CI body butterfly valve supplier India — Wafer Type PN10 | KELOR
Krishna Industries (KELOR), based in Ahmedabad, Gujarat, supplies Butterfly Valves with CI Body and S.G. Iron Disc. As a premier PN10 wafer type butterfly valve supplier Ahmedabad, we provide nitrile seat (standard) — PN10 / 150# rating — 2″ (DN50) to 12″ (DN300) — lever operated (DN50–DN200) and gear operated (DN250–DN300) — conforming to API 609 and IS 13094 — GST invoice — MOQ 10 Nos — Pan India dispatch from Ahmedabad.
Mill Test Report 3.1 can be provided on request from verified vendors. Hydro test certificates, API 609 test reports and BIS/ISI marked products arranged on request from BIS-certified vendors. OEM logo and packaging available on bulk orders.
Wafer type butterfly valve manufacturer India — CI Body Overview
Krishna Industries (KELOR) supplies the butterfly valve with CI body and S.G. iron disc — a wafer type flow control valve engineered for reliable shut-off and flow regulation in piping systems. As a reliable Ductile iron disc wafer butterfly valve wholesale supplier India, we serve water treatment projects, HVAC installations, fire fighting systems, and process plant applications across India with competitive pricing, full documentation support, and Pan India dispatch from the Ahmedabad warehouse.
The compact wafer design allows for easy installation between flanges, making it a preferred choice where PN10 or 150# pressure ratings are required. The cast iron body provides mass and rigidity for the pressure boundary, while the S.G. iron (ductile iron) disc delivers the tensile strength and impact resistance needed for the moving component under hydraulic shock and repeated cycling. This CI body butterfly valve with S.G. iron disc is supplied from verified and quality-assured vendor partners who conform to API 609 design and IS 13094 requirements.
How Does a Wafer Butterfly Valve Work?
A butterfly valve uses a flat, circular disc mounted on a central stem that rotates 90 degrees (quarter turn) to open or close the flow path. In the fully open position, the disc is parallel to the flow direction, offering minimal resistance and low pressure drop. In the fully closed position, the disc is perpendicular to the flow and presses against the seat, creating a seal. The intermediate positions allow throttling or flow regulation, making the butterfly valve more versatile than an on/off gate valve. Understanding this operating principle helps procurement teams select the correct valve for their system:
In the fully open position, the disc rotates 90 degrees to align parallel with the flow direction. Fluid passes around both sides of the disc with minimal pressure drop — typically less than 5% of the gate valve equivalent.
The disc can be positioned at any angle between 0 and 90 degrees for flow regulation. This throttling capability makes butterfly valves suitable for balancing and flow control in HVAC and water distribution systems.
The disc rotates to perpendicular position and presses against the elastomer seat (nitrile/EPDM/Viton), creating a bubble-tight seal. The seat provides resilient sealing against the disc edge.
Full open to full close requires only 90 degrees of rotation — fast actuation for emergency shut-off. Lever handle provides visual open/closed indication. Gear operator available for larger sizes.
Wafer Type vs Lug Type Butterfly Valve
Butterfly valves are available in two primary body configurations — wafer type and lug type. The wafer type is the standard and most economical configuration for water treatment, HVAC, fire fighting, and general industrial applications where both pipeline flanges remain permanently connected. The lug type provides additional functionality for dead-end service but at a higher cost. Selecting between wafer and lug type is one of the first decisions a piping engineer or procurement team must make when specifying butterfly valves.
