CE Certification Threaded Gate Valve Product & Service

The Architecture of Threaded Gate Valves & CE Compliance Standards

In modern industrial fluid systems, process efficiency and absolute isolation capabilities represent critical baselines for system security. The Threaded Gate Valve serves as a reliable isolation solution, widely utilized in mechanical engineering, HVAC, water management networks, and process piping. Standardizing these components under safety regulations like the CE Certification (Pressure Equipment Directive 2014/68/EU) ensures that each valve installed in a pressure system can handle mechanical stresses and hydraulic forces without failure.

Unlike butterfly or ball valves, gate valves provide a straight-through flow design. When the wedge is fully raised, the fluid flow encounters virtually zero resistance, translating into minimal pressure drops across the pipeline. For engineers designing long-run networks, this characteristic helps minimize pumping costs. The implementation of precision-cut internal threads facilitates installation, eliminating heavy flanges in compact spaces, while providing structural tightness at high service temperatures and pressures.

Zero-Flow Obstruction

Our threaded gate valves feature a fully retractable gate system that removes all obstructions from the flow path, allowing max flow capacity (Cv value) with minimal pressure loss.

High Leak Tightness

Designed with micro-polished seats and durable seal profiles (such as optimized PTFE or precision metal-to-metal wedge seating), preventing system leakage.

CE & ISO Certification

Full compliance with the European Pressure Equipment Directive (PED). Certified safe for commercial, industrial, and high-pressure steam distribution architectures.

Company Profile: A Legacy of Engineering Precision

Yuhuan Yongda Fluid Control Co., Ltd. (formerly Yuhuan Yongda Plumbing Co., Ltd.) was founded in 1996 and is strategically located in the "China Valve Capital" – Yuhuan, Zhejiang Province. Over the last quarter-century, we have matured into a leading enterprise focusing on the complete engineering cycle of research, development, custom manufacturing, and global sales of plumbing and HVAC valve products.

Our main products are divided into three broad categories: brass valves, precision pipe fittings, and HVAC distribution components. Positioned in the mid-to-high-end market segment, our products highlight environmental sustainability, material integrity, and long service life. This focus has earned us the trust of major procurement partners across North America, Europe, and Asia-Pacific.

Operating a production center exceeding 45,000 square meters—with an actual usable floor area reaching 80,000 square meters—we house more than 600 sets of advanced manufacturing and inspection systems. This include 80+ dedicated automated machine tools designed for multi-axis operations, which allow us to maintain dimensional accuracy and scale production to satisfy complex OEM/ODM projects.

Yuhuan Yongda Fluid Control Factory Infrastructure

Cokaren Brand Strategy: "Keep Flowing, Keep Warming"

Under the corporate umbrella of Yongda Fluid Control, our specialized brand, Cokaren, represents our commitment to advanced aesthetics, refined finish quality, and performance design. Cokaren was conceived to deliver high-quality fluid distribution solutions directly into contemporary residential and commercial architectures.

Our brand promise, "Keep Flowing, Keep Warming," represents our core mission: to design systems that keep water distribution flowing safely, and heating environments operating efficiently. Through strategic investments in design, manufacturing processes, and quality assurance, Cokaren continues to expand its position as a dynamic, high-growth enterprise focused on providing world-class water accessories and HVAC solutions.

Corporate Culture, Tenets & Quality Policies

Our operation is built on four core values: Struggle, Enterprising, Pragmatic, and Innovative. By combining engineering precision with customer focus, we prioritize product quality to address potential leakage hazards before components leave our facility.

"Fine work, no leakage" is our manufacturing quality policy. Our engineering team strives to optimize the performance of each valve to achieve zero defect rates and ensure long-term pressure retention.

We are committed to building our corporate capabilities while enhancing employee welfare and development. We believe that aligning corporate growth with personal career growth creates a motivated team, which directly translates to reliable support and high-quality products for our global customers.

Yongda Corporate Culture and Quality Management

Quality Management System Certifications

Global Safety Certifications & ISO Quality Standards

To meet the regulatory requirements of different countries, Yuhuan Yongda Fluid Control Co., Ltd. has established and maintained robust management systems. These systems have been audited and certified to meet the following international standards:

ISO 9001:2015 — Quality Management System Certification
ISO 14001:2015 — Environmental Management System Certification
ISO 45001:2018 — Occupational Health and Safety Management System

These certifications demonstrate our commitment to systematic quality control, environmental compliance, and worker safety, providing a reliable foundation for our global manufacturing partnerships.

