AS-H Coplastix Slide gate

Looking for an upgraded solution to fabricated stainless steel / aluminium or cast-iron slide gates? Alfa Laval AS-H Coplastix® custom built slide and weir gates are especially designed for control of wastewater, storm water, hydro, industrial, and sea water. The lighter gate provides easier manual operation and requires less horsepower when actuators are employed.

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High reliability, low maintenance composite slide gates

  • No binding , and meet or exceed AWWA C563 leakage parameters
  • Ten year manufacturer’s warranty
  • Easy-to-operate gates do not require exercising
  • Custom designed to your application
Continuing the high quality you would expect from the original Ashbrook designs, Alfa Laval AS-H Coplastix® composite stop gates (hand stops) slide gates are light, yet durable, to ensure reliable operation. Their corrosion resistant material provides years of maintenance free service.

How it works


Gates are opened and closed with the aid of a stem that connects the gate operator to the gate.  They can be opened and closed manually or with the assistance of an actuator.

AS-H Coplastix® slide are built with internal steel matrices that lend strength to the doors. The matrices are then encapsulated by a special formulated composite called “Coplastix”.

All contact faces are made from composite and ultra-high-molecular-weight polyethylene materials for minimum friction, self-lubrication, and a lighter gate. Slide gates exceed the AWWA C563 standard.

Frame mounting options include wall, channel, or flange mount.

Gates are available in configurations anywhere from 8" x 8" (203 mm x 203 mm) up to 144" x 144" (3,658 mm x 3,658 mm).

Features and benefits

  • Corrosion-resistant
  • Gate exercising not required
  • Ten times less friction than metal-to-metal gates
  • Disc and seal design prevents gate seizure
  • Half leakage rates of other conventional gates
  • Ten 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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