Cast Iron Wafer Butterfly Valve — Supplier India | KELOR
Krishna Industries (KELOR), based in Ahmedabad, Gujarat, supplies Cast Iron Wafer Butterfly Valves — CI Disc from ₹375/Piece, SS304 Disc from ₹570/Piece — PN10 / PN16 — DN40 to DN600 — EPDM / NBR / PTFE / Viton seat — BS 5155 / IS 13095 — Lever / Gear / Actuator operated — MOQ 10 Pcs — Ready Stock DN40 to DN150 — Pan India dispatch from Ahmedabad.
GST invoice with HSN 8481 80 90 for all butterfly valve dispatches. WhatsApp specifications for pricing within 2 hours during business hours.
⚡ Quick Reference
📜 On This Page
- What Is a Cast Iron Wafer Butterfly Valve?
- Price List — CI Disc and SS304 Disc
- CI Disc vs SS304 Disc — Selection Guide
- Seat Material Selection — EPDM, NBR, PTFE, Viton
- Technical Specifications
- Dimensions and Operating Torque
- Wafer Type vs Lug Type — Selection Guide
- Applications Across Indian Industries
- How to Order
- Why Choose KELOR
- Related Products
- Frequently Asked Questions
What Is a Cast Iron Wafer Butterfly Valve?
A cast iron wafer butterfly valve is a quarter-turn rotary valve designed for flow control and isolation in industrial piping systems. The valve uses a circular disc mounted on a central shaft (stem) that rotates 90 degrees to move from the fully open position (disc parallel to flow, 0 degrees) to the fully closed position (disc perpendicular to flow, 90 degrees). In a concentric butterfly valve, the disc centreline aligns with the body centreline, and the seat is a resilient elastomeric liner (EPDM, NBR, PTFE, or Viton) bonded or inserted into the body bore. When the disc closes, it compresses against the seat liner to provide a bubble-tight seal.
The wafer design means the valve body has no independent flanges. Instead, the valve is installed by clamping it between two pipe flanges using long bolts that pass through both flanges on either side of the valve body. This makes the wafer butterfly valve the most compact and lightweight butterfly valve type, with face-to-face dimensions as short as 43 mm for DN40 (compared to several hundred millimetres for a flanged gate valve of the same size). The cast iron body conforms to IS 210 Gr. FG 200 (equivalent to BS 1452 Grade 200), providing mechanical strength and rigidity for industrial service at pressures up to PN10 (10 bar at ambient temperature) and PN16 (16 bar) on request.
KELOR supplies cast iron wafer butterfly valves designed and constructed to BS 5155 and IS 13095 standards, with flange drilling compatibility for ASME B16.5, IS 1538, and DIN PN10/PN16 flanges. Disc options include cast iron (the most economical), SG iron (ductile iron for higher strength), SS304 (CF8 for corrosion resistance), and SS316 (on request). The standard seat is EPDM for water and HVAC service, with NBR, PTFE, and Viton available for oil, chemical, and high-temperature applications. Operation options include lever handle (DN40 to DN150), worm gear (DN150 and above, and on request for smaller sizes), pneumatic actuator (double-acting or spring-return), and electric motor operated valve (MOV).
Price List — CI Disc and SS304 Disc
Indicative supplier prices for standard cast iron body wafer butterfly valves — lever operated, EPDM seat, PN10, as per BS 5155 / IS 13095. All prices are ex-Ahmedabad warehouse. Bulk project pricing (50+ pieces per size) available on request.
| Size (DN) | NB (Inch) | CI Disc (₹/Pc) | SS304 Disc (₹/Pc) | Stock Status |
|---|---|---|---|---|
| DN40 | 1½″ | ₹375 | ₹570 | Ready Stock |
| DN50 | 2″ | ₹500 | ₹760 | Ready Stock |
| DN65 | 2½″ | ₹625 | ₹950 | Ready Stock |
| DN80 | 3″ | ₹750 | ₹1,140 | Ready Stock |
| DN100 | 4″ | ₹1,000 | ₹1,520 | Ready Stock |
| DN125 | 5″ | ₹1,250 | ₹1,900 | Ready Stock |
| DN150 | 6″ | ₹1,500 | ₹2,280 | Ready Stock |
| DN200 | 8″ | On Request | On Request | 7 Working Days |
| DN250 | 10″ | On Request | On Request | 7–10 Working Days |
| DN300 | 12″ | On Request | On Request | 10 Working Days |
| DN400 | 16″ | On Request | On Request | 10–15 Working Days |
| DN600 | 24″ | On Request | On Request | 15–20 Working Days |
⚠ Price Variance Factors
Prices above are indicative for lever operated, EPDM seat, PN10, ex-Ahmedabad warehouse, standard packing. Price varies for: gear operated (DN150 and above), NBR or PTFE seat material (plus or minus 10 to 15 percent), PN16 pressure rating, SG Iron (ductile iron) or SS316 disc, pneumatic or electric actuator operation, and bulk quantity orders (50+ pieces qualify for special pricing). WhatsApp +91 93135 43530 with size, disc material, seat material, and quantity for confirmed price within 2 hours during business hours.
