ASME B16.5 / BS 5351 · Class 150 & 300 · WCB / SS304 / SS316
3 Piece Ball Valve Manufacturer in India | KELOR Valves
Premium 3 piece ball valve manufacturer and supplier from Ahmedabad, Gujarat. Available in WCB, SS304 (CF8), and SS316 (CF8M) body with PTFE/RPTFE seats. Flanged ASME B16.5 and screwed BSP/NPT ends, full and reduced bore, Class 150 and 300, DN15 to DN100. API 598 tested, fire-safe design, with rapid pan-India dispatch.
Quick Answer: As an API 6D certified 3 piece ball valve supplier, Krishna Industries (KELOR) supplies high-performance 3 piece ball valves in WCB, SS304, and SS316 bodies. Featuring flanged (Class 150/300) and screwed ends, PTFE/RPTFE seats, and DN15–DN100 sizing. MOQ is 10 Nos with 3–5 day dispatch from our Ahmedabad facility. Request a quote on WhatsApp.
Industrial 3 Piece Ball Valve Supplier: Product Overview
A 3 piece ball valve is a quarter-turn shut-off valve consisting of three separate body sections: two end pieces that connect to the pipeline and a centre body housing the ball, seats, and stem assembly. The centre body is bolted between the end pieces and can be removed for in-line inspection, cleaning, or seat replacement while both end connections remain firmly attached to the pipeline. This design provides the critical operational advantage of in-line maintenance, eliminating the need to break flange joints, replace gaskets, or perform hydrostatic re-testing of disturbed connections during routine maintenance.
The In-Line Maintenance Advantage
The defining engineering advantage of a 3 piece ball valve over 1-piece and 2-piece designs is true in-line serviceability. In corrosive chemical, GMP pharmaceutical, or food-grade CIP circuits where maintenance frequency is high, the 3 piece design translates to significantly reduced downtime, lower maintenance labour costs, and minimized contamination risk. The premium cost of the 3 piece body is typically recovered within the first 1–2 maintenance cycles through eliminated flange work and reduced shutdown time.
| Feature | 3 Piece Ball Valve | 2 Piece Ball Valve |
|---|---|---|
| In-Line Maintenance | Centre body slides out; both end connections remain in pipeline. Zero pipeline disturbance. | Body cap removal disturbs one connection; partial pipeline disruption required. |
| Seat Replacement | PTFE seats replaced in-line without breaking pipeline joints. | Valve partially removed; one joint broken; gasket replaced. |
| Downtime | Shortest. Standard for critical process lines where minimizing shutdown is a priority. | Moderate. One joint work required. |
| Best For | Chemical, pharma, food process, corrosive service, frequent maintenance cycles. | General utility, moderate maintenance frequency. |
Procurement Tip for EPC Contractors
As preferred 3 piece ball valve manufacturers for EPC contractors, we recommend specifying a 3 piece design over 2-piece when the process line carries corrosive media requiring frequent seat inspection, or when GMP/pharma regulations require documented in-line maintainability. For non-critical utility lines, 2-piece ball valves offer adequate performance at a lower cost.
Technical Specifications & Materials
Component-Wise Material Breakdown
Selecting the correct body material for your 3 piece ball valve is the most critical specification decision. Below is the standard component-wise material breakdown used in KELOR manufacturing, ensuring full traceability and compliance with international standards.
| Component | Standard Material | Optional / Upgraded Material |
|---|---|---|
| Body & End Pieces | ASTM A351 CF8 (SS304) / CF8M (SS316) / A216 WCB | Duplex, Super Duplex, Hastelloy |
| Ball | ASTM A351 CF8M (SS316) / Chrome Plated CS | SS316L, Inconel, Tungsten Coated |
| Stem | ASTM A351 CF8M (SS316) / SS410 | SS316L, Inconel (Blowout-Proof) |
| Seat Ring | PTFE / RPTFE | PEEK, TFM, Graphite (Fire-Safe) |
| Body / Stem Seals | PTFE / RPTFE | Graphite (Fire-Safe) |
| Fasteners (Stud/Nut) | ASTM A193 B8 / A194 8 | ASTM A193 B7 / A194 2H |
Flanged vs Screwed 3 Piece Ball Valve Connections
Flanged end 3 piece ball valves use ASME B16.5 raised face (RF) flanges bolted to the valve body end pieces. This configuration is the standard specification for process plant piping operating at Class 150 and Class 300 pressure ratings. Flanged connections allow the 3 piece in-line maintenance advantage to be fully utilized.
