In the evolving landscape of global urban development and industrial expansion, the underground butterfly valve has transitioned from a simple component to a critical asset in "Smart City" water management and energy transportation. These valves, specifically engineered for buried service, must withstand extreme soil pressures, groundwater infiltration, and corrosive environments while maintaining operational integrity for 50+ years.
The global industrial valve market is projected to reach USD 110 billion by 2028. A significant portion of this growth is driven by the replacement of aging municipal water mains and the expansion of district heating/cooling networks in Europe and Asia. Shaanxi Kerlimar Engineers Co., Ltd. positions itself at the forefront of this trend by integrating high-performance materials with ESG-compliant manufacturing.
Unlike surface valves, underground butterfly valves utilize specialized "long stems" or "extension spindles" to allow operation from the surface. The industry is shifting toward Triple Offset Technology for underground applications, providing a torque-seated, metal-to-metal seal that eliminates the friction-induced wear common in traditional concentric designs.
Underground environments are highly volatile. Modern manufacturers now employ Fusion Bonded Epoxy (FBE) coatings and cathodic protection compatibility as standard features, ensuring that the valve body does not become a point of failure due to soil electrolysis or acidic moisture.
Established in 2003, Shaanxi Kerlimar Engineers Co., Ltd. has long been engaged in international trade business, mainly a variety of pipes, carbon steel, alloy steel, stainless steel material, seamless pipe, straight seam welded pipe, spiral welded pipe and matching pipe fittings. Manufacturing standards for ASTM, ASME, EN, JIS and so on, in line with international standards. We are providing good quality, price competition, timely delivery, perfect service!
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Intl Patents
For large-scale infrastructure projects, compliance is not negotiable. Our products strictly adhere to international benchmarks, ensuring seamless integration into localized engineering frameworks across North America, Europe, and the Middle East.
Standard specification for pressure-rated piping and valve assemblies in industrial oil & gas.
Meeting rigorous European standards for district heating and water distribution systems.
Ensuring precision and reliability for East Asian infrastructure and high-density urban plumbing.
The definitive standard for rubber-seated butterfly valves in water utility service.
The chairman of the company: Mr. Ming SUN, is a strong environmentalist and a fan of technological innovation. He cares about climate change and environmental protection, and makes continuous efforts and takes action for it.
Began in 2019, in response to the national innovation, public entrepreneurship, launched the clean energy technology research and development, then focus on the new vertical axis wind power technology research and development... More than 40 patents have been authorized by the State Intellectual Property Office, a number of international patents have been authorized.
In December 2020, we won the national High-tech Enterprise certification. In December 2023, we were invited to participate in the Dubai COP28 Conference. We are currently completed 10KW-500KW series of small units before landing experiment...
With the help of this series of technology efficiency, low cost, high reliable, high security, easy control and other fine features, will become an indispensable part of the new productivity, and make outstanding contribution for rural revitalization and early realization of the whole society double carbon goals!
The integration of digital twins and IoT sensors is the next frontier for underground butterfly valve manufacturers. By embedding vibration and pressure sensors within the valve body, operators can monitor flow health in real-time without excavation.
Low-power Bluetooth and LoRaWAN enabled actuators for remote operation in off-grid locations.
Self-healing coatings that prevent microbial-induced corrosion (MIC) in sewage and wastewater applications.
Design for maintainability allowing the internal components to be serviced through the extension stem without full pipe shutdown.
Large-diameter underground butterfly valves are the primary isolation points for city grids. Their compact "wafer" or "lug" design saves space in valve vaults, reducing civil engineering costs by up to 30% compared to gate valves.
In power plants and steel mills, buried butterfly valves control the flow of massive volumes of cooling water. Resistance to thermal expansion and high flow velocities is paramount here.
For large-scale farming, valves must handle untreated water with silt and organic matter. Our rubber-lined butterfly valves provide the necessary abrasion resistance for long-term reliability.
High-pressure pipelines require fire-safe, API-certified valves. Kerlimar's expertise in carbon steel and alloy pipes ensures that the valve-to-pipe connection is structurally sound and chemically compatible.
A: Butterfly valves are significantly lighter, take up less space, and are easier to operate under pressure. For buried applications, the reduced profile means smaller, less expensive valve boxes and easier installation in crowded utility corridors.
A: We utilize stainless steel or bronze bushings with O-ring seals at both the valve and the surface plate. This prevents soil and moisture from entering the stem guide, ensuring smooth operation even after years of dormancy.
A: Yes, provided the disc and stem are made from Duplex stainless steel or Aluminum Bronze, and the body is protected by heavy-duty epoxy coating. Shaanxi Kerlimar specializes in these high-corrosion material configurations.
A: It provides a "non-rubbing" seal, meaning the seal only contacts the seat at the final point of closure. This drastically reduces wear on the seal, extending the maintenance interval—a critical factor when excavation costs are high.
Kerlimar