CI Disc vs SS304 Disc — Selection Guide
The most common specification question for butterfly valve selection is whether to choose a cast iron disc or an SS304 disc. In both cases, the valve body is cast iron. The disc material determines the corrosion resistance for the flowing fluid because the disc is the component that contacts the media during both the open and closed positions. When the valve is closed, the disc edge presses into the seat liner, and any corrosive action on the disc surface directly affects seat life and sealing performance.
| Feature | CI Disc (FG 200) | SS304 Disc (CF8) |
|---|---|---|
| Material | IS 210 Gr. FG 200 Grey Cast Iron | AISI 304 / ASTM A351 CF8 Stainless Steel |
| Price (DN100) | ₹1,000 per piece — most economical option | ₹1,520 per piece — approximately 52% premium over CI disc |
| Corrosion Resistance | Standard — suitable for clean, non-corrosive water and neutral fluids | Good — resists mild corrosion from treated water, slightly saline conditions, and dilute chemicals |
| Media Suitability | Cold and hot water, HVAC chilled and heating water, compressed air, fire fighting water — non-corrosive clean service only | Water with suspended solids, mildly saline water, dilute acids and alkalis, wastewater, food-grade water lines |
| Sea or Coastal Water | Not suitable — CI disc corrodes rapidly in saline or brackish water environments | Marginal — SS304 is susceptible to pitting in seawater above 150 ppm chloride concentration — specify SS316 for marine service |
| Seat Compatibility | EPDM (standard), NBR, PTFE | EPDM (standard), NBR, PTFE, Viton |
| Best Applications | HVAC building services, fire fighting networks, municipal water distribution, general cooling water, compressed air, clean process water — the majority of Indian projects | Wastewater treatment, mildly chemical service, food and dairy water lines, urban water supply with treated water, slightly corrosive process water |
💡 Quick Selection Rule
For clean, non-corrosive water and air (HVAC, fire fighting, municipal supply, building services): specify CI disc — the most economical choice that covers the majority of Indian industrial and commercial applications. For corrosive or mildly aggressive media (wastewater, chemical process, food-grade water, slightly saline water): specify SS304 disc — the corrosion resistance justifies the price premium. For seawater or heavily chlorinated environments: specify SS316 disc (available on request) or consider a full stainless steel body butterfly valve.
Seat Material Selection — EPDM, NBR, PTFE, Viton
The seat (also called the liner) is the elastomeric or PTFE component that provides the sealing interface between the disc and the body. It contacts the flowing fluid continuously and must be selected based on media compatibility, temperature range, and chemical resistance. Incorrect seat selection is the most common cause of premature butterfly valve failure — an EPDM seat in oil service swells within hours, while an NBR seat in hot HVAC water hardens and cracks within weeks.
