Yongda
Yongda
Engineered to exact standards, our industrial-grade connectors, valves, and control systems provide the backbone for fluid distribution efficiency.
Gas pressure regulators are precision instruments designed to decrease high, fluctuating inlet pressures down to a stable, safe, and functional outlet pressure. In the modern industrial and commercial landscape, maintaining pressure stability is paramount for process repeatability, safety compliance, and energy conservation.
Whether handling natural gas, liquefied petroleum gas (LPG), or specialized industrial gases (nitrogen, oxygen, argon), the regulator functions as the absolute line of defense. The mechanics behind gas regulation—leveraging spring-loaded diaphragms, pilot-controlled pistons, or sophisticated self-acting systems—determine how efficiently an energy grid or combustion system operates.
Globally, strict codes such as ASME, EN 334, and UL standards dictate the parameters under which these systems operate. Poor pressure regulation introduces severe economic and safety hazards: gas leaks, pilot flame blowout, overpressurization, and structural degradation of HVAC equipment. For industrial plants, gas fluctuations directly correlate to reduced heat transfer efficiency and thermal fatigue.
Founded in 1996 in Yuhuan, Zhejiang—widely recognized as the "China valve capital"—Yuhuan Yongda Fluid Control Co., Ltd. (formerly Yuhuan Yongda Plumbing Co., Ltd.) has grown into an industry-leading OEM and ODM partner for global brass valve, fitting, and HVAC component solutions.
Our commitment is represented in our premium brand Cokaren, centered on the core corporate promise: "keep flowing, keep warming". By focusing on refined aesthetics, precise structural design, and extended product lifecycles, Cokaren provides advanced solutions for high-performance domestic water systems, radiant underfloor heating networks, and HVAC boiler systems.
We target mid-to-high-grade international markets, engineering products with sustainable, lead-free, and dezincification-resistant (DZR) materials. This strategic positioning has gained long-term trust from Tier-1 distributors and procurement managers across North America, Europe, and Asia.
Combining structural automation, regional cluster synergies, and deep material science integration to deliver high-precision products at global scale.
Our workshop features over 80 sets of specialized machine tools and multi-axis CNC machines to achieve tolerances within +/- 0.01mm.
Following our corporate quality policy—"Fine work, no leakage"—every regulator undergoes 100% helium pressure testing before dispatch.
Based in Yuhuan, we tap into a mature ecosystem of raw copper extrusion, precision hot forging, and surface plating industries.
From centralized heating networks in municipal projects to high-end residential distribution systems.
Within boiler units, gas pressure regulators must handle rapid thermal shifts and varying input pressures. Fluctuations in pressure degrade the efficiency of boiler burners, leading to elevated carbon emission profiles. Our systems ensure standard gas flow to maintain optimal fuel-to-air ratios.
Modern hydronic underfloor heating requires precise, localized flow balancing and pressure bypass settings. Operating within multi-family residential projects requires continuous pressure correction to eliminate noise, hydraulic shocks, and localized cold spots.
For glass, steel, or chemicals processing, custom-tailored brass pressure regulators provide critical safety functions. High chemical compatibility with corrosive gas blends prevents diaphragm degradation and ensures continuous operation.
Our complete range of HVAC and mechanical components designed to distribute, filter, and balance flow across industrial and residential applications.
The first line of defense in domestic water sanitation, filtering up to 98% of impurities within pipelines.
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Used to control the inflow and outflow of cold water and hot water in the boiler, with Spherical spool.
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Used to discharge excess air in the air source water heater to ensure stable operation of the equipment.
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Used to mix cold and hot water in pipes, stabilizing temperature, protect pipeline.
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Combine all the equipment to adjust the room temperature.
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Used to filter and discharge impurities in the pipeline, control the switch of the back-end manifold, measure temperature and water pressure.
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Distribute water flow to various rooms Combine all the equipment to adjust the room temperature.
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High-grade brass fitting optimizing pipeline distribution efficiency and reducing local head loss.
Learn More Spec SheetThe global fluid control and gas pressure regulation industry is undergoing rapid transformations driven by technological advancements and strict carbon regulations:
Procurement directors seek reliable suppliers that can balance quality consistency with supply chain resilience. Key operational expectations include:
Review our specialized plumbing and heating components, featuring robust designs, anti-corrosion chemistry, and leak-free reliability.
Outstanding multi-functionality: integrating a cleanable mesh sieve directly within the forged brass body to save structural space.
Manual and automated temperature control variations designed for reliable hydronic balancing.
Regulates water temperature inside heating grids, preventing thermal shocks to underfloor PEX piping systems.
Robust brass distribution headers with integrated flow meters and automatic air vents.
Cokaren's premium garden and utility water outlet, manufactured with anti-corrosive brass composition.
Straight-through flow path design minimizes pressure loss across medium-to-high pressure setups.
Precisely calibrated brass inlet and outlet piping adapters designed for utility metering installations.
Hose barb connectors designed for industrial pneumatic systems and localized plumbing lines.
State-of-the-art flow regulation manifolds, integrating air separation and thermostatic zone bypass controls.
Engineered for high durability and performance in mechanical systems
Technical answers to key industry questions on pressure regulation, material choices, and system design.
Direct-acting pressure regulators use the downstream force acting directly on the internal diaphragm to counteract the force of the main adjusting spring. These regulators feature fast response speeds and are suitable for systems with low-to-medium flow ranges. Pilot-operated regulators, on the other hand, leverage an auxiliary pilot regulator that amplifies pressure signals to control the opening of the main valve. This system enables precise pressure control under wide flow rate fluctuations and higher inlet pressures.
Dezincification is a selective corrosion process where zinc is leached out of copper-zinc alloys (brass), leaving a porous, structurally weak copper matrix. This issue is common in aggressive water environments containing high levels of oxygen or carbon dioxide. Utilizing DZR brass ensures the integrity of valves and pressure regulator bodies, preventing leaks, internal blockages, and premature failure of piping networks.
Air bubbles trapped inside hydronic piping grids lead to air locks, which restrict fluid circulation. Air pocket accumulation reduces heat transfer rates at the heat exchanger surfaces. An automatic air vent valve continuously vents trapped air pockets while retaining the fluid inside the system. This optimization prevents radiator cold spots, protects pump impellers from cavitation, and minimizes overall fuel consumption in central boilers.
Our quality control program requires multiple validation steps: 100% pneumatic testing for seal tight alignment, structural wall thickness validation with ultrasonic gauges, and helium mass spectrometer leak tests. We perform cycle tests (running valves through thousands of open-close actions under maximum pressure differentials) to verify mechanical durability over decades of usage.
Standard plumbing brass valves cannot be used for LPG applications without configuration updates. Liquefied petroleum gas requires specialized elastomer gaskets (such as NBR or FKM) that resist chemical solvent attack from LPG compounds. Additionally, gas rated valves must operate at higher pressure tolerances and comply with specific gas emission certifications.
For custom engineering projects, the development process takes approximately 4-6 weeks for mold prototyping and flow validation, followed by 30 days for bulk production runs. We provide complete 3D CAD modeling and digital simulation analysis to streamline product development.
Complete your supply chain with our range of gate valves, compression fittings, and temperature controllers.
