Explore our flagship OEM engineering components manufactured under strict ISO 9001:2015 frameworks.
In modern fluid dynamics and industrial pipeline systems, the U-Type butterfly valve has emerged as an indispensable cornerstone. Unlike traditional wafer or standard double-flanged configurations, the U-type profile utilizes a short face-to-face dimension combined with external bolt holes that span the outer boundary of the valve body. This dual layout allows for bidirectional dead-end service and simplifies alignment during installation in high-density piping assemblies.
As process industries pivot toward automated control loops and energy conservation, demand for high-integrity U-type designs has escalated. Major global sectors—including municipal waterworks, district heating, petrochemical plants, and marine cargo handlers—are moving away from heavy cast-iron gate valves in favor of high-performance U-type butterfly valves. This structural transition reduces line loads, shortens installation times, and significantly decreases initial capital outlays.
The U-type structural configuration offers the space-saving properties of a wafer valve while retaining the bolted securement advantages of a full double-flanged body. This layout permits downstream pipeline disconnection while maintaining upstream pressure—a feature critical for safety in modern chemical plants and heavy-industry processing operations.
The durability of a U-type butterfly valve relies on the structural integrity of its sealing mechanism and material selection. In recent years, material engineering has introduced vulcanized elastomer and polymer linings designed to resist chemical decomposition and mechanical wear.
How global system integrators and EPC contractors assess OEM U-type butterfly valve manufacturing standards.
Compliance with API 609, EN 593, ISO 5752, and AWWA C504. Standardized face-to-face and flange drilling guarantees inter-compatibility with existing networks.
Double-shaft sealing profiles using packing configurations (such as graphite or self-adjusting PTFE V-rings) to meet modern environmental safety regulations.
Standardized ISO 5211 mounting pads allow direct integration of pneumatic, electric, or hydraulic actuators without needing custom bracket systems.
A trusted global partner specializing in standard and customized valve design, manufacturing, and distribution.
KR has more than 20 years of experience in producing standard and non-standard valves of various types. We supply a wide selection of over 500 valve products, including butterfly valve, gate valve, check valve, water control valve, as well as all their matching and accessory products. These products have applications in various industries such as water treatment, dam construction, commercial buildings, energy and heating, chemical engineering, etc. We have won high repeat purchase rates from customers with excellent product variety and quality.
Beyond product excellence, we are dedicated to creating a mutually beneficial partnership with every customer. We believe that reliable service is as crucial as superior products, and we strive to continuously optimize the customer experience to achieve long-term win-win cooperation. Today, KR VALVE’s products have been exported to over 50 countries and regions in Europe, Asia, Africa, and Oceania, providing project construction and brand marketing services to thousands of customers.
From custom conceptualization to heavy industry deployment, explore our standard processing pipelines.
Our dedicated R&D department works to ensure continuous product optimization and innovation. Technicians design and develop products to meet customer specifications, utilizing laboratory testing facilities to evaluate valve flow dynamics and structural stress profiles under pressure.
Operating under ISO-9001 quality management, our factory runs 15 precision machining centers and specialized assembly lines. Monthly inventory updates help support reliable lead times, while production schedules are structured to align with customer delivery requirements.
Our quality control program is focused on supporting zero-leakage performance. In compliance with international testing standards, our team conducts physical inspections covering dimensional accuracy, cosmetic finish, shell pressure integrity, and seat leakage limits.
Why engineering consultants and valve distributors partner with KR VALVE.
We manufacture under our independent brand 'KR' and provide full-scope OEM and white-label manufacturing services for global distributors and component brands.
Equipped with high-performance machining systems and managed by an experienced production workforce, our facility supports consistent production runs.
Our portfolio spans 20 product series and over 500 catalog variants, including standard industrial valves and custom configurations built to customer drawings.
We monitor the supply chain for casting inputs, supervise machining operations, and test finished valves to maintain structural reliability.
Internal control over machining and assembly operations helps optimize production costs, allowing us to maintain competitive pricing structures.
Our engineering support desk assists with valve sizing, material selection, installation issues, and general after-sales inquiries.
Take an inside look at our manufacturing facility, heavy-machining cells, and automated test benches.
Our products are deployed in municipal networks, power projects, and process systems worldwide.
Supplied custom hydraulic control and check valves for a large-scale dam project, supporting reliable flow regulation under high static head conditions.
Delivered large-diameter U-type and double-flanged concentric butterfly valves to a regional water treatment utility, helping meet local municipal flow specifications.
Supplied EPDM-lined gate and heavy-duty butterfly valves to a waste treatment plant, handling media with high solids concentrations.
Provided PTFE-lined and stainless steel (CF8M) wafer and U-type butterfly valves for an industrial chemical processing facility handling acids and organic solvents.
Supplied cast steel (WCB) gate and metallic seated ball valves for a natural gas processing station, meeting low-temperature structural requirements.
Delivered resilient seated gate valves and non-return valves to support municipal waste fluid management in a municipal water reclamation plant.
Operating modern industrial infrastructure requires careful pressure management, backflow protection, and reliable isolating components. Piping networks frequently experience water hammer, pressure surges, and chemical corrosion. U-type butterfly valves help resolve these operational challenges:
To meet regulatory safety standards, each custom valve undergoes rigorous testing before shipment. Our testing criteria check all operational aspects of the valve assembly:
Technical details, design choices, and maintenance guidelines for engineers and procurement managers.
Complete your flow control assemblies with our certified gate, check, and specialty valve designs.
Explore our complete manufacturing capability across industrial valve categories.
Consult with our engineering team for custom drawings, technical specifications, and bulk pricing. We support global industrial and municipal projects with reliable flow control equipment.
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