Email: [email protected]
Phone: +91 93135 43530
Address: 133/1 Ground, Mansuri Block, Opp. Dudheshwar Water Tank, Ahmedabad-380004, Gujarat, India
Y Type Flush Bottom Valve Supplier India | SS316L / SS316 / WCB | Tank & Reactor Bottom Drain | Zero Dead Volume | Pharma / Food / Chemical | DN25–DN200 | KELOR
Supplier: Krishna Industries (KELOR) – Ahmedabad, Gujarat, India
Established: 2017 | GSTIN: 24AKLPP6499B1ZT | IEC: AKLPP6499B
MOQ: 10 Nos | Body: SS316L / SS316 / WCB / Hastelloy C276
Sizes: DN25–DN200 | Pressure: PN16 / PN25 | Applications: Pharma GMP / Food / Chemical Reactor
Y Type Flush Bottom Valve Supplier in India
Krishna Industries (KELOR), based in Ahmedabad, Gujarat, supplies Y Type Flush Bottom Valves — SS316L (ASTM A182 F316L / CF3M — pharma and food GMP) / SS316 (CF8M) / WCB / Hastelloy C276 body — ball plug / gate disc / diaphragm type — PTFE seat — flanged (ASME B16.5 / DIN PN16/PN25) / butt weld / socket weld / tri-clamp sanitary end connections — DN25 (1″) to DN200 (8″) — PN16 / PN25 — manual / pneumatic / electric actuated — GST invoice — MOQ 10 Nos — Pan India dispatch from Ahmedabad.
A Y Type Flush Bottom Valve is specifically designed for tank and reactor bottom drain and discharge service. The Y-body geometry allows the plug or disc to retract completely out of the flow path when open — the inner face of the valve sits flush (level) with the tank or vessel bottom. Furthermore, this eliminates the dead volume pocket that forms at the bottom of a standard bottom outlet ball valve, where product accumulates, cannot be drained, and creates hygiene, cross-contamination, and chemical waste problems. Consequently, the flush bottom valve is the standard specification for pharmaceutical API synthesis vessels, fermentation reactors, food processing tanks, and chemical reactors where complete tank bottom drainage is a process, GMP, or safety requirement.
Why Flush Bottom Design Is Critical — The Dead Volume Problem
| Feature | Y Type Flush Bottom Valve | Standard Bottom Outlet Ball Valve |
|---|---|---|
| When Valve Is Open | ✅ Plug retracts into Y-body — inner face flush with tank bottom — no cavity — complete product flow out of tank | Ball retracts into body cavity below tank bottom nozzle — creates a pocket below tank floor level |
| Dead Volume | ✅ Zero dead volume — no product retention at tank bottom when valve is open | Dead volume in ball body cavity — product remains in pocket — cannot drain by gravity |
| Complete Drainage | ✅ Tank drains to zero residual — complete batch discharge — no product loss | Residual product remains in body cavity after tank appears empty — product loss, batch contamination risk |
| GMP / Hygiene Compliance | ✅ No dead leg at tank bottom — WHO GMP, USFDA, EHEDG, 3-A compliant designs available — SS316L electropolished internal surface | Dead volume creates potential for microbial growth, cross-contamination between batches — not GMP compliant for pharma and food product contact |
| CIP / SIP Cleanability | ✅ Flush inner surface fully accessible to CIP/SIP cleaning fluids — no cavity to trap residue — standard for pharma and food GMP vessels | Body cavity may not be fully reached by CIP/SIP — residue trap — cleaning validation difficult |
| Specify When | ✅ All pharma API synthesis and formulation vessels — food processing tanks — chemical reactors requiring complete drainage — any tank where product loss or cross-contamination at drain point is not acceptable | General utility piping — non-critical tank drainage where residual volume is acceptable — cooling water, raw water utility tanks |
Body Material Selection
| Body Material | Standard | Specify For | Not For |
|---|---|---|---|
| SS316L | ASTM A182 F316L / A351 CF3M | ✅ Pharma GMP — API synthesis, fermentation, formulation, WFI systems — food processing GMP — low carbon (0.03% max) prevents sensitisation in welded vessel nozzle connections — electropolished internal surface (Ra 0.4 micron) available — USFDA, WHO GMP, EHEDG compliant | Highly corrosive chemical above SS316L resistance limit — specify Hastelloy |
