Butterfly Valve CI Body S.G. Iron Disc Supplier India — Wafer Type PN10/150# | KELOR

Butterfly Valve CI Body / S.G. Iron Disc Supplier in India — Wafer Type PN10 / 150# | KELOR

Krishna Industries (KELOR), based in Ahmedabad, Gujarat, supplies Butterfly Valves with CI Body and S.G. Iron Disc — wafer type design — 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.

💰 CI Butterfly Valve with S.G. Iron Disc starting from ₹800/piece (DN50 Nitrile Seat) — Bulk discount on 100+ pcs. WhatsApp for project pricing.

⚡ Quick Reference

SupplierKrishna Industries (KELOR) — Ahmedabad, Gujarat

Body MaterialCI (Cast Iron)

Disc MaterialS.G. Iron (Ductile Iron)

End ConnectionWafer Type

Seat (Standard)Nitrile (NBR)

RatingPN10 / 150#

Size Range2″ to 12″ (DN50–DN300)

MOQ10 Pieces

Butterfly Valve — CI Body / S.G. Iron Disc

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. The compact wafer design allows for easy installation between flanges, making it a preferred choice for water treatment, HVAC, fire fighting, and general industrial applications 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. With supply capacity of 2000+ pieces per month, KELOR serves 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.

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:

Disc Parallel to Flow (Open)

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.

Throttling Position (Partial)

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.

Disc Perpendicular to Flow (Closed)

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.

Quarter-Turn Operation

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

💡 Procurement Tip

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

💡 Why CI Body + S.G. Iron Disc?

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.

📖 Applicable Standards

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

⚠️ Note: Dimensions are reference values per API 609 / IS 13094. Actual vendor dimensions may vary slightly. Contact KELOR for certified vendor-specific dimension drawings. The most commonly ordered sizes for Indian projects are 2″ (DN50), 4″ (DN100), 6″ (DN150), and 8″ (DN200).

Nitrile Seat (NBR)Standard — Water, HVAC

EPDM SeatPotable Water, Fire Fighting

Viton Seat (FKM)Chemical, Oil, Fuel

PTFE SeatAggressive Chemical, Food

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.

💧 Water Treatment Plants

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.

🏥 HVAC Systems

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 Fighting Systems

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.

⚙ Industrial Process Plants

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.

🌐 Marine and Sea Water

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.

🏗 Irrigation and Agriculture

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. Our Ahmedabad-based operations cover vendor verification, quality inspection, documentation management, and Pan India logistics — ensuring every butterfly valve we supply meets project specification and documentation requirements.

✅

Quality Verified

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.

🚚

Pan India Dispatch

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.

📧

Fast Quotation

WhatsApp size list and quantity — receive project pricing within 2 hours. Dedicated support for EPC contractors, MEP consultants, and government tenders.

📋

Full Documentation

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.

💰

Competitive Pricing

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 Available

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

📈 Order & Supply Details

MOQ 10 pieces per order

Payment Terms 100% Against Purchase Order

Dispatch 5–10 working days

Invoicing GST invoice with E-Way bill

Documentation MTC 3.1, API 598 test certificate

Inspection Third-party inspection (TPI) available

Bulk Orders 100–500+ pcs with project pricing

HSN Code 84818090

📧 Get Instant RFQ on WhatsApp

Send size list, quantity, and seat material preference — receive competitive project pricing within 2 hours with full documentation support.

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Frequently Asked Questions

1. What is the difference between wafer type and lug type butterfly valve?

Wafer type butterfly valves are clamped between two flanges using long bolts that pass through the valve body — lighter, more compact, and more economical. Lug type butterfly valves have threaded lugs on each side that allow bolts to connect independently to each flange — enabling dead-end service (one pipeline side can be removed without affecting the other). For water treatment, HVAC, and general industrial service, wafer type is the standard and most cost-effective choice.

2. What is S.G. Iron disc and why is it used instead of CI disc?

S.G. Iron (Spheroidal Graphite Iron, also called Ductile Iron) disc has significantly higher tensile strength (400+ MPa) and impact resistance compared to Cast Iron (CI). The ductile nature of S.G. Iron prevents brittle fracture under hydraulic shock, water hammer, and repeated cycling. While CI body provides the mass and rigidity needed for the pressure boundary, the S.G. Iron disc provides the strength and toughness needed for the moving component — this CI body + S.G. Iron disc combination is the industry standard for wafer butterfly valves in water, HVAC, and fire fighting applications.