| Feature | Wafer Type Butterfly Valve | Lug Type Butterfly Valve |
|---|---|---|
| Installation | Clamped between two flanges — bolts pass through the valve body and connect both flanges simultaneously — compact and lightweight | Threaded lugs on each side — bolts connect independently to each flange — heavier and larger |
| Dead-End Service | ❌ Cannot be used for dead-end service — removing one pipeline requires draining and removing the valve first | ✅ One pipeline side can be removed without disturbing the other — allows dead-end service for maintenance |
| Weight | ✅ Lighter — no lugs, thinner body profile — lower shipping cost — easier handling during installation | Heavier — threaded lugs add significant weight — higher shipping cost |
| Cost | ✅ 30–40% lower than lug type — standard for most Indian water and HVAC projects | Higher — justified only when dead-end service or end-of-line isolation is required |
| Most Common Use | ✅ Water treatment, HVAC, fire fighting, industrial process — where both pipeline flanges remain connected | Chemical plants, petroleum, and applications requiring end-of-line shut-off or periodic pipeline removal |
| KELOR Standard Supply | ✅ Standard — supplied from verified vendors in CI body / S.G. iron disc with nitrile or EPDM seat | Available on request — specify lug type at time of enquiry |
For the majority of Indian water treatment, HVAC, and fire fighting applications, wafer type butterfly valve is the correct and most cost-effective specification. Only specify lug type when your piping system requires dead-end service (ability to remove one pipeline without draining the other side) or end-of-line shut-off capability. When in doubt, wafer type covers 90%+ of typical project requirements at significantly lower cost.
Technical Specifications
| Parameter | Specification |
|---|---|
| Product | Butterfly Valve — Wafer Type |
| Body Material | CI Body (Cast Iron — Grade FG 200 / FG 260 per IS 210) |
| Disc Material | S.G. Iron Disc (Ductile Iron — Grade SG 400/12 per IS 1865) |
| Stem Material | SS410 / SS316 |
| Seat Material | Nitrile (NBR) — standard — EPDM / Viton / PTFE on request |
| End Connection | Wafer Type — clamped between ASME B16.5 / DIN flanges |
| Pressure Rating | PN10 / 150# (approximately 10–16 bar depending on size and temperature) |
| Size Range | 2″ (DN50) to 12″ (DN300) |
| Operation | Lever handle (DN50–DN200) / Gear operated handwheel (DN250–DN300) |
| Design Standard | API 609 / IS 13094 |
| Face to Face | Per API 609 / IS 13094 |
| Testing Standard | API 598 — shell test and seat leakage test |
| Temperature Range | -10°C to +80°C (Nitrile seat) / -10°C to +120°C (EPDM seat) |
| MOQ | 10 Pieces |
| Supply Capacity | 2000+ pieces/month |
| HSN Code | 84818090 |
Seat Material Selection Guide
The seat material is the most critical selection after body material for butterfly valve specification. The seat provides the sealing interface between the disc and body, and its chemical compatibility, temperature resistance, and pressure rating determine whether the valve will perform reliably in your specific application. KELOR supplies CI body butterfly valves with four standard seat material options from verified vendor partners, each suited to different service conditions.
| Seat Material | Temperature Range | Best For | Not Suitable For |
|---|---|---|---|
| Nitrile (NBR) | -10°C to +80°C | ✅ Water, HVAC, general industrial service — standard seat — most economical — good oil resistance | Strong acids, oxidising agents, high temperature steam |
| EPDM | -10°C to +120°C | ✅ Potable water, fire fighting, hot water — excellent weather and ageing resistance — NBC 2016 compliant for fire water | Petroleum oils, fuels, hydrocarbons |
| Viton (FKM) | -10°C to +200°C | ✅ Chemical service — oils, fuels, aggressive solvents — high temperature process | Ketones, esters, amines, hot water/steam |
| PTFE | -30°C to +150°C | ✅ Aggressive chemical service — food-grade — near-universal chemical resistance — GMP pharma compatible | High pressure applications — PTFE has lower deformation resistance than NBR/EPDM |
The combination of Cast Iron body + S.G. Iron (Ductile Iron) disc is the industry standard for wafer butterfly valves in water, HVAC, and fire fighting applications. The CI body provides the mass, rigidity, and casting economy needed for the static pressure boundary. The S.G. Iron disc has significantly higher tensile strength (400+ MPa vs 200 MPa for CI), superior impact resistance, and ductility — preventing brittle fracture under hydraulic shock, water hammer, and repeated cycling. This material combination optimises both cost and performance for non-corrosive service applications.