| Seat | Temp Range | Specify For | Avoid |
|---|---|---|---|
| EPDM (Standard) | -10°C to +120°C | Water supply, HVAC chilled water, condenser water, hot water heating, potable water, fire fighting, dilute acids and alkalis — the default seat for most Indian projects covering water and HVAC | Petroleum products, oils, fuels, hydrocarbons — EPDM swells rapidly and loses sealing ability in oil environments |
| NBR (Nitrile) | -10°C to +80°C | Oil service, petroleum products, compressed air with oil carry-over, diesel, LPG lines, fuel handling systems | Hot water above 80°C, steam, HVAC cooling water with biocide treatment — NBR degrades in these conditions |
| PTFE (Teflon) | -20°C to +180°C | Chemical process, concentrated acids and alkalis, solvents, pharmaceutical and food GMP, high-temperature steam lines, chlorine water, demineralised water | Heavy abrasive slurries — PTFE is soft and abrades under solid particle impact |
| Viton (FKM) | -20°C to +180°C | Aggressive organic chemicals, aromatic solvents, chlorinated compounds, high-temperature oil service, chlorine and chlorine compound environments | Ketones, amines, and some polar solvents — verify chemical compatibility before specifying Viton |
Technical Specifications
| Parameter | Specification |
|---|---|
| Valve Type | Concentric (Centric) Wafer Type Butterfly Valve |
| Body Material | Cast Iron IS 210 Gr. FG 200 (Grey Cast Iron) |
| Disc Material | Cast Iron (FG 200) / SG Iron (Ductile Iron) / SS304 (CF8) / SS316 — specify on order |
| Seat / Liner | EPDM (standard) / NBR / PTFE / Viton (FKM) |
| Stem / Shaft | SS410 (standard) / SS316 (on request) |
| Design Standard | BS 5155 / IS 13095 / API 609 |
| Pressure Rating | PN10 (standard) / PN16 (on request) |
| Size Range | DN40 to DN600 (1½″ to 24″) |
| End Connection | Wafer Type — clamped between flanges (ASME B16.5 / IS 1538 / DIN flange compatible) |
| Face-to-Face | Per BS 5155 short pattern |
| Operation | Lever (DN40–DN150) / Gear (DN150 and above) / Pneumatic / Electric actuator on request |
| Temperature Range | -10°C to +120°C (EPDM) / -10°C to +80°C (NBR) / -20°C to +180°C (PTFE) |
| Flow Direction | Bi-directional (both directions) |
| Painting | Shot blast + red oxide primer (standard) / Epoxy coat on request |
| HSN Code | 8481 80 90 |
Dimensions and Operating Torque — DN40 to DN600
Face-to-face dimensions per BS 5155 short pattern. Operating torque values shown for EPDM seat at 10 bar differential pressure. Gear operation is recommended from DN150 upwards for comfortable manual actuation by a single operator.
| DN | Inch | F2F (mm) | Torque (Nm) | Operation | Weight (kg) |
|---|---|---|---|---|---|
| DN40 | 1½″ | 43 | 8 | Lever | 1.2 |
| DN50 | 2″ | 43 | 10 | Lever | 1.5 |
| DN65 | 2½″ | 46 | 14 | Lever | 2.0 |
| DN80 | 3″ | 46 | 18 | Lever | 2.8 |
| DN100 | 4″ | 52 | 25 | Lever | 4.0 |
| DN125 | 5″ | 56 | 35 | Lever | 5.5 |
| DN150 | 6″ | 56 | 50 | Lever / Gear | 7.5 |
| DN200 | 8″ | 60 | 80 | Gear | 12.0 |
| DN250 | 10″ | 68 | 125 | Gear | 18.0 |
| DN300 | 12″ | 78 | 175 | Gear | 26.0 |
| DN400 | 16″ | 102 | 310 | Gear | 45.0 |
| DN600 | 24″ | 127 | 680 | Gear | 95.0 |
Wafer Type vs Lug Type — Selection Guide
When selecting a butterfly valve end connection, the two primary options are wafer type (the standard and most common design) and lug type (threaded body inserts for dead-end service). The choice depends on whether the valve needs to retain downstream piping when one flange is removed. The following comparison covers the key technical and practical differences.
| Feature | Wafer Type | Lug Type |
|---|---|---|
| Installation | Clamped between two flanges — long bolts pass alongside the valve body, not through it. Both pipeline flanges must be connected and bolted together. | Threaded lugs on the valve body receive individual bolts that connect the valve directly to each adjacent flange. Each side is independently bolted. |
| Dead-End Service | Cannot be used — removing the downstream flange also removes the valve from the pipeline. Both flanges must always be present. | Suitable — the valve can be bolted to one flange only, allowing the downstream piping to be removed independently while the valve stays in the line. |
| Cost | Lower — simpler body casting without machined lug inserts, lighter weight, fewer bolts required. | Higher — machined lug inserts in the body increase material and machining cost, typically 20 to 30 percent above wafer price. |
| Weight | Lighter — compact body without lug material. | Heavier — lug material adds to body mass. |
| Flange Bolt Load | Bolt load must pass through the valve, so bolt length must span the full valve width plus both flanges. | Shorter bolts — each bolt threads into the valve lug and only spans one flange thickness. |
| Best For | All standard pipeline applications where both flanges are always present — the most common butterfly valve type for HVAC, water, fire fighting, and general process service. | Pump connections, filter isolation, equipment maintenance access, tank outlet connections, and any installation where downstream piping must be removable. |
Applications Across Indian Industries
Fire Fighting Systems
CI disc and EPDM seat for fire pump discharge, hydrant mains, deluge headers, and sprinkler zone valves. PN10 is standard for most fire system pressure ratings. The quarter-turn operation enables rapid isolation during emergency response.
