Balancing Valve Supplier India | Manual DRV Dynamic PICV | Bronze CI | HVAC Chilled Water | DN15–DN300

Description

Balancing Valve Supplier India | Manual DRV / Dynamic DPCV / PICV | Bronze CI DI | HVAC Chilled Water | DN15–DN300 | KELOR

Supplier: Krishna Industries (KELOR) – Ahmedabad, Gujarat, India
Established: 2017 | GSTIN: 24AKLPP6499B1ZT | IEC: AKLPP6499B
MOQ: 10 Nos | Types: Manual (DRV) / Dynamic (DPCV) / PICV
Body: Bronze / CI / DI / SS | Sizes: DN15–DN300 | Rating: PN10–PN25

Balancing Valve Supplier in India — HVAC and Hydronic Systems

Krishna Industries (KELOR), based in Ahmedabad, Gujarat, is a B2B supplier of Balancing Valves for HVAC and industrial hydronic systems — Manual Balancing Valves (DRV / Double Regulating Valve), Dynamic Balancing Valves (DPCV), and Pressure Independent Control Valves (PICV) — Bronze (DN15–DN50 screwed BSP), Cast Iron, Ductile Iron, and Stainless Steel body — flanged and screwed ends — DN15 to DN300 — PN10 / PN16 / PN25 — Kv rated with integral measuring ports — EN 1653 — GST invoice — MOQ 10 Nos — Pan India dispatch from Ahmedabad.

A balancing valve ensures each branch, zone, or terminal unit in a hydronic system receives its designed flow rate — preventing some units from receiving excess flow while others starve. Without balancing, systems run inefficiently, pumps are oversized, some rooms are overcooled or overheated, and energy is wasted. The correct type depends on whether the system is constant volume (manual balancing valve / DRV) or variable volume with fluctuating pressure (dynamic DPCV or PICV).

Three Types of Balancing Valves — Which One for Your System

Understanding Kv and Measuring Ports — For Commissioning Engineers

Every manual balancing valve has a Kv value at each handwheel position — Kv is the flow rate in m³/h that passes through the valve at a differential pressure of 1 bar. A higher Kv means more flow at the same pressure. At each handwheel graduation, the valve’s internal geometry restricts flow to a specific Kv.

During commissioning, the engineer connects a differential pressure (ΔP) meter to the two measuring ports on the valve body. The meter reads the pressure drop across the valve. Using the formula Q = Kv × √ΔP, the engineer calculates the actual flow through the valve and adjusts the handwheel until the design flow is achieved. This is why measuring ports are not optional — without them, flow measurement requires a separate in-line flow meter, significantly increasing installation cost and complexity.

When ordering: always confirm the valve has integral measuring ports (Schraeder valve type or capped nipple type). Confirm the Kv table is supplied with the valve for commissioning reference.

Body Material Guide — Which Material for HVAC Service

Technical Specifications

Applications in Indian HVAC and Industrial Projects

• Commercial office buildings and IT parks — Bronze DRV DN25–DN50 at each AHU/FCU branch — chilled water two-pipe constant volume distribution — commissioning sets each branch to design flow — prevents overcooling of perimeter zones and undercooling of interior zones
• Hospitals and healthcare facilities — Bronze or SS DRV — strict temperature control in OT, ICU, patient rooms — critical that each zone receives exactly designed flow — PICV increasingly specified in new Indian hospital projects for BMS integration
• Five-star hotels and premium commercial — PICV at each FCU — individual room temperature control, variable flow DDC system — balancing achieved automatically, no commissioning drift
• District cooling networks (AADC, DLF, Hiranandani) — CI or DI flanged DPCV DN100–DN300 — large campus chilled water distribution — maintains constant differential pressure at each building connection point regardless of simultaneous load changes across campus
• Industrial process fluid circulation — CI or SS flanged DRV — coolant distribution to machine tools, heat exchangers, reactors — ensures each machine receives designed coolant flow for consistent process temperature
• Data centres — PICV or DPCV — precision cooling for server room CRAC units — critical that cooling flow is stable and does not fluctuate with changing rack loads — PICV preferred for individual CRAC unit control
• Pharmaceutical clean rooms — SS DRV — chilled water balancing for clean room HVAC — stainless steel for chemical resistance to water treatment inhibitors

