Dry Gas Seal Booster 4AG-0.8
Model: 4AG-0.8
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PURCHASING INFORMATIONMOQ
1 pc
Min. Order Qty / pcs
FOB
Exw
Port of Delivery / China
Lead Time
30 days
from deposit receipt
Maximum output pressure 90 bar, flow rate 1.75 L per stroke, maximum cycle rate 100 cycles/min, rated pressure ratio 0.8:1
It is an oil-free lubricated gas-driven booster unit specially designed to provide stable high-pressure gas source for dry gas seal control panels, with output pressure ≤90bar and service life of over 2000 hours.
Product Information
Product OverviewProduct Introduction
4AG-0.8 is key equipment in the dry gas seal system, used to boost the driving gas pressure to maintain normal operation of the dry gas seal. Its main features are as follows:
Core Parameters
Maximum gas discharge pressure is 9.0 MPa (90 bar), maximum cycling rate is 100 cycles per minute, and the maximum gas flow capacity can reach 175 liters per minute. The nominal pressure amplification ratio is 0.8:1 (the increment of gas pressure relative to driving air pressure, not the maximum ratio).
Design Standards
Complies with ASME Boiler and Pressure Vessel Code, Section VIII, Division 1 (without stamping). The material of the high-pressure cylinder contacting process gas meets NACE MR0175/ISO15156-2 and CE ATEX explosion-proof requirements.
Driving Medium
Air, nitrogen or clean natural gas can be used as the driving gas.
Model and Materials
The model code (e.g. 4AG-0.8-ANV090-0000-0) defines the material of the drive assembly (anodized aluminum A or stainless steel S), the material of the high-pressure cylinder (316L SS, 22% Cr duplex stainless steel, super duplex stainless steel) and the connection type. Standard stainless steel or corrosion-resistant duplex steel is optional for the high-pressure cylinder.
Environmental Requirements
Ambient temperature ranges from -15 to 75°C; when the ambient temperature is below 0°C, the driving air needs to be heated.
This booster is specially designed for dry gas seal systems, featuring high displacement, corrosion resistance and explosion-proof performance, suitable for harsh industrial environments. (Compact size, weight about 48 kg, easy to install.)
Main Technical Parameters
| Gas Booster Cylinder Section | Drive Cylinder Section |
|---|---|
| » Maximum Gas Output Pressure: 9.0 MPa | » Maximum Drive Air Pressure: 1.03 MPa |
| » Maximum Gas Output Temperature: 200 ºC | » Drive Air Temperature Range: 0 to 75 ºC |
| » Maximum Reciprocating Frequency: 100 cpm | » Drive Cylinder Bore: 102 mm |
| » Cylinder Bore: 102 mm | » Single Intake Volume: 1.75 liters |
| » Single Exhaust Volume: 1.75 liters | » Maximum Intake Flow Rate: 175 l/min |
| » Maximum Exhaust Flow Rate: 175 l/min | » Stroke Length: 109 mm |
| » Nominal Boost Ratio: 0.8/1 | » Ambient Temperature: -15 to 75 ºC |
| » Piston Rod Diameter: 15.9 mm | |
| » Medium-side Static Seal Material: See Elastomer Material Specifications for details |
Model Numbering System
Elastomer Selection Guide
| Code | Compound or Trade Name | Description | Temperature Range |
|---|---|---|---|
| A | Aflas | Ammonia resistant and resistant to most hydrocarbon gases but limited low temperature performance | -9 to 200ºC |
| D | FKM | Explosive decompression resistant compound for operating pressures above 10-15 MPa | -26 to 200ºC |
| H | FKM | Resistance to H2S and ammonia concentrations less than 1% and explosive decompression resistant for operating pressures above 10-15 MPa | -17 to 200ºC |
| L | FKM | Low temperature performance compound | -48 to 200ºC |
| V | FKM | Resistance to most hydrocarbon gases but poor ammonia and H2S resistance | -26 to 200ºC |
| K | FFKM | Best chemical resistance and high temperature performance of any elastomers | -20 to 200ºC |
| W | FFKM | Low temperature performance compound | -42 to 200ºC |
| X | FFKM | Explosive decompression resistant compound | -20 to 200ºC |
| E | EPDM | Ammonia resistant but poor for hydrocarbon gases and limited high temperature performance | -57 to 121ºC |
Performance Curve
Resource Download
| Resource Name | Download Link |
|---|---|
| 2D Drawing |  |
| 3D Model |  |
Typical Applications
Use CasesOil and natural gas industry：Used in dry gas seal systems for high-pressure natural gas transmission and compressor units (such as centrifugal compressors).
Refining and petrochemical industry：Supplies seal gas at a pressure higher than that of process gas for critical rotating equipment (such as compressors and pumps) to ensure stable operation of dry gas seals.
High-pressure gas processing and pipelines：Applied in scenarios where the pressure of seal gas needs to be raised above the pressure of process medium to form a gas film seal.
Product FAQ
View all →A gas booster is a pneumatically driven intensifier that uses low-pressure drive gas (e.g. instrument air, typically 1–10 bar) on a large-area piston to compress process gas on the small-area end, producing high-pressure output. It requires no electricity, produces no sparks or heat, and is ideal for boosting, transferring, cylinder charging and gas recovery of nitrogen, natural gas, argon, helium, oxygen and hydrogen in hazardous areas. HIGH-PA air-driven gas boosters reach up to 39,000 psi (≈2,689 bar).
