AS-H Coplastix Stop gate

Looking for an upgraded solution to fabricated stainless steel / aluminium or cast-iron stop gates? Alfa Laval AS-H Coplastix® Watertight Stop Gates/Hand Stops are designed for hassle-free hand operated flow control of wastewater, storm water, hydro, industrial, and sea water.

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High reliability, low maintenance composite stop gates (hand stops)

  • No binding , and meet or exceed AWWA C563 leakage parameters
  • 10 year manufacturer’s warranty
  • Easy-to-operate gates
  • Custom designed to your application

Continuing the high quality you would expect from the original Ashbrook designs, the AS-H Coplastix® composite stop gates (hand stops) are light, yet durable, to ensure reliable operation without maintenance.

How it works


Gate sizes ranging from 8" – 24" (203 mm – 610 mm) widths are made completely of Coplastix® material.

Gates 24" (610 mm) in width and larger are manufactured using the same standards as slide gates.

Features and benefits

  • Corrosion-resistant
  • 10 times less friction than metal-to-metal gates
  • Disc and seal design prevents gate seizure
  • Half the leakage rates of other conventional stop gates
  • 10 year warranty

About Coplastix®

The Coplastix range was designed to exceed all other gate types in longevity without the regular maintenance or exercising. Coplastix materials are lighter, easier to install and extremely durable.

Transform corroded, inoperable gates into smooth operating, corrosion-resistant gates that help put your fluid control system back in operating condition.


How can we help?

With industry-leading wastewater technology and expertise based on the experience from thousands of installations, we can help analyze your unique situation and select the optimal equipment model, configuration and services for your needs and budget. Get in touch by reaching out directly to the local contact for your area or submitting a general inquiry on the contact form. 

Local contact

Doug Thomas
Business Development Manager Fluid Control
Office:  (281) 985-4422
Cell:  (281) 543-1094

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