HVAC and Building Services
CI or SS304 disc and EPDM seat for chilled water AHU connections, cooling tower loops, condenser water circuits, and hot water heating mains. The compact wafer profile fits in tight mechanical room spaces.
Water Treatment Plants
SS304 disc and EPDM seat for municipal WTP pump discharge, filter isolation, sludge lines, and distribution main sectionalising. Bi-directional flow capability simplifies piping layout.
Chemical and Process Plants
SS304 disc and PTFE seat for dilute chemical process lines, effluent treatment, and mildly corrosive process water. The quarter-turn operation provides fast opening and closing for batch process control.
EPC and Infrastructure
Bulk supply for government water supply projects, sewage treatment, irrigation canal structures, and industrial estate infrastructure. Project BOM orders with multiple sizes and specifications supplied together.
Sugar and Distillery
CI or SS304 disc for process water, cooling water, and utility lines in sugar mills and ethanol distilleries at elevated process temperatures. PTFE seat available for higher temperature ranges.
Power Plants
Cooling water pump discharge, auxiliary service water systems, and utility line isolation in thermal power plant balance of plant areas. Gear-operated variants for DN200 and above.
Commercial Buildings
CI disc and EPDM for high-rise chilled water and domestic water riser isolation, hotel and hospital HVAC systems, and institutional complexes. Economical CI disc for non-corrosive building services.
How to Order
⚡ For Confirmed Price and Delivery Within 2 Hours, Share:
- Size — DN (mm) or NB (inches) — e.g., DN100 or 4″
- Disc material — CI (standard, lower price) or SS304 / SS316
- Seat material — EPDM (standard) / NBR / PTFE / Viton
- Pressure rating — PN10 (standard) or PN16
- Operation — Lever (standard DN40–DN150) / Gear / Pneumatic / Electric
- End type — Wafer (standard) or Lug
- Quantity (Pieces)
- Flange drilling — ASME B16.5 / IS 1538 / DIN PN10 / PN16
- Delivery location
WhatsApp: +91 93135 43530 | Email: [email protected]
Why Choose KELOR
Industrial Valves, Fasteners, Gaskets and Safety Equipment
KELOR sources and supplies a comprehensive range of industrial products — butterfly valves, gate valves, check valves, ball valves, solenoid valves, gaskets, fasteners, and safety equipment — from verified vendors under one roof.
Ready Stock — Fast Dispatch
DN40 to DN150 in CI disc with EPDM seat maintained in ready stock at the Ahmedabad warehouse. Dispatch within 2 to 3 working days of confirmed order and advance payment. Express dispatch for urgent project requirements.
Transparent Pricing — From ₹375/Piece
Published price list with CI disc starting from ₹375 per piece (DN40). Bulk project pricing, OEM blanket rates, and annual contract pricing available. GST invoice under HSN 8481 80 90 provided with every dispatch.
MOQ 10 Pieces, Project BOM Orders Welcome
Minimum order quantity of 10 pieces per size and specification for standard lever-operated valves. Project BOM orders combining multiple sizes and variants are supplied together with one GST invoice.
2-Hour Quote During Business Hours
WhatsApp your specifications — size, disc material, seat material, pressure rating, operation, and quantity — and receive confirmed pricing and delivery within 2 business hours.
Dedicated Sales Support for Every Order
From enquiry to delivery, KELOR provides single-point contact for order tracking, documentation, and after-sales support. Email communication and WhatsApp updates keep you informed at every stage.
Related Products from KELOR
Get Cast Iron Butterfly Valve Price — 2-Hour Response
CI Disc from ₹375 — SS304 Disc from ₹570 — DN40–DN600 — EPDM / NBR / PTFE — PN10 / PN16 — OEM Bulk — GST Invoice — Ready Stock DN40–DN150 — Pan India Dispatch
💬 WhatsApp for Price ✉ Email EnquiryFrequently Asked Questions
Krishna Industries (KELOR) supplies Cast Iron Wafer Butterfly Valves from Ahmedabad, Gujarat — CI Disc from ₹375/Piece, SS304 Disc from ₹570/Piece — PN10 / PN16 — DN40 to DN600 — EPDM / NBR / PTFE / Viton seat — BS 5155 / IS 13095 — MOQ 10 Pcs — Ready Stock DN40 to DN150 — Pan India dispatch with GST-compliant documentation. WhatsApp specifications for pricing within 2 hours during business hours.