Estis by Flowco

ZTECH4 | VAULT

VAULT is a methane retention system that captures gas normally vented during blowdown events, providing an efficient and highly effective way to significantly reduce those emissions.
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What is the ZTECH4 | VAULT?

Estis by Flowco ZTECH4 | VAULT prevents methane loss during compressor blowdowns. Instead of venting to atmosphere, VAULT retains the gas—helping operators reduce emissions at a major source point. Paired with SENTRY, operators can achieve a zero‑fugitive‑methane compressor package.
Retains blowdown methane that would otherwise be vented.
Estis by Flowco notes one ZTECH4 | VAULT can reduce fugitive blowdown emissions by 75% on average per unit during maintenance.
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ZTECH 4 schematic
How It Works

Understanding ZTECH4 | VAULT

During standard blowdowns, methane is typically vented. VAULT intercepts and retains this gas instead of releasing it. Together with SENTRY (which handles runtime compressor emissions), operators can address both operating and blowdown sources.

The Flowco Advantage: Why Choose ZTECH4 | VAULT for Methane Abatement?

Targeted Retention

Focused on the blowdown event—a major source of vented methane.

Demonstrated Results

Part of a paired solution that has been proven to reduce methane emissions in field operations.

Retrofit‑Ready

Designed to be retrofitted to other brands’ compressor packages.

Types of APEX™ Controllers

APEX™ Multi-Well Controller – Standard
APEX™ with Patented GAPL/PAGL Algorithm
APEX Mobile Well Controller App
Designed for pads and operations running any combination of artificial lift systems. Control up to 16 wells from one hub.
  • Support for gas lift, plunger lift, and hybrid wells
  • Five Modbus-ready serial ports with auto-detection
  • Up to 100 data points per well
  • Dual Ethernet support
  • Solar or DC power options
  • Class 1, Div 2 rated
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The industry’s first controller built specifically to manage hybrid gas and plunger lift systems using patented optimization logic.
  • Patent No. 11,448,049
  • Cycle-skip technology to optimize production and reduce OPEX
  • Real-time adjustments without field intervention
  • Up to 30% increase in output, 20% reduction in gas
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 Configure, monitor, and optimize remotely with your mobile device.
  • Android & iOS support
  • Real-time data visualization
  • Live system adjustments
  • Local Wi-Fi and Bluetooth-enabled
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Estis cites field validation from customer leak surveys and thermal/OGI imagery, including feedback that “Your units do not leak.”

Major Operator, Staff Facilities EngineerPioneer Resources

Case Study & Field Results

“We went from manual mode to APEX auto-mode on a four-well hybrid pad in the Delaware Basin. Within 60 days, we saw a 27% increase in production and used 22% less gas. No additional hardware, no downtime.”

- Major Oil & Gas Operator in the Permian Basin

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Compliance and Certification

Providing Data to Meet Compliance and Certification

Flowco's vapor recovery solutions are fully compliant with all relevant regulations, including EPA standards. Our systems have undergone rigorous testing and certification processes to ensure they meet the highest industry standards for safety and performance.
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Related Products and Solutions

Explore Related Flowco Solutions

In addition to vapor recovery, Flowco offers a range of complementary products designed to optimize your operations and reduce emissions.
Natural Gas Compressors
Emission Control Systems
Automation and Monitoring Solutions
Explore All Natural Gas Technologies ->
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Get in Touch

We'd love to learn how Flowco can be a partner in enhancing your operations.
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A Cleaner Future For Your Operations

Prevent blowdown emissions.
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