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Cast Iron Ball Valve — Three Piece Flanged End | Krishna Industries, Ahmedabad
B2B supplier of Cast Iron Three Piece Ball Valves with Flanged End — CI body — SS316 ball — PTFE seat — Class 150 ANSI B16.5 — DN15 to DN100 — BS 5351 / API 598 — 3-piece in-line maintenance design.
GST Invoice · API 598 Test Certificate · MOQ 10 Nos · Pan India Dispatch
A Cast Iron Three Piece Ball Valve with Flanged End is a quarter-turn isolation valve — CI body — stainless steel ball — PTFE seat — flanged ANSI B16.5 Class 150 end connection — 3-piece body construction allowing the centre section with ball and seats to be removed for in-line maintenance without cutting any pipeline connection.
Krishna Industries (KELOR), based in Ahmedabad, Gujarat, supplies CI Three Piece Flanged Ball Valves for water supply, HVAC utility, ETP/STP, compressed air, and general non-corrosive industrial service — where the lower cost of CI body is a budget consideration and the operating conditions are within CI pressure and temperature limits. GST invoice. MOQ 10 Nos. Pan India dispatch from Ahmedabad.
⚠️ Before Specifying CI Body — Read This: Cast Iron ball valves exist but are NOT the standard industrial ball valve specification. Standard industrial ball valves use WCB (carbon steel) or SS304/SS316 body. CI body has a lower pressure rating than WCB at equivalent class, is brittle under thermal shock (rapid temperature change), and cannot be used for steam, condensate, or hot/cold cycling service. CI body is acceptable only for ambient temperature water, HVAC utility, and compressed air service where budget is the primary consideration. If your service involves oil, steam, elevated temperature, or thermal cycling — specify WCB or SS body instead. See the comparison below or WhatsApp for material recommendation.
CI Body vs WCB Body vs SS316 Body — Which to Specify
✅ CI Body (This Page)
- Most economical — 15–20% below WCB
- Ambient temperature water and HVAC
- ETP / STP utility service
- Compressed air (ambient temp)
- Class 150# ≈ 13.8 bar at ambient
- Not for: Steam, thermal shock, oil, elevated temperature
✅ WCB Body (Standard)
- Standard industrial — oil, gas, steam, non-corrosive process
- Higher pressure rating than CI at same class
- Class 150# ≈ 19.6 bar at ambient
- Handles thermal shock
- Flanged, screwed, SW, BW options
- See: WCB Flanged Ball Valve
✅ SS316 Body (Corrosive)
- Corrosive chemical, chloride, pharma, food GMP
- Potable water, DM water, seawater
- No iron contamination risk
- Full SS316 body, ball, and stem
- See: SS316 Flanged Ball Valve
Technical Specifications — CI Three Piece Flanged Ball Valve
| Parameter | Specification |
|---|---|
| Body Material | Cast Iron (CI) — ASTM A126 Grade B / IS 210 FG260 |
| Ball Material | SS316 (standard) / SS304 |
| Seat Material | PTFE (virgin) — Class VI zero leakage |
| Stem Material | SS316 — blow-out proof |
| Body Design | 3-piece — full bore — in-line maintenance |
| End Connection | Flanged ANSI B16.5 Class 150 — Raised Face (RF) standard |
| Size Range | DN15 (½”) to DN100 (4″) |
| Pressure Class | Class 150# (ANSI B16.5) — approximately 13.8 bar at ambient for CI body |
| Temperature Range | Ambient service only — 0°C to +65°C recommended for CI body — do not use for thermal shock or steam service |
| Bore Type | Full bore (standard) |
| Operation | Lever handle (DN15–DN50 standard) / Gear operated (DN65–DN100) |
| Face to Face | ANSI B16.10 |
| Design Standard | BS 5351 |
| Testing Standard | API 598 — hydrostatic shell test + seat leakage test |
| MOQ | 10 Nos |
| HSN Code | 84818090 |
Why 3-Piece Body — The In-Line Maintenance Advantage
The 3-piece body is the key advantage of this valve over a standard 2-piece flanged ball valve. The centre body with ball and PTFE seats slides out while both flanged end connections remain bolted to the pipeline. Furthermore, this allows seat replacement and ball inspection without breaking either flange joint, without disturbing pipe alignment, and without replacing flange gaskets. For flanged connections where gasket replacement is time-consuming and costly, 3-piece in-line maintenance reduces valve maintenance downtime significantly.