| SS316 (CF8M) | ASTM A351 CF8M | ✅ Chemical plant reactor bottom drain — agrochemical reactor — corrosive chemical where low-carbon SS316L is not required — lower cost than SS316L for non-GMP chemical service | GMP pharma welded vessel connections where sensitisation documentation is required — specify SS316L |
| WCB Carbon Steel | ASTM A216 WCB | Non-corrosive chemical, slurry, general industrial reactor bottom drain — where SS body premium is not justified by service requirements | Corrosive chemical, pharma, food — WCB corrodes in these services |
| Hastelloy C276 | ASTM A494 CW12MW | Highly corrosive chemical beyond SS316L resistance — concentrated HCl, HF, mixed acid, oxidising acid, hypochlorite — where SS316L corrodes in service | Standard chemical and pharma service where SS316L is adequate — Hastelloy premium cost only justified for the most aggressive service |
Technical Specifications
| Parameter | Specification |
|---|---|
| Valve Type | Y-type flush bottom valve — ball plug / gate disc / diaphragm type |
| Body Material | SS316L (F316L / CF3M — GMP) / SS316 (CF8M) / WCB / Hastelloy C276 |
| Seat Material | PTFE (standard) / RPTFE / PEEK (high temp pharma) |
| Stem / Actuator Shaft | SS316L (standard) / SS316 |
| Internal Surface Finish | Standard mill finish / Ra 0.8 micron / Ra 0.4 micron electropolished (pharma GMP — on request) |
| End Connection | Flanged ASME B16.5 / DIN PN16/PN25 (standard) / Butt Weld (BW) / Socket Weld (SW) / Tri-clamp sanitary |
| Size Range | DN25 (1″) to DN200 (8″) |
| Pressure Rating | PN16 / PN25 |
| Temperature Range | -10°C to +180°C (PTFE seat) / -10°C to +250°C (PEEK seat) |
| Operation | Manual handwheel / Pneumatic actuated (spring return / double acting) / Electric actuated 220V AC |
| Design Standard | As per customer drawing / DIN 28758 / EHEDG / 3-A sanitary (on request) |
| Testing Standard | API 598 / EN 12266 hydrostatic test — helium leak test on request for pharma |
| MOQ | 10 Nos |
| HSN Code | 84818090 |
Applications in Indian Industries
Pharmaceutical API Synthesis — GMP Vessels
SS316L electropolished body — flanged ASME B16.5 or butt weld — DN50–DN150 — pneumatic actuated — API synthesis reactors, fermentation vessels, formulation tanks. Furthermore, the flush bottom design with zero dead volume is a USFDA and WHO GMP requirement for product-contact vessel drain valves — any dead volume at the reactor bottom is a potential cross-contamination point that must be justified or eliminated during GMP validation. Indian pharma API manufacturers at Hyderabad, Bengaluru, Ankleshwar, and Ahmedabad specify flush bottom valves as standard on all GMP production vessels.
Food and Beverage Processing
SS316L tri-clamp or flanged — DN25–DN100 — manual or pneumatic — mixing tanks, storage vessels, pasteuriser drain, juice processing tanks. EHEDG and 3-A sanitary compliance available for dairy, beverage, and food GMP applications. Moreover, the flush bottom design is mandatory in food GMP where residual product at the drain point creates microbial growth risk — standard for Indian dairy (Gujarat Cooperative Milk Marketing Federation dairy plants), beverage, and edible oil processing facilities.
Agrochemical and Chemical Reactor Bottom Drain
SS316 or Hastelloy C276 body — flanged DIN PN25 — DN50–DN200 — pneumatic actuated — agrochemical synthesis reactors, pesticide formulation vessels, dye and pigment reactors, acid process vessels. Complete reactor bottom drainage ensures full batch yield — residual product in standard ball valve body cavity represents both product loss and a hazardous chemical handling problem. Furthermore, Hastelloy C276 body for mixed acid, HCl, and hypochlorite service where SS316 is not resistant.
Fermentation and Biotech
SS316L electropolished — tri-clamp or butt weld — DN50–DN100 — pneumatic or electric actuated — bioreactor bottom harvest valves, culture medium drain, cell broth discharge. Zero dead volume mandatory for fermentation vessels where any product trapped in valve dead volume provides a site for contaminating microorganism growth between batch cycles.
