If there’s one valve that quietly keeps a municipal water network running, it’s the Cla-Val Model 100-01 Hytrol. It doesn’t look complicated — and that’s precisely the point. It’s the main valve behind every Cla-Val automatic control valve, and once you understand how it works, it’s easy to see why utilities across Southern Africa keep specifying it project after project.
One Core Design, Endless Configurations
The Hytrol is a hydraulically operated, diaphragm-actuated valve, available in globe or angle pattern, and offered in full bore (GE), reduced bore (NGE), angle (AE), and Tytan (600–1400) configurations. But what makes it genuinely useful is how one core valve body can be piloted to perform completely different jobs depending on what your network needs:
- 90-01 — Pressure Reducing
- 50-01 — Pressure Relief or Sustaining
- 129-01 — Modulating Float Level Control
- 136-01 — On/Off Solenoid Control
- 40-01 — Flow Control
- 81-01 — Check Valve
- 100-CF1 — On/Off Float Level Control
- 270-01 — Altitude Level Control
- 60-31/02 — Pump Control
That’s nine distinct control functions, all built around the same reliable main valve platform. For a utility maintenance team, that means fewer spare parts to stock, fewer unfamiliar mechanisms to learn, and a consistent maintenance approach across very different parts of the network.
Minimal Parts, Easy to Repair
The Hytrol consists of three major components — body, diaphragm assembly, and cover — and the diaphragm assembly is the only moving part. A synthetic rubber disc, held on three and a half sides by a disc retainer and disc guide, forms a seal with the valve seat when pressure is applied above the diaphragm. That sealed chamber in the upper portion of the valve is what separates operating pressure from line pressure — and it’s the reason this valve requires no lubrication or packing.
Fewer moving parts means fewer things that can fail, and when something does need attention, technicians aren’t working through a maze of proprietary mechanisms to get there.
What This Means for Maintenance Planning
Cla-Val recommends a periodic inspection schedule to track how operating conditions affect the valve over time — but “periodic” here means genuinely low-frequency, not constant intervention. For utilities managing dozens or hundreds of control points across a distribution network, that reliability compounds: less unplanned downtime, fewer emergency site visits, and a maintenance budget that goes further.
The Foundation Before You Add Intelligence
If you’ve read our post on pressure management, you’ll know that Cla-Val’s smart, actuated valves build directly on this same Hytrol platform — the PCM and CPC ranges are the Hytrol design extended with electronic actuation and data logging. In other words: get the foundation right first. The Hytrol is where that foundation starts.
Speak to the Specialists
As appointed Cla-Val agents across Botswana and South Africa, Metsi Supplies can help you spec the right Hytrol configuration for your application — whether that’s pressure reducing, level control, or pump control. Get in touch with our team for datasheets, dimensions, or project-specific advice.
Contact us: sales@metsisupplies.co.bw | +267 7610 1206
