Explore our top performance, industry-compliant wafer butterfly valves and critical pipeline flow-control devices, manufactured in accordance with strict international standards.
KR possesses more than 20 years of experience in producing standard and non-standard valves of various types. We supply an extensive selection of over 500 valve products, including butterfly valves, gate valves, check valves, and water control valves, as well as their matching and accessory products. These high-performance flow regulation mechanisms serve demanding applications in sectors such as water treatment, municipal water pipeline engineering, dam construction, commercial building infrastructure, energy and heating, chemical engineering, and natural gas systems.
Today, KR VALVE’s products are exported to over 50 countries and regions in Europe, Asia, Africa, and Oceania, providing project construction and brand marketing services to thousands of customers. We look forward to collaborating with you, leveraging our expertise, comprehensive product range, and unwavering commitment to quality and service to support your success.
Our capabilities scale from small-batch customized OEM specifications to multi-ton pipeline components for municipal water grids.
From metallurgical verification to final torque profile adjustments, our processes ensure zero leakage under rated pressure conditions.
Our engineering division manages specialized technical software (CAD, SolidWorks, and FEA tools) to guarantee precision structural layout and mechanical integrity. Technicians continually develop customized flow devices that respond dynamically to field stresses, ensuring high flow coefficients (Cv) and minimum head loss.
Operated under strict adherence to ISO 9001:2015 specifications, our production floor is equipped with 15 advanced machining centers and robust assembly lines. Our monthly capacity allows us to maintain stable stockpiles of essential castings, flanges, and resilient liners to guarantee prompt deliveries.
Every single valve undergoes pressure testing to conform to EN 12266-1 and API 598 metrics prior to packaging. Non-destructive testing (NDT), wall thickness validation, pneumatic seat integrity tests, and coating thickness measurements are standard operational practices for our quality team.
Purchasing customized wafer butterfly valves directly from a Chinese industrial center provides high structural capability and logistical agility. Our factory optimizes component sourcing to achieve a competitive edge for major EPC projects.
Our location provides direct access to high-quality foundries specializing in cast iron (GG25/ASTM A126 Class B), ductile iron (GGG40/GGG50/ASTM A536), cast carbon steel (WCB, WCC), and stainless steels (CF8, CF8M). This dynamic casting supply chain allows us to accommodate custom alloy specifications (such as Duplex steel or Hastelloy) with short preparation times.
By executing machining, lining application (PTFE/EPDM/NBR), disc surfacing (SS304/SS316), pneumatic/electric actuator pairing, and testing under one organization, we reduce standard supply chain friction. Projects benefit from lower lead times, helping them meet installation deadlines.
Our internal laboratories execute physical and chemical tests. Metallurgical spectrum analysis, hardness checks, tensile testing, and low-temperature impact tests ensure our valves remain stable under mechanical stresses.
Global industrial projects operate under stringent regulatory frameworks. KR Wafer Butterfly Valves are manufactured to align with standard international specifications.
| Standard System | Applicable Specification | Engineering Significance |
|---|---|---|
| API Standards | API 609 / API 598 | Governs butterfly valve design envelope dimensions, pressure-temperature ratings, and zero-leakage testing requirements. |
| EN / DIN Standards | EN 593 / EN 12266-1 | Specifies design criteria and mandatory inspection requirements for industrial European pipeline installations. |
| ASME Standards | ASME B16.34 / ASME B16.1 | Defines structural wall thicknesses, flange drilling dimensions, and pressure safety parameters. |
| ISO Standards | ISO 5752 / ISO 5211 | Standardizes face-to-face dimensions and valve-to-actuator mounting patterns to ensure compatibility with third-party actuators. |
| Potable Water Standards | WRAS / NSF/ANSI 61 / EPDM Resilient | Ensures elastomeric components and epoxy coatings do not contaminate municipal drinking water systems. |
Our butterfly valves and water systems are engineered to perform in various demanding projects worldwide.
We supplied large-diameter concentric wafer butterfly valves and dual-disc check valves for the municipal waterworks in Italy, managing pressure and flow stability.
We supplied water control and pressure reduction valves for a high-head dam project in Chile, ensuring performance under mechanical loads.
For a municipal sewage treatment plant in Brazil, we delivered resilient-seated gate and wafer butterfly valves that resist biochemical and abrasive wear.
For a chemical facility in Vietnam, we provided PTFE-lined corrosion-resistant ball valves and butterfly valves to handle aggressive industrial chemical flows.
We supplied cast iron butterfly valves and Y-strainers for a sludge plant in Indonesia, protecting downstream pumps from solid debris.
For a natural gas project in Russia, we supplied WCB gate valves and metal-seated valves designed to maintain seal integrity under cold conditions.
Watch our machining processes and valve pressure testing protocols.
Our operational infrastructure is organized to support project developers, distributors, and procurement managers.
We market under our proprietary brand "KR" and provide OEM manufacturing services for recognized international valve brands.
With 15 CNC machining centers, automated welding setups, and testing benches, our technicians control product dimensional accuracy.
We support various sizes (DN40 - DN2000), ratings (PN6, PN10, PN16, Class 150), and material pairings (PTFE, EPDM, CF8, WCB, DI).
We perform quality checks on raw castings, dimensional tolerance verifications, and high-pressure seat checks on all finished valves.
We source raw materials efficiently and use automated processes to manage manufacturing costs, passing these savings on to our customers.
We provide support from design through installation. Our technicians assist with valve sizing, torque calculations, and material selections.
Review our core configurations. We manufacture custom valves to meet your specific pressure, temperature, and media parameters.
We supply standard and custom check valves, strainers, and control valves to support global pipeline projects.
Contact our design and sales team for engineering support, standard drawings, or customized pricing for your pipeline configurations.
Submit RFQ / Contact Sales Representative
KR VAVLE