Butterfly valves supplied by Krishna Industries (KELOR) conform to the following Indian and international standards:
- API 609 — Butterfly Valves: Double-offset and wafer type design and manufacture
- API 598 — Valve inspection and testing (shell test and seat leakage test)
- IS 13094 — Centrifugally cast iron butterfly valves for general purpose (Indian standard)
- IS 210 — Grey iron castings (CI body grade FG 200 / FG 260)
- IS 1865 — Spheroidal graphite (ductile) iron castings (S.G. iron disc grade SG 400/12)
- ASME B16.5 — Pipe flanges and flanged fittings (150# rating)
- ISO 5208 — Industrial valves — pressure testing of metallic valves
Standard Dimensions — Wafer Type Butterfly Valve
The following dimensions are per API 609 / IS 13094 standard for wafer type butterfly valves. All dimensions are in millimetres. These are reference dimensions for project piping design and material take-off. Certified dimension drawings available on request.
| Size (inch) | DN | Face to Face L (mm) | Flange OD D (mm) | Bolt Circle BC (mm) | Bolt Holes |
|---|---|---|---|---|---|
| 2″ | DN50 | 43 | 120 | 89 | 4 |
| 3″ | DN80 | 46 | 150 | 115 | 4 |
| 4″ | DN100 | 52 | 175 | 140 | 8 |
| 6″ | DN150 | 56 | 220 | 185 | 8 |
| 8″ | DN200 | 60 | 270 | 230 | 8 |
| 10″ | DN250 | 65 | 325 | 285 | 12 |
| 12″ | DN300 | 75 | 380 | 340 | 12 |
Applications in Indian Industries
The CI body butterfly valve with S.G. iron disc is one of the most widely specified flow control valves across Indian industries. Its compact wafer design, quarter-turn operation, low pressure drop, and economical cost make it the standard isolation and regulation valve for water supply, HVAC chilled and cooling water systems, fire fighting installations, and general industrial process piping. Below are the key application segments served by KELOR across India.
Flow Isolation and Regulation — CI body wafer butterfly valve with EPDM seat — 4″ to 12″ (DN100–DN300). Used as isolation valves on raw water intake, treated water mains, filter inlet/outlet, and distribution headers in municipal and industrial water treatment plants. The wafer design allows compact installation between flanges in space-constrained treatment plant galleries. EPDM seat ensures safe, non-contaminating sealing for potable water — meeting IS 13094 and NBC 2016 requirements for water supply systems. KELOR supplies water treatment butterfly valves to municipal corporations, JAL Jeevan Mission projects, and industrial EPC contractors across India.
Chilled and Cooling Water Isolation — CI body wafer butterfly valve with nitrile seat — 2″ to 8″ (DN50–DN200). The butterfly valve is the standard isolation valve on AHU (Air Handling Unit) connections, chiller evaporator and condenser water lines, cooling tower basin supply/return, and fan coil unit branch lines in commercial HVAC systems. The throttling capability allows flow balancing across zones without installing separate balancing valves. Compact wafer design fits in tight mechanical room spaces. KELOR supplies HVAC butterfly valves for commercial buildings, IT parks, hospitals, and mall projects across Ahmedabad, Mumbai, Delhi, Bangalore, and Hyderabad.
Fire Water Isolation — CI body wafer butterfly valve with EPDM seat — 4″ to 12″ (DN100–DN300). Butterfly valves are widely used as isolation valves on fire pump suction and discharge lines, sprinkler ring mains, hydrant system headers, and deluge valve assemblies. The CI body with EPDM seat is compliant with NBC 2016 requirements for fire water service. The quarter-turn operation allows fast actuation for emergency shut-off. KELOR supplies fire fighting butterfly valves with API 598 test certificates, hydro test reports, and documentation for fire NOC inspections.
