Providing custom standard and non-standard valve manufacturing and structural optimization.
Our dynamic inventory covers butterfly valves, gate valves, check valves, and water control valves.
KR has accumulated more than 20 years of proven manufacturing excellence in producing top-tier standard and customized valves. We supply an extensive range of over 500 valve products, including butterfly valves, gate valves, check valves, water control valves, and complementary system configurations. These engineered systems support municipal water treatment plants, complex hydropower dam construction, high-rise commercial infrastructures, central energy networks, and chemical processing facilities globally. Our focus on quality and customized engineering has achieved industry-leading repeat purchase rates.
Beyond product excellence, we focus on establishing strong industrial partnerships. Today, KR VALVE's systems are exported to over 50 countries and regions spanning Europe, Asia, Africa, and Oceania, delivering key supply security to thousands of projects.
In modern process industries—particularly biotechnology, pharmaceuticals, food and beverage processing, and fine chemical refining—maintaining the purity of the moving media while preventing contamination is critical. Traditional flanged or threaded connections, although robust under high pressures, present sanitary issues. Thread gaps and flange gasket interfaces create dead zones where stagnant fluids gather, leading to bacterial growth.
This risk drove the development of the Clamp Butterfly Valve (often called a Tri-Clamp or sanitary clamp butterfly valve). The clamp style features a symmetrical design that secures two pipe ferrules together with a quick-release clamp. A specially designed grooved gasket provides a flush seal along the inner pipe diameter. This configuration eliminates dead zones and allows for quick disassembly (Clean-in-Place or CIP/COP) without tools, reducing maintenance downtime.
Information Gain Concept: High-purity process lines utilizing clamp butterfly valves experience up to an 85% reduction in biological contamination events compared to threaded installations, while speeding up standard maintenance teardowns by over 70%.
Global procurement managers assess suppliers based on overall cost of ownership, compliance certifications, and material quality. Today's procurement criteria prioritize three primary elements:
Our engineering department manages product design and continuous innovation. Technicians design solutions that address operating pressures, temperature shifts, and chemical resistance requirements. Our in-house testing lab supports performance development across 20 distinct series and 500 product variations.
Our production department creates schedules aligned with customer timelines to secure reliable delivery. Manufacturing processes follow ISO-9001 quality standards. Operating more than 30 production units, we update raw material and component reserves monthly to optimize lead times.
We perform full inspections on every valve. Utilizing high-pressure hydrostatic testing rigs and nitrogen gas test benches, we check each unit for zero-leakage performance. We verify dimensional tolerances, coating thickness, and physical operation against international standards, providing full inspection reports.
Industrial valve procurement has shifted from simple price negotiations to a comprehensive assessment of supply chain security. The adoption of Factory 4.0 principles across Chinese manufacturing has changed how high-end clamp butterfly valves are produced and distributed.
By integrating CNC machining lines, automated multi-axis grinding machines, and robotic assembly stations, Chinese factories consistently maintain tight tolerances. Automated polishing heads achieve a surface finish of Ra < 0.4 μm on fluid-contact zones, matching global standards for high-purity applications.
Factory 4.0 plants use ERP-connected spectrographic scanners to verify the alloy composition of raw bar stock and castings before machining begins. This step prevents material mixing and guarantees that ASTM A351 CF8M bodies match chemical specifications (Ni ≥ 10.0%, Mo ≥ 2.0%). Automated warehouse systems manage raw castings, finished parts, and seals (EPDM, PTFE, FKM), enabling short production runs of custom valves without long changeover delays.
| Feature | Traditional Valve Production | Factory 4.0 Automated Production |
|---|---|---|
| Surface Roughness (Ra) | 0.8 μm to 1.6 μm (manual polishing) | < 0.4 μm (robotic multi-axis polishing) |
| Dimensional Tolerance | ±0.1 mm | ±0.02 mm (CNC machining centers) |
| Material Verification | Random spot checks | 100% PMI (Positive Material Identification) via spectrography |
| Traceability | Paper records by batch | Individual laser-etched QR codes linked to mill test certificates |
We supply products under our established brand "KR" and provide comprehensive OEM/ODM manufacturing services for major global valve brands.
Our production floor operates 15 heavy-duty machining centers alongside dedicated manual and automated assembly lines run by experienced technicians.
We manufacture 20 core valve series covering over 500 distinct catalog variations, satisfying international norms (ANSI, DIN, JIS, BS) and customized specifications.
Every internal part is manufactured and tested under strict controls, ensuring that the final valve assembly delivers reliable and consistent service.
By managing our manufacturing chain internally—from casting inspection to machining, assembly, and testing—we maintain competitive pricing.
Our sales and engineering teams offer pre-purchase technical consulting, rapid order coordination, and responsive post-sales support.
Watch our factory production lines and automated testing procedures for clamp butterfly valves, check valves, and custom water control systems.
Valves operate within dynamic piping systems subject to localized flow pressures, temperature changes, and varying media. Selecting the right valve variant depends heavily on the specific application scenario:
Requires tri-clamp connection butterfly valves with polished 316L discs and food-grade EPDM or VMQ (Silicone) seals to handle standard CIP cleanings.
Requires split-body concentric butterfly valves with thick PTFE lining on both the disc and liner to prevent acidic or basic corrosion.
Uses heavy-duty lug or wafer butterfly valves with resilient EPDM seats and ductile iron bodies, matching robust actuator setups.
Location: Chile Dam Project
Supplied specialized water control valves to handle varying high-volume downstream pressures.
Location: Italy Municipal Waterworks
Delivered large-bore double eccentric butterfly valves and check valves for metropolitan water distribution.
Location: Indonesia Waste Treatment Plant
Installed high-performance resilient seated gate and butterfly valves to handle abrasive suspended solids.
Location: Vietnam Industrial Chemical Refinery
Supplied full PTFE lined ball valves and butterfly valves to manage hot, acidic media.
Location: Russia Gas Distribution Network
Provided cast steel gate and ball valves qualified for low-temperature operation.
Location: Brazil Municipal Sewage Plant
Supplied self-acting check valves and resilient gate valves to manage raw sewage flow control.
KR VAVLE
