Company Profile
ABOUT US
Founded in 2008, STILONN Valves & Controls Pvt. Ltd. (an Aeroflex Group company) is a specialty manufacturer of high-precision stainless steel valves. What began as a trusted name in hygienic and sanitary valves for the pharmaceutical, dairy, food & beverage, and biotech industries has today grown into India’s pioneering manufacturer of Secondary Fluid Network (SFN) valves for data center liquid cooling.
As AI and high-density computing drive the global shift from air cooling to liquid cooling, STILONN stands at the forefront of this transformation in India. We have successfully supplied valves for India’s first data center liquid cooling projects, partnering with leading CDU OEMs, hyperscale and colocation data center operators, and cooling system integrators. This hands-on project experience — from CDU skids to Technology Cooling System (TCS) loops — makes STILONN one of the most experienced liquid cooling valve manufacturers in the country.
Data Center Liquid Cooling Expertise
STILONN designs and manufactures a complete range of stainless steel valves engineered for the Secondary Fluid Network (SFN) of liquid-cooled data centers — the critical loop between the CDU (Coolant Distribution Unit) and the server racks.
Our SFN / liquid cooling valve range includes:
- Butterfly Valves (CF8 / CF8M, lug and wafer type) for coolant isolation
- Ball Valves (2-piece and 3-piece, full bore) for CDU and manifold isolation
- Static & Dynamic Balancing Valves for precise coolant flow distribution across racks
- Dual Plate & Swing Check Valves (NRVs) for pump protection
- Y-Type Strainers for coolant filtration and particle protection of cold plates
- Air Vent Valves for automatic air removal from coolant loops
- Custom adapters, manifold connections, and fabricated assemblies for CDU OEMs
All liquid cooling valves are manufactured in stainless steel (SS304 / SS316 / CF8 / CF8M) — fully compatible with PG25 and other glycol-based coolants, ensuring corrosion resistance, cleanliness, and long service life in mission-critical environments. Every valve is pressure tested and quality documented before dispatch, because in a data center, downtime is not an option.
Why data centers choose STILONN:
- India's first SFN valve manufacturer — proven on India's first liquid cooling deployments
- Full stainless steel construction — no brass, no carbon steel contamination risk
- Wetted parts engineered for coolant compatibility and low particle generation
- Short lead times with Make-in-India manufacturing and ready stock
- GA drawings, STEP files, and complete documentation support for OEM design integration
Hygienic & Sanitary Valves — Our Foundation
For over 17 years, STILONN has designed and manufactured a wide range of stainless steel hygienic valves and fittings — sanitary butterfly valves, sanitary ball valves, sanitary check valves, sight glasses, tri-clamp fittings, and unions — serving 900+ customers across the dairy, food, beverage, pharmaceutical, biotech, and cosmetic industries.
All products are manufactured to international standards including ISO, DIN, IDF, and SMS, with a choice of surface finishes and material grades. This deep expertise in cleanliness, precision machining, and stainless steel fabrication is exactly what we bring to the liquid cooling world — where coolant purity and reliability are just as critical as in a pharma plant.
Manufacturing & Quality
STILONN operates its own manufacturing facility at MIDC Kherdi, Chiplun (Ratnagiri, Maharashtra), with its head office at Gami Industrial Park, Pawne, Navi Mumbai. Our plant is equipped with advanced CNC machining, in-house pressure testing rigs, and inspection facilities covering 1,000+ SKUs.
Quality is ensured through careful selection of certified raw material suppliers, complete material traceability, documented inspection and test plans (ITPs), and a robust Quality Management System aligned with ISO 9001:2015. Every valve undergoes hydrostatic and pneumatic testing before it leaves our facility.
Our Commitment
By focusing on continuous innovation, engineering excellence, and close collaboration with our customers, STILONN is powering India’s digital infrastructure — one valve at a time. Ongoing investment in R&D drives the development of new products for the rapidly evolving liquid cooling market, while our flexibility, punctuality, and ready stock availability ensure the timely deliveries that mission-critical projects demand.