Utility and Process Isolation — CI body wafer butterfly valve with nitrile or EPDM seat — 2″ to 12″. General industrial service including cooling water circuits, process water distribution, utility air lines, and non-corrosive fluid handling. The S.G. iron disc provides reliable cycling under industrial operating conditions. For chemical process service with corrosive media, specify SS304 or SS316 body butterfly valves instead of CI. KELOR serves chemical plants, pharmaceutical facilities, food processing units, and textile industries across Gujarat’s GIDC estates at Ankleshwar, Vapi, Nadiad, and Dahej.
Sea Water and Brine Service — CI body butterfly valve with appropriate seat material and protective coating for marine environments. Used on shipboard sea water cooling systems, coastal desalination plants, and port infrastructure. When paired with appropriate seat materials (EPDM or PTFE) and anti-corrosion coatings, the CI body butterfly valve with S.G. iron disc provides reliable service in marine water applications. Contact KELOR to specify correct coating and seat material for sea water service.
Canal and Pipeline Isolation — CI body wafer butterfly valve with nitrile or EPDM seat — 4″ to 12″. Used as isolation and flow control valves in irrigation canal systems, agricultural water distribution, and lift irrigation scheme pump discharge lines. The economical CI body with wafer design is the standard specification for government irrigation department projects and Jal Jeevan Mission rural water supply schemes. KELOR supplies irrigation butterfly valves with IS marking, MTC, and test certificates for government tender compliance.
Why Choose KELOR for Butterfly Valves?
Krishna Industries (KELOR) has been a trusted supplier of industrial valves, fasteners, gaskets and safety equipment to Indian process industries since 2017. We work with verified foundries to serve as your API 609 certified butterfly valve manufacturer for EPC India, ensuring every valve meets strict project specifications. Our Ahmedabad-based operations cover vendor verification, quality inspection, documentation management, and Pan India logistics.
API 598 shell test and seat leakage test performed. Mill Test Report 3.1 can be provided on request from verified vendors. Full material traceability maintained for every order.
GST invoice with E-Way bill. Dispatch from Ahmedabad warehouse within 5–10 working days. Express dispatch available for urgent project requirements and breakdown replacement.
WhatsApp size list and quantity — receive project pricing within 2 hours. Dedicated support for EPC contractors, MEP consultants, and government tenders.
API 598 test certificates, hydro test reports, MTC (EN 10204 Type 3.1), and GST invoice provided. Third-party inspection (TPI) coordination available on request.
Starting from ₹800/pc (DN50 nitrile seat). Bulk discount on 100+ pieces. Factory-direct vendor sourcing eliminates trader margins. Project-specific pricing for 20–500+ piece orders.
OEM logo, colour, and packaging available on bulk orders. Export-standard packing for international shipments. Supply capacity 2000+ pieces/month from verified vendor partners.
Commercial Information
KELOR offers factory-direct pricing on bulk orders. WhatsApp your size list and quantity to receive a competitive CI body SG iron disc butterfly valve price India within 2 hours, complete with full documentation support for your project tenders.
📲 Get Instant RFQ on WhatsApp
Send size list, quantity, and seat material preference — receive competitive project pricing within 2 hours with full documentation support.
WhatsApp NowRelated Products — Krishna Industries (KELOR)
People Also Ask
Krishna Industries (KELOR) supplies Butterfly Valves with CI Body and S.G. Iron Disc — wafer type — nitrile / EPDM / Viton / PTFE seat — PN10 / 150# — 2″ to 12″ (DN50–DN300) — lever and gear operated — API 609 / IS 13094 — API 598 tested — MTC — GST invoice — Pan India dispatch from Ahmedabad — supply capacity 2000+ pcs/month.
WhatsApp size list, seat material preference, and quantity for pricing within 2 hours. OEM logo and packaging available on bulk orders. The standard specification for water treatment, HVAC, fire fighting, and industrial butterfly valves in India.