Related Products — Krishna Industries (KELOR)

• PN16 Butterfly Valve — for main header isolation in HVAC chilled water systems
• Gear Operated Butterfly Valve — for large bore DN200+ chiller plant header isolation
• Dual Plate Check Valve — for chilled water pump discharge NRV in HVAC plant room
• Y Strainer Valve — install upstream of balancing valves to protect measuring ports and internal cartridge from pipeline debris
• Globe Valve — for throttling and manual flow regulation in non-HVAC process applications

Frequently Asked Questions

1. What is a double regulating valve (DRV) — is it the same as a balancing valve?

Yes — “double regulating valve” (DRV) is the British and Indian HVAC industry term for a manual balancing valve. “Double regulating” refers to the two functions: flow regulation (Kv setting) and isolation (full close). Indian MEP consultants and HVAC contractors use both terms — “balancing valve” and “DRV” — interchangeably. When a project specification says “DRV at each AHU return connection”, it is specifying a manual balancing valve with measuring ports and lock shield. All Krishna Industries manual balancing valves can be supplied with DRV designation on documentation.

2. What is the difference between a balancing valve and a globe valve?

A globe valve is a general-purpose flow control and isolation valve — it can throttle flow but has no calibrated Kv scale, no measuring ports, and no lock shield. It tells you nothing about actual flow rate. A balancing valve (DRV) has a calibrated handwheel with Kv values at each position, integral measuring ports for connecting a ΔP meter to measure actual flow, and a lock shield to preserve the commissioned setting. You cannot commission an HVAC system with globe valves — you need balancing valves with measuring ports to verify and set design flow at each branch.

3. Do I need dynamic balancing valves or manual balancing valves?

If your system runs at constant flow with a fixed-speed pump — constant volume chilled water two-pipe system — manual DRV is the correct and more economical choice. Once commissioned, each branch stays at design flow because the pump pressure is constant. If your system has variable speed pumps or VRF/VRV systems where pump pressure fluctuates as zone control valves open and close — dynamic DPCV or PICV is needed. Manual DRV settings drift in variable pressure systems because a pressure change changes the flow through a fixed Kv. Dynamic valves compensate automatically.

4. Why is bronze body preferred for small bore HVAC balancing valves?

Bronze (gunmetal) provides better corrosion resistance than cast iron in closed-loop chilled water and hot water systems — particularly where glycol and corrosion inhibitors are used in the water treatment programme. CI can corrode at threaded joints and internal surfaces in treated closed-loop water, producing iron oxide particles that foul valve seats and measuring ports. For DN15–DN50 screwed-end balancing valves in HVAC, bronze body is the industry standard specification. CI is acceptable at larger flanged sizes where the cost premium of bronze becomes significant.

5. What is the MOQ?

MOQ is 10 Nos total. HVAC project orders for commercial buildings, hospitals, or data centres — 50 to 500+ Nos across sizes (DN20, DN25, DN32, DN40, DN50 bronze DRV are the most common mix for FCU balancing) — with Kv tables, technical datasheets, and GST invoice. WhatsApp valve type (manual / dynamic / PICV), body material, size list, and quantity for project pricing within 2 hours.

Conclusion

Krishna Industries (KELOR) supplies Balancing Valves for Indian HVAC and hydronic systems — Manual Balancing Valve (DRV / Double Regulating Valve), Dynamic Balancing Valve (DPCV), and Pressure Independent Control Valve (PICV) — Bronze (DN15–DN50 screwed), CI, DI, and SS body — flanged and screwed BSP ends — DN15 to DN300 — PN10 / PN16 / PN25 — Kv rated with measuring ports and lock shield — EN 1653. Commercial buildings, hospitals, hotels, district cooling, data centres, pharmaceutical, and industrial fluid circuits. GST invoice, Kv table supplied, Pan India dispatch from Ahmedabad. WhatsApp valve type, body material, size list, and quantity for project pricing within 2 hours.