The Stainless Steel Pneumatic Tank Bottom Discharge Valve is a sanitary-grade valve engineered for controlled fluid discharge at the base of process tanks and storage vessels. Built from SS304 or SS316L stainless steel, it combines pneumatic actuation with a hygienic body design to support automated fluid management in clean process environments.
This valve is widely used in industries where contamination-free discharge, easy cleaning, and integration with automated control systems are required. Its dead-zone-free internal design supports CIP (Clean-In-Place) and SIP (Sterilize-In-Place) protocols, meeting FDA and GMP compliance standards.
KONTE is an established pneumatic tank bottom valve manufacturer and exporter with over 10 years of experience supplying industrial and sanitary valves to more than 60 countries. Our production is backed by Kangsaite Automation Group, with 100,000+ m² of manufacturing space and 500+ CNC machines.
▶ Integrally Forged Flange & Precision Cast Elbow
The flange is integrally forged, and the elbow is precisely cast as one piece. This eliminates weld seams in high-stress zones, improving structural integrity and resistance to fatigue under cyclic pressure loads.
▶ Double-Seal Design
The double-seal configuration provides two independent sealing barriers. This extends service life and reduces leak risk in demanding or high-frequency process environments.
▶ 360° Rotatable Outlet
The outlet can be rotated 360° for flexible installation. This reduces the need for additional elbow fittings and simplifies piping layout in space-constrained systems.
▶ Seamless Internal Surface
The internal surface is polished to Ra ≤ 0.4μm. This finish prevents media retention, supports CIP/SIP cleaning cycles, and satisfies FDA, GMP, and EHEDG hygiene requirements.
▶ Tri-Clamp Connection
The Tri-Clamp connection design allows fast, tool-free disassembly. This minimizes maintenance downtime and is a standard requirement in pharmaceutical and food-grade piping systems.
▶ Smooth Internal Flow Path
The unobstructed bore handles viscous, sticky, or particle-laden media without blocking. It is suitable for sauces, fermentation broths, dairy concentrates, and similar fluids.
▶ Optional Locking Mechanism
A locking device is available to secure the valve in the open or closed position. This is practical for safety-critical operations where unintended actuation must be prevented.
▶ Optional C-Top Intelligent Controller
The valve can be equipped with a C-Top positioner with one or two proximity switches. This enables real-time position feedback and direct integration with PLC, DCS, or SCADA automation systems.
| Parameter | Specification |
|---|---|
| Size Range | 1" – 4" |
| Valve Body Material | SS304 / SS316L |
| Sealing Material | EPDM, Silicone (SI), FKM |
| Working Pressure | ≤ 0.8 MPa |
| Connection Types | Welding, Tri-Clamp, Threaded, Flanged |
| Internal Surface Finish | Ra ≤ 0.4μm |
| External Surface Finish | Ra ≤ 0.6μm |
| Max Operating Temperature | 150°C |
| Air Supply Pressure | 0.4 – 0.6 MPa |
| Air Pipe Connection | R1/8" |
| Optional Accessory | C-Top controller with 1 or 2 proximity switches |
| SIZE | d (mm) | D (mm) | K (mm) | L (mm) | H1 (mm) | D1 (mm) | D2 (mm) | A (mm) | H (mm) |
|---|---|---|---|---|---|---|---|---|---|
| 1" | 22.4 | 25.4 | 50.5 | 107 | 86 | 100 | 94 | 86 | 363 |
| 1.5" | 35.1 | 38.1 | 50.5 | 67 | 80 | 100 | 94 | 86 | 363 |
| 2" | 47.8 | 50.8 | 64 | 89 | 100 | 115 | 105 | 86 | 391 |
| 2.5" | 59.5 | 63.5 | 77.5 | 100 | 118 | 150 | 140 | 86 | 453 |
| 3" | 72.2 | 76.2 | 91 | 113 | 131 | 170 | 160 | 108 | 500 |
| 3.5" | 84.9 | 88.9 | 106 | 125 | 148 | 185 | 175 | 133 | 537 |
| 4" | 97.6 | 101.6 | 119 | 148 | 180 | 200 | 190 | 133 | 578 |
The stainless steel pneumatic bottom discharge valve serves industries where hygienic fluid control and automated tank emptying are required.