Related Products — Krishna Industries (KELOR)
- Flush Bottom Ball Valve — standard flush bottom ball valve for tank bottom drain where Y-type configuration is not required by vessel design
- SS316 Butterfly Valve — for tank top and side nozzle isolation on the same pharma and chemical vessels
- SS Y Type Strainer — upstream particle protection on the same pharma and chemical process piping
- SS316 Gate Valve — process line isolation on the same GMP piping systems
- PTFE O-Ring — replacement PTFE seat and O-ring seals for flush bottom valve maintenance
Frequently Asked Questions
1. What is a Y Type Flush Bottom Valve and how does it differ from a standard ball valve?
A Y Type Flush Bottom Valve is specifically designed to mount at the bottom drain nozzle of a tank or reactor. The Y-shaped body geometry allows the ball plug or disc to retract completely into the Y-branch of the body when the valve is open — the inner valve face sits flush (level) with the inside of the tank bottom. There is no cavity below the tank floor level. A standard ball valve mounted at tank bottom has the ball body extending below the tank nozzle — when the ball is open, a pocket or cavity exists in the body below the tank floor level where product sits, cannot drain, and cannot be cleaned easily by CIP/SIP. For pharmaceutical, food, and chemical applications where complete tank drainage and GMP compliance are mandatory, the flush bottom valve is the correct specification. A standard ball valve is acceptable only for non-critical utility drainage.
2. Why is SS316L specified instead of SS316 for pharmaceutical vessels?
SS316L has a maximum carbon content of 0.03% compared to 0.08% for SS316. When welded to a vessel nozzle — as all flush bottom valves are in a pharma plant — the heat of welding can cause carbon to migrate to the grain boundaries in standard SS316, reducing chromium content locally and creating corrosion-susceptible zones (sensitisation). SS316L’s very low carbon content prevents sensitisation — the weld zone maintains full corrosion resistance after welding. Furthermore, USFDA and WHO GMP documentation for pharma production equipment specifically requires low-carbon 316L (or equivalent) for all product-contact welded connections. This is why Indian pharma API manufacturers specify F316L or CF3M flush bottom valves as standard.
3. What internal surface finish is required for pharmaceutical GMP applications?
Indian pharmaceutical API manufacturers typically specify Ra 0.8 micron (32 μin) for product-contact surfaces on non-sterile API production vessels, and Ra 0.4 micron (16 μin) electropolished for sterile product and WFI system vessel drain valves. The electropolished surface reduces surface roughness micro-peaks that can trap product and microbial contamination, and makes the surface easier to clean and validate. Standard mill finish (Ra 1.6–3.2 micron) is acceptable for non-product-contact utility service only. Specify the required Ra value and whether electropolishing is required at order stage — we supply with surface finish certification for GMP validation documentation.
4. What actuator should I specify — pneumatic or electric?
Specify pneumatic actuated (spring return) for reactor bottom drain valves where fail-safe closure on loss of instrument air is required — standard for Indian pharma and chemical plant reactor bottom valves where the safety instrumented system (SIS) requires the bottom drain to close automatically on process trip. Specify electric actuated for non-safety-critical tank bottom drain where 220V AC control from DCS or PLC is available and fail-safe position is not mandated by the SIS. Manual handwheel is acceptable for maintenance drain valves on utility tanks that are opened and closed infrequently by operators.
5. What is the MOQ?
MOQ is 10 Nos. Pharma and chemical plant vessel orders typically involve 5–50 flush bottom valves across vessel sizes — these can be supplied in a single consolidated order with one GST invoice and complete documentation package (MTC, hydrostatic test certificate, surface finish certificate, material traceability). WhatsApp body material, end connection, size, actuator type, internal finish requirement, and quantity for pricing within 2 hours.
Conclusion
Krishna Industries (KELOR) supplies Y Type Flush Bottom Valves for pharmaceutical GMP vessels, food processing tanks, chemical reactors, and fermentation vessels — SS316L (F316L / CF3M — electropolished available) / SS316 (CF8M) / WCB / Hastelloy C276 body — ball plug / gate disc / diaphragm — PTFE / PEEK seat — flanged / butt weld / socket weld / tri-clamp — DN25 (1″) to DN200 (8″) — PN16 / PN25 — manual / pneumatic / electric — zero dead volume — complete tank bottom drainage — GMP compliant — GST invoice — MOQ 10 Nos — Pan India dispatch from Ahmedabad. WhatsApp body material, end connection, size, and quantity for pricing within 2 hours.