Screwed end 3 piece ball valves use BSP or NPT threads for connection to threaded pipe or fittings. They are compact, economical, and quick to install, making them the standard choice for smaller bore utility lines, instrument root valves, and sample points (typically DN40 and below).
Standard Dimensions & Pressure Ratings
| Parameter | Specification |
|---|---|
| Valve Type | 3 piece ball valve — full bore / reduced bore |
| End Connection | Flanged (ASME B16.5 Class 150/300 RF) / Screwed (BSP/NPT) / Socket Weld |
| Size Range | DN15 (1/2″) to DN100 (4″) |
| Pressure Class | Class 150 (approx. 20 bar) / Class 300 (approx. 50 bar) / 800# (Screwed) |
| Temperature Range | -20°C to +180°C (PTFE) / -20°C to +200°C (RPTFE) / up to +450°C (Graphite) |
| Testing Standard | API 598 / BS 6755 — shell test and seat leakage test |
| Design Standards | ASME B16.5 / ASME B16.10 / BS 5351 / API 6D / ISO 17292 |
| Safety Features | Fire-Safe Design, Blowout-Proof Stem, Anti-Static Device |
| HSN Code | 84818090 |
Why Choose KELOR 3 Piece Ball Valves?
Engineered for Reliability & Compliance
- API 598 Tested: Every valve undergoes rigorous shell and seat leakage testing before dispatch.
- Fire-Safe & Anti-Static: Optional graphite seals and anti-static devices ensure safety in hazardous oil, gas, and chemical environments.
- Blowout-Proof Stem: Internally designed stem prevents ejection under extreme pressure surges.
- Full Documentation: Material Test Certificates (MTC 3.1), inspection reports, and warranty provided with every batch.
- Fast Dispatch: In-house manufacturing in Ahmedabad ensures 3–5 day dispatch for standard sizes.
Applications Across Gujarat & Pan India
Key Industries Served
Chemical Plants
Corrosive Process Isolation: SS316 CF8M body 3 piece ball valves for corrosive chemical process lines where frequent seat maintenance is expected. Serving GIDC estates in Ankleshwar, Vapi, Nadiad, and Dahej across Gujarat.
Pharmaceutical Utility Piping
GMP-Compliant Isolation: SS316 CF8M body valves for purified water (PW), WFI, and clean steam utility isolation. In-line maintenance allows seat replacement without breaking flanged joints, reducing contamination risk.
Food & Beverage Processing
CIP Line Isolation: SS316 CF8M body valves for food process line isolation and clean-in-place (CIP) circuit block valves. PTFE seats are food-safe and CIP chemical compatible.
Industrial Process & Water
Steam & Utility Isolation: WCB body 3 piece ball valves for steam utility isolation, non-corrosive process line block valves, and DM/RO plant circuit isolation.
Frequently Asked Questions
What is the main difference between a 2-piece and 3-piece ball valve?
Can a 3-piece ball valve be repaired inline without removing the body?
What is the maximum pressure and temperature rating for a 3-piece ball valve?
What materials (SS316, WCB, Alloy 20) are best for 3-piece valves in chemical plants?
What are the standard end connections (flanged, threaded, butt weld) for 3-piece ball valves?
How do I specify a 3-piece ball valve for high-pressure steam applications?
What certifications (API, ISO, ASME, IBR) should I verify in an Indian valve manufacturer?
What is the typical manufacturing lead time for bulk 3-piece ball valve orders in India?
How does the total lifecycle cost of a 3-piece ball valve compare to a 2-piece valve?
What is the difference between floating ball and trunnion mounted 3-piece ball valves?
Related Standards & Guides
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API 598 tested · MTC 3.1 on request · Pan India dispatch · Contact us for a 3 piece stainless steel ball valve manufacturer price list.
- ✓ API / ASME Standards
- ✓ WCB / SS304 / SS316
- ✓ Flanged & Screwed Ends
- ✓ 3–5 Day Dispatch