) are often used to maximize efficiency and minimize pulsation, as mandated by API 618.
Crankshaft & Connecting Rod:
Converts rotary motion from the driver (e.g., motor, engine) into linear piston movement.
Piston & Cylinder:
Precision-machined pistons and hardened cylinders ensure leak-free compression, critical for handling toxic/flammable gases per API 618.
Valves (Suction/Discharge):
Pressure-actuated reed or plate valves designed for high-cycle fatigue resistance and gas compatibility.
Pulsation Dampeners:
ASME-coded pulsation bottles or dampeners suppress pressure fluctuations, meeting API 618’s pulsation control requirements.
Piston Rod Packing:
Multi-ring packing systems prevent gas leakage, adhering to API 618’s stringent emissions criteria.
Dynamic Load Analysis:
Forces, vibrations, and rod loads are rigorously simulated to avoid mechanical failure during continuous duty cycles.
Material Selection:
Cylinders, valves, and piping use API-specified materials (e.g., stainless steel, alloy coatings) to resist corrosion from aggressive gases like H₂S or CO₂.
Cooling & Lubrication:
Jacketed Cylinders: Maintain optimal gas temperature to prevent degradation.
Non-lubricated Designs: Optional for applications requiring oil-free gas (e.g., oxygen, food-grade CO₂).
Safety Systems:
Integrated pressure relief valves, temperature sensors, and vibration monitors ensure fail-safe operation.
Isentropic Efficiency: Typically 75–90%, depending on gas properties and staging.
Pressure Ratio: Achieves ratios up to 1:3 per stage; multi-stage configurations used for higher ratios.
Pulsation Control: Meets API 618’s allowable pulsation limits (<2% peak-to-peak) to protect downstream piping.
Proven Reliability: 23+ years of field operation in extreme conditions.
Custom Engineering: Tailored solutions for your gas composition and process needs.
Global Support: 24/7 service teams and OEM spare parts network.
Contact Us for a detailed API 618 compliance report or to request a performance simulation!
Keepwin offers independent solutions according to flow/purity/pressure, usage environment, main application, and special customer requirements at a competitive prices. Our compressor booster is made of high-quality materials and has been tested thoroughly to ensure the best quality.
There’s a reason why manufacturers worldwide turn to Keepwin as the top compressor manufacturer. From industrial manufacturing to energy industrial and everything in between, our systems have been trusted in 100+ countries and regions for 20+ years.
Ready to take your industry to new heights? Continue reading to learn what makes Keepwin the clear choice for gas compressors
Manufactured as ISO9001 ISO14001 standard. Got CE TUV ASMI Etc Certificate
Highly experienced engineer with 39 years of extensive compressor design expertise
From design to installation, our compressor solution saves you time and effort.
benefit from almost 22 years of experience.
Don’t Just Take Our Word for It: Keepwin’s Compressor Excellence. Manufacturers worldwide have praised Keepwin’s compressors for their exceptional accuracy, durability, power, speed, and quality. See for yourself why Keepwin is the trusted choice for compressor solutions.
“ Keepwin 1500Nm³/h, 500bar membrane nitrogen booster we acquired a decade ago continues to exhibit stable performance after ten years of operation. Besides the periodic replacement of wear parts, the equipment rarely malfunctions, greatly reducing our maintenance costs”
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Transparency is a core value at KEEPWIN. To help you make an informed decision, we’ve compiled a list of frequently asked questions about our compressor systems.
Founded in 2002, Keepwin is a well-established manufacturer of piston and diaphragm compressors. With production facilities in Suzhou and Bengbu, we are dedicated to delivering reliable, energy-efficient, and high-quality compression solutions. Our goal is to exceed customer expectations through exceptional service and innovative products.
KEEPWIN offers a diverse range of compressors, including screw, screw-piston combination, reciprocating piston, and oil-free diaphragm types. Our advanced engineering capabilities enable us to deliver tailored solutions for demanding applications in oil & gas, chemical, food, and hydrogen energy sectors.
Keepwin has a proven track record of designing and manufacturing compressors capable of handling demanding applications. Our compressors can deliver power outputs up to 3000 kW, discharge pressures up to 3200 bar, and flow rates up to 60000 Nm³/h, making them suitable for a wide range of gases including air, hydrogen, nitrogen, and corrosive gases.
We have dealers worldwide. Our agents are an essential part of our team, providing a full range of services to our customers. In fact, you can receive the entirety of our products and services from our professional agents. Contact us and we will propose a dealer near you.
Our compressors are designed and manufactured to meet the stringent requirements of the API 618 standard. API 618 reciprocating compressor for high reliability and low maintenance in refinery, natural gas, and hydrogen applications.
As your one-stop gas compressor solution provider, Keepwin offers end-to-end services, from manufacturing and installation to comprehensive training. This ensures you get the most out of your investment without any delays.
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"When we chose Keepwin to provide helium membrane compressors three years ago and signed a 100-day contract, they exceeded all expectations. Keepwin completed the production plan, engineering drawings, and equipment commissioning ahead of schedule, showcasing their exceptional professionalism and efficiency."
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