Sanitary Manual Butterfly Valve Weld End Mod.SIG/79

Key Features

• Butt-Weld End Connection – Designed for permanent welding directly into the pipeline, creating a seamless, crevice-free joint that eliminates mechanical failure points

• Manual Multi-Position Handle – 12-position spring-loaded lockable handle (stainless steel) allows precise flow control and secure position locking

• Sanitary Mirror Finish – All wetted surfaces are polished to ≤ 32Ra (0.8μm) , preventing bacterial adhesion and ensuring superior cleanability

• High-Quality Materials – Available in 304 and 316L stainless steel body and disc, offering exceptional corrosion resistance and durability

• FDA-Approved Seals – Available seal materials include Silicone, EPDM, and Viton (FPM) , all FDA-compliant for food and pharmaceutical contact

• Interchangeable Actuation – Manual handle, pneumatic actuator, and electric actuator are fully interchangeable on the same valve body

• Opposing Body Bolt Design – Prevents loosening between body sections due to vibration and operation, ensuring positive sealing

• Wide Size Range – Available from 1/2" to 12" (DN10 to DN300) to suit diverse system requirements

• 100% Tested – Every valve undergoes rigorous testing before shipment to ensure performance and reliability

Key Advantages

• Ultimate Hygienic Integrity – Welded connection eliminates gaskets and mechanical joints, providing the highest level of contamination prevention for critical applications

• Permanent, Maintenance-Free Connection – Weld-end design delivers unmatched mechanical strength, withstanding high pressures and temperatures without risk of loosening or leakage over time

• Superior Cleanability – Mirror-polished bore and crevice-free design fully support CIP (Clean-In-Place) and SIP (Sterilize-In-Place) procedures

• Precise Flow Control – Multi-position lockable handle enables accurate flow regulation with secure position locking for process consistency

• Versatile Applications – Suitable for food processing, beverage production, dairy, pharmaceutical, biotech, cosmetics, and chemical industries

• Flexible Upgrade Path – Interchangeable actuation design allows easy conversion from manual to pneumatic or electric operation as process needs evolve

• Low Flow Resistance – Mirror-polished disc provides even flow preventing obstructions and restrictions

• Long Service Life – Premium stainless steel construction and FDA-approved seals ensure exceptional durability under repeated sanitization cycles

How It Works

The Sanitary Manual Butterfly Valve Weld End Mod.SIG/79 operates on a simple quarter-turn principle:

1. Permanent Installation – The valve is butt-welded directly into the pipeline at both ends, becoming a permanent, integral part of the sanitary piping system

2. Flow Control – A rotary disc inside the valve body regulates or shuts off flow by rotating 90 degrees-. When the disc is parallel to the flow direction, the valve is fully open; when perpendicular, it is fully closed

3. Manual Operation – The multi-position stainless steel handle is rotated to adjust the disc position. The spring-loaded locking mechanism secures the handle at the desired position

4. Sealing – The FDA-approved seal (EPDM, Silicone, or Viton) creates a tight seal between the disc and valve body, preventing leakage when closed

5. Hygienic Operation – The mirror-polished interior prevents product buildup and bacterial growth, ensuring sanitary flow throughout the process

6. Easy Upgradability – The manual handle can be removed and replaced with a pneumatic or electric actuator without removing the valve from the pipeline

Why Choose Us

• Certified Quality – All our SIG/79 Sanitary Manual Butterfly Valves are 3A Sanitary Standards certified, meeting the highest industry requirements for dairy and food processing equipment. We also hold CE certification and ISO 9001 quality management system certification, ensuring consistent product excellence

• Premium Materials – We use only high-grade 304 and 316L stainless steel sourced from certified mills, offering exceptional corrosion resistance, weldability, and longevity

• Precision Manufacturing – CNC one-time machining ensures machining precision and consistent quality across all valve components

• Superior Surface Finish – All wetted surfaces are polished to ≤ 32Ra (0.8μm) , meeting or exceeding 3A and ASME BPE standards

• FDA-Compliant Seals – We use only FDA-certified seal materials imported from Europe, including EPDM, Silicone, and Viton (FPM)

• Stringent Quality Control – Every valve undergoes 100% inspection and testing to ensure dimensional accuracy, surface finish quality, and performance reliability

• Extensive Size Range – From 1/2" to 6" , we offer a full range to meet your specific system requirements

• Full Traceability – Every valve is supplied with material test reports (EN 10204 3.1) and full traceability documentation for audit compliance

• Competitive Pricing – Direct manufacturing capabilities allow us to offer factory-direct pricing without compromising quality

• Expert Support – Our team of sanitary valve specialists provides technical guidance on welding procedures, seal selection, and system integration

• Reliable Supply Chain – Consistent inventory and fast shipping ensure your projects and production lines stay on schedule