Food & Beverage Processing
Used in dairy tanks, juice blending vessels, sauce batch tanks, and brewery fermentation systems. The smooth bore and FDA-compliant seals support product safety and comply with food-grade hygiene standards.
Pharmaceutical Manufacturing
Applied in GMP-certified reactor vessels, mixing tanks, and sterile fluid transfer systems. The Ra ≤ 0.4μm surface and Tri-Clamp connection meet standard pharmaceutical process requirements.
Biotechnology & Fermentation
Suitable for bioreactors and fermentation tanks handling cell cultures, enzyme solutions, and biological broths. The low dead-volume design prevents media carryover between batches.
Chemical Processing
FKM sealing options allow use with mild corrosive media, solvents, and chemical concentrates at working temperatures up to 150°C.
Cosmetics & Personal Care
Used in cream, lotion, and shampoo production tanks where hygienic discharge and complete vessel emptying are process requirements.
This valve is compatible with automated production lines and can be integrated with control systems via the optional C-Top intelligent positioner.
KONTE is a wholesale pneumatic sanitary valve supplier and OEM/ODM factory with export coverage across 60+ countries and 800+ active global partners.
Certified Quality Control
All valves undergo 100% hydrostatic pressure testing and air tightness inspection before shipment. Inspection records and test data are retained for over 10 years. Products comply with ISO 9001, CE, FDA, and API598 standards.
Custom OEM/ODM Capability
We accept custom valve configurations including special sealing compounds, actuator types, surface finish grades, and non-standard connection dimensions. Bulk supply and private-label programs are available for distributors, brand owners, and project contractors.
Global Warehousing Network
With 15 overseas warehouses in the USA, Spain, Malaysia, Australia, Brazil, Turkey, Thailand, and Russia, KONTE supports short lead times and reduced logistics costs for buyers worldwide.
Fast Quotation & After-Sales Support
Quotations are provided within 24 hours. Post-sale complaints are acknowledged within 8 working hours, with full resolution delivered within 24 hours. Emergency cases receive a 4-hour response. All valves carry a 12-month warranty from shipment or 18-month warranty from installation.
Q1: What is a pneumatic tank bottom discharge valve?
It is a valve mounted at the base of a process tank, controlled by compressed air to open or close the tank outlet. It allows automated discharge of liquid, semi-liquid, or viscous media during production cycles.
Q2: What is the difference between SS304 and SS316L for this valve?
SS304 covers most general-purpose sanitary applications. SS316L contains molybdenum, which provides higher corrosion resistance in chloride-containing media, acidic environments, and pharmaceutical-grade processes. SS316L is the recommended choice for CIP/SIP systems.
Q3: Is this valve compatible with CIP and SIP cleaning systems?
Yes. The internal surface finish of Ra ≤ 0.4μm and the dead-zone-free internal flow path are specifically designed to support CIP and SIP operations up to 150°C.
Q4: Can the sealing material be customized? Yes. Standard sealing options are EPDM, Silicone, and FKM. Other elastomers can be evaluated based on specific media compatibility and temperature requirements. Contact our technical team to confirm material suitability.
Q5: What connection standards are available?
Welding, Tri-Clamp, Threaded, and Flanged connections are all available. Tri-Clamp is the preferred option for sanitary applications due to its tool-free disassembly and compliance with DIN 32676, ISO 2852, and BS4825 standards.
Q6: Does KONTE support OEM/ODM and private label orders?
Yes. We provide OEM and ODM services for distributors, brand owners, importers, and project contractors. Custom labeling, product markings, and technical documentation can be arranged on request.
Q7: What is the minimum order quantity?
MOQ varies by product configuration and customization level. We support both small batch orders for trial purchases and large-volume wholesale orders. Contact our sales team for MOQ and pricing details.