3. What seat materials are available for CI butterfly valves?

Nitrile (NBR) is the standard seat for water, HVAC, and general service — temperature range -10°C to +80°C. EPDM is specified for potable water, fire fighting, and higher temperature service up to +120°C. Viton (FKM) is specified for chemical resistance against oils, fuels, and aggressive solvents up to +200°C. PTFE is specified for aggressive chemical service and food-grade applications up to +150°C. Contact KELOR to specify the correct seat material for your process fluid.

4. What is the MOQ for butterfly valves from KELOR?

MOQ is 10 pieces. Project orders for water treatment, HVAC, and fire fighting systems typically range 20 to 500+ pieces across sizes. API 609 test certificate, Mill Test Report 3.1 can be provided on request from verified vendors, and GST invoice provided with every order. WhatsApp size list and quantity for project pricing within 2 hours.

5. What sizes are available for CI butterfly valves?

Standard size range is 2″ (DN50) to 12″ (DN300) for CI body wafer butterfly valves with S.G. iron disc. The most commonly ordered sizes for Indian projects are 2″ (DN50), 4″ (DN100), 6″ (DN150), and 8″ (DN200). Sizes 10″ (DN250) and 12″ (DN300) are used in main water supply lines and fire fighting ring mains. Contact KELOR for availability of specific sizes and current stock position.

6. Can CI butterfly valves be used for fire fighting applications?

Yes — CI body butterfly valves with EPDM seat are widely specified for fire fighting systems in India. They are used as isolation valves on fire pump suction and discharge lines, sprinkler ring mains, and hydrant systems. The CI body with EPDM seat is NBC 2016 compliant for fire water service. KELOR supplies fire fighting butterfly valves with API 598 test certificates, hydro test reports, and documentation for fire NOC inspections and insurance audits.

7. Do you offer OEM customization?

Yes — OEM logo, colour, and packaging can be arranged on bulk orders from verified vendor partners. Custom branding with your company logo on the valve handle and body nameplate is available. Export-standard packing with individual box or pallet packing can be arranged for international shipments. Contact KELOR with your specific OEM requirements at the time of enquiry.

8. Can it be used for marine / sea water applications?

Yes — CI body butterfly valves with S.G. iron disc can be used for marine and sea water applications when paired with appropriate seat materials and protective coatings. EPDM or PTFE seats provide the chemical resistance needed for saline water. Epoxy or fusion-bonded epoxy (FBE) coating on the CI body prevents corrosion in marine environments. Contact KELOR to specify the correct seat material and coating for your specific sea water application.

9. What is the delivery time?

Standard delivery is 5–10 working days depending on order size and size mix. For common sizes (2″, 4″, 6″, 8″) with nitrile seat, faster dispatch is possible from ready stock. Project orders of 100–500+ pieces may require 10–15 working days depending on size distribution and seat material. Express dispatch available for urgent breakdown requirements. Pan India dispatch via road transport with GST invoice and E-Way bill.

10. Can I get test certificates?

Yes — API 598 test certificates (shell test and seat leakage test) can be provided on request from verified vendors. Mill Test Report (MTC) per EN 10204 Type 3.1 can be provided on request. Hydro test reports, material certificates for CI body (IS 210) and S.G. iron disc (IS 1865), and third-party inspection (TPI) reports can be arranged for project-specific documentation requirements. Specify your documentation needs at the time of enquiry.

11. What is the return policy?

Defect-free replacement within 7 days of delivery. If the valve is found to have manufacturing defects, material defects, or fails the API 598 test upon receipt, KELOR will coordinate replacement with the vendor partner at no additional cost. Returns must be reported within 7 days of delivery with photographic evidence of the defect. Contact KELOR immediately upon receipt of any non-conforming product.

12. Do you offer samples?

Yes — samples are available for evaluation and project approval. Freight for sample shipment is to be paid by the buyer. For project approval requirements where sample valve testing is mandated by the consultant or project owner, KELOR can arrange sample dispatch with full test documentation. Contact us with your sample size and seat material requirement.

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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.