Macro Industry Solutions & System Applications

Modern fluid systems face challenging operating conditions, requiring valves that can handle high pressure cycles, sudden temperature variations, and corrosive chemistries. Our product range is engineered to address these demands, providing reliable performance across a variety of industrial and municipal applications.

District HVAC & Underfloor Heating

Our temperature control valves, smart thermostats, and brass manifolds work together to manage energy distribution in commercial HVAC systems and residential underfloor heating. They help optimize thermal output while maintaining system pressure stability.

Industrial Water Treatment & Filtration

Water systems require filtration to protect downstream pumps, heat exchangers, and sensitive monitoring equipment. Our filter-integrated ball valves and self-cleaning water filters help remove up to 98% of suspended solids, reducing system maintenance needs.

Boiler Protection & Hydronic Safety

High-temperature heating loops require reliable safety accessories. Our pressure relief valves, expansion vessel connection kits, and automatic venting devices help protect boilers and pipelines by discharging excess air and pressure during operation.

Technical Roadmap & Future Outlook: Next-Gen Gate Valves

As industries work to reduce energy consumption, valve engineering is evolving to improve flow efficiency and support smart system integration. Our R&D team is focused on developing next-generation threaded gate valves that meet the changing needs of global fluid networks.

Smart IoT Actuation

We are developing motorized threaded gate valves with low-power IoT actuators. These will enable remote flow adjustment and real-time status reporting, allowing facilities to monitor valve positions through SCADA networks.

Eco-Friendly, Lead-Free Alloys

In response to international drinking water directives (such as NSF/ANSI 61 and the European Drinking Water Directive), we are expanding our use of lead-free brass formulations (CW617N, DZR brass) to prevent heavy metal contamination in potable water lines.

Anti-Wear Ceramic Wedge Liners

To extend valve life in high-cycle or abrasive applications, we are testing thin-film ceramic treatments on metal wedges. These coatings help reduce friction, minimize wear, and maintain sealing performance over time.

China Factory 4.0: Supply Chain Resilience & Efficiency

Located in Yuhuan, the heart of China’s valve industry, our factory leverages a highly developed local ecosystem. By integrating raw material sourcing, casting, precision machining, and assembly within a single region, we can optimize lead times and maintain consistent quality control across our product lines.

Automated Forging

Our automated forging lines use induction heating and hydraulic presses to maintain consistent metal density and eliminate internal gas pockets, resulting in strong valve bodies.

CNC Multi-Axis Machining

Dedicated multi-axis CNC machine centers drill, bore, and tap threads in a single operation. This approach keeps threads concentric and ensures a consistent fit during installation.

100% Leakage Inspection

Every valve undergoes pneumatic and hydrostatic pressure testing to verify sealing integrity. This strict protocol supports our quality goal of "fine work, no leakage."

Material Traceability

Incoming brass ingots undergo spectral analysis to verify chemical composition, and each production batch is tracked to maintain traceability from raw material to finished product.

Global Enterprises Procurement & Compliance Requirements

For international buyers, importing fluid control components involves navigating complex regional standards and logistics requirements. We work to support procurement teams by addressing compliance and distribution needs directly.

EU Markets (CE & EN Standards)

We provide full technical documentation to support compliance with the Pressure Equipment Directive (PED) 2014/68/EU. Our valves are marked with the CE logo, batch codes, and nominal pressure ratings (PN), facilitating clearance through European customs.

North American Markets

For US and Canadian buyers, we manufacture valves to meet NPT thread specifications, ASME dimensional standards, and lead-free material regulations for drinking water systems.

OEM Customization (White Label)

We offer custom marking, packaging, and custom-engineered handwheel designs to help distributors integrate our valves directly into their existing product lines.

Energy Distribution System & Product Integration

A high-performance heating or water distribution network depends on the integration of multiple components. Below is an overview of how our primary control valves and system accessories fit together to support efficient fluid loops.

Energy Distribution System Schematic Diagram

Comprehensive Hydronic Control and Water Purification Layout

HVAC Control Valve

Ensures stable fluid flow in underfloor manifold loops.

Overpressure Discharge Valve

Automatically releases system overpressure to protect pipelines.

