Stainless Steel Food Grade Sanitary Pneumatic Butterfly Valve with Limit Switch
The Sanitary Pneumatic Butterfly Valve with Limit Switch is engineered for precision control in hygienic processing systems.
Why Engineers Specify This Item
- Designed to meet AS, BS, DIN, and SMS specifications, this valve is ideal for pharmaceutical and food-grade applications requiring sterile fluid handling.
- Constructed from 304/316L stainless steel, it ensures corrosion resistance and compliance with FDA, 3A, and CE standards.
- The quick-release clamp design enables effortless disassembly for cleaning, while the integrated limit switch provides real-time valve position feedback for automated systems.
- Its bubble-tight sealing and pneumatic actuation guarantee reliable performance in high-purity environments.
What It Prevents
- Seats that harden after repeated hot CIP and start weeping across the disc
- Handles that creep open under line vibration and let product bypass a closed branch
- Powder lines where a standard liquid seat packs solid and jams the disc
Technical Data
Figures below are the catalogue range for this item. Exact dimensions are confirmed in writing against the standard you work to before production.
| Material | SS 304 or SS 316L for option |
|---|---|
| Media | Water, oil, milk, beverage, sanitary fluid etc |
| Connection | Butt-Welded, Thread, Clamped, Flange |
| Size Range | 1"-6" |
| Pressure | 0-20Bar |
| Working Temperature | -20 C to 120 C |
| Standard | AS, BS, 3A, DIN, SMS, ISO |
| Gasket | EPDM/SILICON/PTFE/VITON |
| Certification | 3A, FDA, CE Ball Valve Catalog |
Materials
- SS 304
- SS 316L
Manufacturing Process
- Machining
- Forming and welding
- Interior polishing
- Assembly
- Quality inspection
Quality Control
- Dimensional check against the standard stated on the order
- Surface finish verified against the specified Ra figure
- Visual and leak inspection before packing
- Material certificates to EN 10204 3.1 available on request
Where It Is Installed
- Tank bottom discharge on a mixing vessel
- Branch isolation on a CIP supply and return header
- Diverting flow between two filling heads
- Powder discharge under a silo cone
Who Buys It
- Skid builders who need a short face-to-face valve where there is no room for a ball valve
- Dairy and beverage plants running frequent hot caustic cleaning cycles
- Powder handling lines discharging from silos and tank bottoms
What It Is Built To
- 3A
- FDA
- CE Ball Valve Catalog
What We Can Change
- Non-standard sizes made to your dimensions
- Special connection types and mixed-standard ends
- Customised surface finish down to Ra 0.4 um
- Seal material selected for your media and CIP cycle
How It Compares
Compared with Sanitary Ball Valves
Specify the Stainless Steel Food Grade Sanitary Pneumatic Butterfly Valve with Limit Switch where the duty is what this category is built for: compact on-off isolation for hygienic pipework, from a hand lever on a 1 inch transfer line to a pneumatic actuator on a tank outlet. Move to sanitary ball valves instead where the requirement is full bore shut-off where the line must drain clean and the pressure drop has to stay near zero, including 3-way and 4-way diverting bodies.
Compared with Sanitary Diaphragm Valves
Specify the Stainless Steel Food Grade Sanitary Pneumatic Butterfly Valve with Limit Switch where the duty is what this category is built for: compact on-off isolation for hygienic pipework, from a hand lever on a 1 inch transfer line to a pneumatic actuator on a tank outlet. Move to sanitary diaphragm valves instead where the requirement is the valve to use when the actuation mechanism must be completely isolated from the product, for high purity water, media and sterile transfer.
Compared with A general industrial equivalent
An industrial-grade part of the same nominal size is usually cheaper and carries no declared hygienic surface finish, no crevice-free joint geometry and no material certificate. On a product contact line that difference shows up at the first swab test, not on the purchase order.
Installing and Living With It
Bring the two ferrule faces square before closing the clamp. Fit the gasket dry and seated in the groove, then tighten the clamp evenly; overtightening extrudes the gasket into the bore.
Purge the bore with inert gas before welding and keep heat input low so the heat affected zone does not discolour. Polish the internal weld to the finish specified for the rest of the line.
Do not use tape or sealant on a hygienic union thread. The seal is made by the gasket at the liner seat, not by the thread, so check the gasket is seated before tightening the nut.
Align the flange faces parallel before drawing the bolts up, and tighten opposite pairs in stages so the gasket is loaded evenly across the face.
Keep the duty inside the stated working temperature range of -20 C to 120 C. Running a CIP cycle hotter than the seal material allows is the most common cause of early failure on this item.
Do not exceed the 0-20Bar working pressure. Where the line sees pressure pulsation, specify a heavy duty or bolted clamp at the joints either side.
Record the standard, size, material and seal material fitted, so the replacement ordered in two years matches what is installed today.
Others in the Butterfly Valves Range
Sanitary Stainless Steel Sanitary Flange Valve | Food Grade
Stainless Steel Sanitary Threaded 3-Way Butterfly Valve | Manual
Sanitary Stainless Steel Flange End Butterfly Valve | Round Handle
Sanitary Tri-Clamp Butterfly Valves with Plastic Handle
Guides That Cover This Item
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Related Capability
Stainless Steel Food Grade Sanitary Pneumatic Butterfly Valve with Limit Switch FAQ
What we are asked before this item is ordered.
What sizes is the Stainless Steel Food Grade Sanitary Pneumatic Butterfly Valve with Limit Switch available in
The catalogue range is 1"-6". Dimensions follow the AS, BS, 3A, DIN, SMS, ISO standards. Confirm the tube outside diameter and wall thickness you work to when you enquire and we will match the exact dimensions before production.
Which material should I specify for the Stainless Steel Food Grade Sanitary Pneumatic Butterfly Valve with Limit Switch
Material options are SS 304 or SS 316L. Choose 316L where chlorides are present or where the item will be welded into a line that has to be validated; 304 is adequate for neutral product and standard caustic CIP. Material certificates to EN 10204 3.1 are available on request.
Which seal material suits my cleaning cycle
The Stainless Steel Food Grade Sanitary Pneumatic Butterfly Valve with Limit Switch is supplied with EPDM/SILICON/PTFE/VITON sealing options. EPDM is the default for hot water and caustic CIP, silicone for high temperature steam contact, PTFE for aggressive chemicals and Viton for oils and fats. Tell us the media and the peak CIP temperature and we will specify it on the order.
What is the lead time and minimum order for this item
Standard catalogue items such as the Stainless Steel Food Grade Sanitary Pneumatic Butterfly Valve with Limit Switch are typically 7-15 days, and small quantity orders of standard items are accepted. Custom sizes, special connections and bulk quantities are quoted with a confirmed date before production starts.
Quote the Stainless Steel Food Grade Sanitary Pneumatic Butterfly Valve with Limit Switch
Send the size, media, working pressure, temperature and the standard you work to. We confirm dimensions, material and finish in writing before quoting.