Cast Steel Manual Regulating Valve

A cast steel manual throttling and flow regulating valve designed for district heating, circulating water, thermal power plant pipeline networks, refrigeration, and HVAC applications. The valve combines cut-off, throttling, and proportional flow regulation in a single unit, serving as an adjustable alternative to fixed-area throttling orifice plates. Flow is modulated by rotating a cylindrical valve disc against a matching valve seat, varying the window opening area to achieve the desired flow rate. The 60° operating arc is clearly indicated on a graduated indicator board mounted above the valve, allowing operators to set and repeat specific flow positions without instrumentation.

The near-linear regulation characteristic delivers more predictable, stable flow control than gate valves or standard globe valves, making it well suited for balancing branch circuits in heating and cooling distribution networks. By enabling each branch to be set to its design flow rate, the valve helps eliminate thermal imbalances, reduce over-pumping on high-flow branches, and improve overall network hydraulic performance — contributing directly to energy savings and occupant comfort.

• Combined cut-off, throttling, and flow regulation in a single valve body
• Cylindrical rotating disc design for smooth, near-linear flow modulation across the full 60° operating range
• Graduated opening indicator board for repeatable, visual flow position setting without instrumentation
• Replaces fixed-area throttling orifice plates with a field-adjustable alternative
• Improves hydraulic balance across district heating and cooling distribution networks
• Reduces over-circulation on high-flow branches, lowering pump energy consumption
• Cast steel body for robust performance in pressurized hot water and thermal fluid service
• Simple construction — body, seat, disc, stem, and bonnet — for straightforward installation and maintenance