Y9021 Water Filter

Filters out up to 98% of physical impurities in potable water lines.

Boiler Feed Assembly

Maintains system water levels and pressure balance.

Boiler Angle Valve Y5001/Y5002

Features a spherical spool to regulate boiler cold and hot water inlets.

Pressure Relief Valve

Protects water heater tanks from thermal expansion stresses.

Y9070 Venting Valve

Discharges trapped air pockets to prevent airlocks in heating lines.

Thermostatic Mixing Valve

Controls water blending to maintain stable output temperatures.

Bypass Valve Group

Maintains minimum flow rates across high-capacity boilers.

Compact Air Vent

Releases trapped gases to protect systems from oxidation.

Y5020 Mixing Shunt

Blends cold and hot fluids to stabilize distribution loop temperatures.

Thermal Actuator Head

Provides motorized zoning control for underfloor heating loops.

Hub Controller Box

Coordinates actuator states and room thermostats.

Y9031 Smart Thermostat

Provides digital programming for indoor temperature control.

Y2010/Y6012 HVAC Valve

Combines filtering, drainage, and differential pressure measurement.

Y1001 Manifold

Distributes hot water loops across multiple zones.

Featured Valve Products Detailed Technical Features

Ball Valve with Filter

Combines a full-bore isolation ball valve with an integrated stainless steel strainer. This dual-function design saves installation space and reduces connection points, helping minimize potential leak paths in commercial piping networks.

Manual Temp Control Valve

Designed for hydronic systems, this manual temperature control valve allows users to adjust fluid volume and output temperatures in radiators and localized heating zones, helping support energy efficiency.

Mixing Shunt Station

Combines supply and return flows to manage water temperature before it enters underfloor heating loops. This station helps prevent thermal cracking in concrete subfloors while maintaining comfortable indoor temperatures.

HVAC Brass Manifold

Extruded from high-density brass profiles, our distribution manifolds provide independent flow adjustment for multiple zones. Featuring integrated flowmeters and balancing valves, they help ensure even heat distribution across floor systems.

Cokaren Horse Bibcock

An outdoor brass faucet designed for garden, washdown, and auxiliary agricultural water lines. Featuring a heavy-duty forged body and ergonomic handle, it provides reliable operation in outdoor environments.

Standard Brass Gate Valve

Our standard brass gate valve is engineered for bi-directional isolation in plumbing and HVAC systems. The solid wedge design provides a tight seal at high static pressures, while the non-rising stem fits into tight installation spaces.

Water Meter Connection Tubes

Connecting tubes designed for municipal and residential water meters. Machined from sanitary brass alloys, these connections resist stress corrosion cracking and ensure stable, leak-free alignments.

American Brass Hose Barb

Designed to comply with ASTM standards for flexible tubing, these fittings provide reliable connections in pneumatic systems, water lines, and light industrial process piping.

Frequently Asked Questions (FAQ)

What is the importance of CE Certification for threaded gate valves?

CE Certification indicates that the valve complies with the Pressure Equipment Directive (PED) 2014/68/EU. This registration is a legal requirement for selling pressure equipment in the European Economic Area. It confirms that the valve design, materials, and pressure ratings have been evaluated to ensure safety and structural integrity under operational pressure limits.

How does a threaded gate valve compare to a ball valve for system isolation?

Gate valves are designed for isolation (on/off control) rather than throttling. When fully open, the gate retracts completely, creating a straight-through flow path that minimizes pressure drop. In contrast, ball valves offer faster quarter-turn operation but can cause small pressure drops and flow turbulences depending on the port configuration.

Which thread types are available for international orders?

We manufacture valves with different thread standards to suit regional requirements: BSPP (parallel threads) and BSPT (tapered threads) for European and Asian markets, and NPT (National Pipe Taper) for North American piping networks.

What quality control steps are taken to ensure zero leakage?

Every valve is pressure tested using hydrostatic and pneumatic equipment in compliance with ISO 9001 quality guidelines. This ensures the valve body can withstand design pressures and the wedge seals tightly before shipment.

Are these brass gate valves suitable for potable drinking water?

Yes. For drinking water installations, we use lead-free brass alloys (such as CW617N or specialized DZR brasses) that meet national and international hygiene regulations, including NSF/ANSI 61 and EU drinking water standards.