| Feature | 3-Piece Body (This Page) | 2-Piece Body |
|---|---|---|
| In-Line Seat Replacement | ✅ Centre body slides out — both flanges stay bolted — no gasket disturbance | Downstream flange must be unbolted — gasket replaced — retorqued |
| Maintenance Time | ✅ Shorter — no flange joint disturbance | Longer — flange joint work required |
| Cost | Slightly higher — 3 body components | ✅ Lower — 2 body components |
| Specify When | ✅ Flanged connections in critical lines where in-line seat maintenance reduces downtime cost | General service — infrequent maintenance — cost-sensitive |
Applications — Where CI Three Piece Flanged Ball Valve Is Specified
- Water Treatment Plants (WTP / ETP / STP): Utility water isolation at ambient temperature — pump suction and discharge isolation, chemical dosing line block valves, treated water distribution isolation — where CI body is acceptable and cost is a driver
- HVAC Systems: Chilled water and condenser water circuit isolation — plant room utility lines — where SS316 body is not required and ambient water temperature is within CI service limits
- Compressed Air Utility Lines: Ambient temperature instrument air and service air isolation — where the air is dry and non-lubricated and CI body corrosion is not a concern
- Municipal Water Distribution: Bulk water supply distribution — pump station and distribution network isolation — large volume orders where CI body cost advantage over WCB is significant for project budget
- Industrial Cooling Water: Non-treated cooling water at ambient temperature — where water quality does not attack CI and temperature does not cause thermal shock
Service Limitations — Do Not Specify CI Body For:
- ⛔ Steam or hot condensate service — CI cracks under thermal shock — specify WCB or SS for steam
- ⛔ Oil, diesel, or petroleum products — CI is not recommended for hydrocarbon service — specify WCB with NBR seat
- ⛔ Corrosive chemical — CI corrodes rapidly in acid, alkali, chloride — specify SS316 CF8M body
- ⛔ Potable water above 65°C or DM water — CI contamination risk — specify SS body for no-contamination service
- ⛔ High pressure above 13.8 bar — CI Class 150# is rated lower than WCB Class 150# — specify WCB for higher pressure service
Related Products — If CI Body Is Not Suitable for Your Service
- WCB Flanged Ball Valve Carbon steel — higher pressure — oil gas steam
- SS316 Flanged Ball Valve CF8M — corrosive chemical pharma food
- Three Piece Ball Valve — All Grades WCB SS304 SS316 screwed and flanged
- Ball Valve Hub — Complete Range All types materials and configurations
- CI Butterfly Valve CI body EPDM/NBR seat — more economical for large bore water isolation
Why Industrial Buyers Choose Krishna Industries
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B2B Supplier Since 2017
Sourced from verified Indian manufacturers. Consistent quality and competitive pricing across all ball valve grades.
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GST Invoice & Test Certificate
100% GST invoice (GSTIN: 24AKLPP6499B1ZT). API 598 hydrostatic test certificate and seat leakage certificate with every order.
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API 598 Tested
Shell pressure test and seat leakage test per API 598 — Class VI zero leakage confirmed before dispatch.
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MOQ 10 Nos
Minimum 10 Nos per size. Project and bulk orders 50–500+ Nos — single GST invoice for complete BOM.
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Pan India Dispatch
Dispatching from Ahmedabad via VRL / Professional Courier to Maharashtra, Tamil Nadu, Rajasthan, and all Indian states.
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2-Hour Quote
WhatsApp size list and quantity. Pricing within 2 hours. Mon–Sat 9 AM–7 PM IST.
Need Bulk Pricing for CI Three Piece Flanged Ball Valve?
WhatsApp size (DN15–DN100), quantity, and delivery location. If unsure whether CI body is correct for your service, share the fluid and temperature — we advise within 2 hours.
📲 WhatsApp for Bulk PriceFrequently Asked Questions
What is a cast iron three piece ball valve and how does it differ from a standard ball valve?
A cast iron three piece ball valve has a CI body split into three sections — two flanged end pieces and a centre body containing the ball and seats. The three-piece design allows the centre body to slide out for seat and ball replacement while both flanged ends remain bolted to the pipeline. A standard 2-piece ball valve requires the downstream flange to be unbolted for seat access. Furthermore, CI body distinguishes it from the standard industrial WCB (carbon steel) or SS316 body ball valve — CI is specified only where the lower cost is a driver and service conditions are within CI body limits (ambient temperature, non-corrosive, non-thermal shock service).
Can a cast iron ball valve be used for steam service?
No — cast iron body ball valves must not be used for steam service or any service involving rapid temperature change (thermal shock). CI is a brittle material — it does not have the ductility of carbon steel (WCB) or stainless steel to absorb thermal stresses from rapid heating or cooling. When a CI valve is exposed to steam or hot condensate followed by cold water, or vice versa, the thermal shock can crack the CI body — creating a dangerous sudden valve failure. For steam, hot condensate, or any service with thermal cycling, specify WCB body ball valve (for carbon steel piping) or SS316 body (for stainless steel piping).
What is the pressure rating of a Class 150 CI ball valve?
A Cast Iron body ball valve at Class 150# (ANSI B16.5) is rated approximately 13.8 bar (200 psi) at ambient temperature. This is lower than a WCB (carbon steel) Class 150# ball valve which is rated approximately 19.6 bar (285 psi) at ambient. The lower pressure rating of CI at the same class is due to CI’s lower tensile strength compared to carbon steel. For applications where operating pressure exceeds 13.8 bar, specify WCB body Class 150# or upgrade to Class 300. Always confirm the exact pressure-temperature rating from ANSI B16.5 tables for CI material before specifying.
Is a CI three piece ball valve suitable for potable water?
CI body ball valves can be used on potable water supply systems in non-critical utility applications — but with a caveat. Cast iron corrodes slowly in water, particularly if the water has low alkalinity or is slightly acidic. Over time, iron corrosion products can contaminate the water. For potable water supply where zero iron contamination is required (pharmaceutical water, food and beverage plant utility water, hospital water), specify SS304 or SS316 body ball valve. For municipal raw water distribution where some iron content is acceptable and the valve is in a distribution main (not a final point-of-use), CI body is commonly used in India as an economical option.
What is the MOQ and documentation provided?
MOQ is 10 Nos. Every order includes GST invoice (GSTIN: 24AKLPP6499B1ZT), API 598 hydrostatic shell test certificate, and seat leakage test certificate confirming Class VI zero leakage. MTC for ball and seat materials available on request. WhatsApp size (DN15–DN100), quantity, and delivery location for pricing within 2 hours.