Double Regulating Valve (DRV / Balancing Valve) utilizes a precision-machined Y-pattern oblique body with a characterized plug mechanism to deliver accurate hydronic flow balancing, repeatable throttling, and positive shutoff in heating, ventilation, air conditioning (HVAC), and industrial fluid distribution networks. Constructed from corrosion-resistant bronze for small-bore screwed lines or heavy-duty ductile iron for larger flanged distribution mains, these valves allow system engineers to set, lock, and measure precise fluid flow rates across complex piping circuits.
Engineered to optimize thermal efficiency and fluid distribution in closed-loop systems, these valves feature a dual-function internal architecture that combines precise flow regulation with a memory stop feature. The double-regulating mechanism enables the valve handwheel to be used for tight shutoff during system maintenance, while the internal mechanical memory positioner ensures the valve returns exactly to its pre-set balanced position upon reopening without losing system calibration. Integrated with dual self-sealing pressure test ports (P84 binder points), technicians can easily attach digital differential pressure manometers to measure flow rates and commission hydronic systems directly in the field.
Practical Advantages in the Field
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Precise Hydronic Flow Balancing: Micro-adjustable handwheel with clear numerical position display allows exact flow setting and fine-tuned system balancing.
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Integrated Memory Stop Mechanism: Mechanical stop lock preserves the calibrated flow setting after isolation, allowing the valve to reopen to its exact pre-set position.
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Built-in Differential Pressure Test Ports: Dual binder test points provide instant connection for portable manometers to measure pressure drop and calculate flow rates.
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Low Pressure Drop Y-Pattern Body: Oblique internal flow path reduces turbulence and pressure losses across the valve compared to standard right-angle globe designs.
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Dual Isolation & Balancing Functionality: Replaces the need for separate balancing and shutoff valves, saving installation space, labor, and piping material costs.
Brands We Provide
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EMERSON
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KITZ CORPORATION
- MIDDLE EAST PIPING
Typical Deployments
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Commercial HVAC chilled water distribution mains, primary/secondary cooling loops, and cooling tower piping
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Building hydronic heating systems, hot water circulation loops, and district energy sub-stations
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Fan coil unit (FCU), air handling unit (AHU), and chilled beam terminal unit balancing loops
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Industrial process cooling networks, condenser water circuits, and heat exchanger feed lines
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Potable water distribution systems and municipal fluid conditioning circuits
Our Double Regulating Valves (DRV) at GCCValves.com are manufactured and tested in accordance with international safety standards, complete with handwheel position indicators, insulation jackets, and digital flow measurement accessories across the Middle East.
For flow coefficient sizing, differential pressure calculations, or to request a quote, please contact us.
| Specification Parameter | Technical Details |
|---|---|
| Size Range | DN15 to DN600 (1/2″ through 24″) |
| Pressure Ratings | PN16, PN25, PN40 (Class 150 to Class 300) |
| Temperature Range | -10°C to +120°C (Ductile Iron/Bronze); -20°C to +150°C (Cast Steel) |
| Body Materials | Bronze (ASTM B62), Ductile Iron (EN-GJS-400-15 / A536), Cast Steel (A216 WCB) |
| Design Configurations | Variable Orifice (VODRV), Fixed Orifice (FODRV); Y-Pattern Body |
| Seat & Trim Materials | EPDM Encapsulated Disc, Stainless Steel (304/316) Trim, Bronze/Brass Seats |
| End Connections | Threaded (BSP/NPT), Flanged (EN 1092-2 / ASME B16.1 / AS 2129 Table E) |
| Design Standards | BS 7350, EN 12266-1, PED Compliant, WRAS / AS/NZS 4020 Certified |







