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Zero Dead Volume Tank Drain Valve for Pharma, Biotech, and Reactor Service
This datasheet covers flush bottom tank valves in SS316 with disc flush to vessel bottom for zero dead volume drainage in reactor, CIP/SIP tank, biotech fermentation, and pharmaceutical API recovery applications.
| Parameter | Specification |
|---|---|
| Valve Size Range | DN50 to DN200 (2" to 8") |
| Pressure Rating | PN16 / Class 150 |
| Body Material | CF8M (SS316) with flush bottom profile machined to vessel dish radius |
| Disc Material | SS316 disc with PTFE/EPDM/PFA seal matched to dish radius |
| Seat Material | Integral SS316 lapped seat, Ra 0.8 µm finish |
| Stem Material | SS316 rising stem with ACME threads and thrust bearing |
| Bonnet Material | CF8M (SS316) bolted or clamped bonnet |
| Packing | PTFE/graphite packing with live-loading gland; EPDM for sanitary service |
| Gaskets | Food-grade PTFE or EPDM gaskets for flange joints |
| Temperature Range | -10°C to +180°C (PTFE seal); +250°C with PEEK |
| End Connections | Flanged ASME B16.5 / BS EN 1092-1, tri-clamp, or weld-end to vessel |
| Actuation | Manual handwheel standard; pneumatic cylinder or diaphragm actuator optional |
| Features | Zero dead volume, dip pipe compatible, CIP/SIP, pneumatic option, custom dish radius |
| Component | Material |
|---|---|
| Body | CF8M (SS316) cast stainless steel with flush bottom profile machined to match vessel dish radius within ±1 mm |
| Disc | SS316 disc with PTFE/EPDM/PFA seal profile matched to dish radius for zero-gap seating |
| Seat | Integral SS316 seat, lapped to Ra 0.8 µm finish for bubble-tight shutoff and easy cleaning |
| Stem | SS316 rising stem with precision ACME threads, anti-blow-out collar, and handwheel thrust bearing |
| Bonnet | CF8M (SS316) bolted or clamped bonnet with packing chamber and actuator mounting pad |
| Packing | PTFE/graphite V-ring packing with live-loading; food-grade EPDM for sanitary and CIP/SIP service |
| Gaskets | Food-grade PTFE or EPDM gaskets; tri-clamp ferrule gaskets per DIN 32676 or ISO 2852 |
| Test | Requirement |
|---|---|
| Test Standard | API 598 / ISO 5208 / hydrostatic 1.5x PN |
| Certification | CE, PED, ISO 9001, FDA, 3A, EHEDG on request |
| Standard | Description |
|---|---|
| Design Standard | ASME B16.34 / 3A Sanitary Standard / EHEDG |
The Flush Bottom Tank Valve -- Disc Type SS316 is designed, manufactured, and tested in accordance with applicable API / ASME / BS / ISO international standards. Compliance documentation and Material Test Certificates (EN 10204 3.1) are provided with every order.
Standard construction is carbon steel, stainless steel (CF8 / CF8M), and special alloy grades. Alternative and upgraded grades -- Duplex, Super Duplex, Inconel, Monel, Hastelloy, and NACE MR0175 trims for sour service -- are available on request.
It is offered in a range of sizes as per the technical specification with standard ANSI / ASME pressure classes (PN ratings on request). End connections include flanged (RF / RTJ), butt-weld, socket-weld, and screwed ends as per specification.
Yes. Supreme Valves India is an established exporter of industrial valves to Saudi Arabia (KSA), the UAE, Qatar, Kuwait, Oman, Bahrain, and across the Gulf. We provide sea-worthy export packing, EN 10204 3.1 / 3.2 certification, certificate of origin, and support for SABER / SASO conformity on KSA shipments.
Every valve undergoes hydrostatic shell and seat testing per API 598 / ISO 5208. Documentation includes EN 10204 3.1 MTC (3.2 on request), NDT reports, and fire-safe (API 607) or NACE MR0175 certification where applicable. Third-party inspection by TÜV, SGS, Bureau Veritas, or Lloyd's Register can be arranged.
Order quantities are flexible -- from single units for stocked items to bulk volumes for project requirements. Lead time depends on size, material, and quantity; please contact our team with your specification for a firm delivery schedule and quotation.