RAYS Flow Control Inc

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RAYS Flow Control Inc RAYS Flow Control is your trusted partner for industrial valves. We thrive on a clear mindset to eng

RAYS Marine & Offshore Valves Receive CCS Type ApprovalWe are proud to share an important milestone for RAYS: our marine...
24/07/2026

RAYS Marine & Offshore Valves Receive CCS Type Approval

We are proud to share an important milestone for RAYS: our marine & offshore valve products have received Type Approval from the China Classification Society (CCS).

Behind this certificate is the combined effort of our engineering, manufacturing, quality, and testing teams. From drawing approval and type testing to process control and quality management, every step required close coordination and a shared commitment to meeting recognized classification requirements.

The approval covers trunnion ball valves, floating ball valves, concentric butterfly valves, and eccentric butterfly valves intended for shipboard service.

For RAYS, this recognition represents both progress and responsibility. It confirms our capability to manufacture the approved valve types in accordance with the CCS Rules for Classification of Sea-Going Steel Ships, while setting a clear standard that must be consistently maintained throughout future production.

We sincerely appreciate every team member who contributed to this achievement. Their expertise, discipline, and persistence made this milestone possible.

As RAYS continues to strengthen its presence in the marine sector, we remain committed to reliable engineering, controlled manufacturing, and dependable valve solutions for shipboard piping systems.

Cryogenic Gate Valve Reliability Starts Before TestingCryogenic testing is widely regarded as a critical validation step...
24/07/2026

Cryogenic Gate Valve Reliability Starts Before Testing

Cryogenic testing is widely regarded as a critical validation step for cryogenic gate valves—yet reliable low-temperature performance does not begin in the test chamber. It is shaped by every manufacturing decision made long before the completed valve enters the testing stage.

For an ongoing LNG project, RAYS is conducting cryogenic testing on 1"–2" Class 300–1500 gate valves to verify their performance against project-specific low-temperature requirements.

Before cooldown begins, valve performance already depends on:
• Material selection compatible with thermal contraction
• Precise machining of the seat and guiding surfaces
• Controlled assembly of the wedge, stem, bonnet, and packing
• Accurate alignment between the stem, wedge, and operating mechanism

When the fully assembled valve is cooled, these details are evaluated as one complete system.

Sealing integrity, external leakage control, and operability after cooldown demonstrate whether components manufactured under controlled dimensions, tolerances, and alignment continue to function together as intended at low temperatures.

Cryogenic testing does more than inspect a finished valve. It connects every earlier manufacturing decision with the conditions the valve is designed to face.

17/07/2026

RAYS Laboratory Now in Operation

Reliable valve performance begins with verified materials.

In industrial valve manufacturing, material composition, microstructure, hardness, mechanical properties, and corrosion resistance all influence performance under demanding service conditions.

To strengthen in-house material verification, the RAYS Laboratory integrates four dedicated areas:

• Corrosion Testing Laboratory
Intergranular corrosion and salt spray testing

• Mechanical Performance Testing Laboratory
Room-temperature and high-temperature tensile testing, room-temperature and low-temperature impact testing, and bending testing

• Sample Preparation Specimen
Metallographic and impact specimen preparation

• Comprehensive Testing Area
Metallographic examination, hardness testing, and spectrometric analysis

From specimen preparation to testing and analysis, each step provides stronger data support for material control and reliable valve manufacturing.


17/07/2026

DN1200 | PN25 Rising Stem Wedge Gate Valves Ready for Delivery

From component preparation to final assembly, large-diameter gate valve delivery depends on more than manufacturing capacity.

It requires controlled sealing surfaces, stable stem movement, reliable packing performance, and clear valve open/close position indication before the valve is ready for site installation.

RAYS has completed the delivery preparation of DN1200 | PN25 Rising Stem Wedge Gate Valves for a project.

Key design and manufacturing details include:
• Hardfaced sealing surfaces for improved wear resistance
• High-strength one-piece stem for reliable torque transmission
• Double-start stem thread to reduce opening and closing time
• Two-stage low-emission packing for improved stem sealing performance
• Position indication arrangement to support actuator installation and commissioning

For large-diameter gate valves, delivery is not the end of production.
It is the result of every controlled manufacturing, assembly and inspection step before the valve enters service.

RAYS Safety Week 2026At RAYS, safety is not only a workplace requirement. It is a shared responsibility embedded in how ...
09/07/2026

RAYS Safety Week 2026

At RAYS, safety is not only a workplace requirement. It is a shared responsibility embedded in how we communicate, operate, and prepare for every manufacturing process.

During RAYS Safety Week 2026, our teams participated in safety awareness training and fire drill activities, with a focus on emergency response, fire prevention, workplace risk awareness, and safe operating practices across the production environment.

The training helped reinforce practical knowledge for daily operations, while the fire drill strengthened team coordination and response capability in real workplace scenarios.

In valve manufacturing, reliability starts long before final inspection. It begins with disciplined operations, clear safety awareness, and every employee’s commitment to responsible work.

From routine tasks to critical manufacturing procedures, every safe step helps build a more stable, efficient, and reliable production system.

Safe Work Starts with Awareness.

Is a Higher Cv Always Better? Not Necessarily.Cv sizing often includes margin for future changes or flow variation. Howe...
02/07/2026

Is a Higher Cv Always Better? Not Necessarily.

Cv sizing often includes margin for future changes or flow variation.
However, an oversized Cv may force the valve to operate at very low openings, sometimes below 15%–25% of stroke.

This may lead to:

• Small travel changes causing large flow changes
• Higher valve gain and greater sensitivity at low opening
• Concentrated pressure drop and higher velocity
• Higher local velocity through the vena contracta
• Reduced controllability as process conditions change
• Increased risk of noise, wear, erosion, or cavitation

In other words, an oversized Cv can make a valve harder to control, rather than more reliable. Cv should not be evaluated as an isolated number.

Proper valve sizing also depends on:

• Inherent flow characteristic: linear or equal percentage
• Trim design and flow-gain distribution across valve travel
• Media properties, temperature and operating pressure
• Valve travel at minimum, normal, and maximum flow conditions
• Valve vs system pressure drop

For continuous control, valves should operate within a suitable travel range, typically around 30%–80% for stable and predictable control.

02/07/2026

RAYS is a global leader in manufacturing precision-engineered valves, setting the standard for quality and innovation in industrial applications. With three state-of-the-art facilities spanning 753,000 sq ft, we leverage advanced flexible manufacturing lines and CNC precision machining centers to ensure excellence in every product. Our valves—ranging from Control, Ball, Cryogenic, Butterfly, Gate, Globe, and Special Valves—are rigorously tested for fire safety, high-temperature, cryogenic, and high-pressure gas applications. Certified with ISO, API, CE, Fire-Safe, and Fugitive Emission Compliance, RAYS guarantees reliability and safety. 🌍✨

30/06/2026

At RAYS, precision meets innovation to power industries around the globe 🌍. With three world-class manufacturing facilities spanning 753,000 sq ft, we specialize in crafting high-performance valves tailored for the most demanding applications. From Control Valves to Cryogenic Valves, and everything in-between, our advanced flexible manufacturing lines and CNC precision machining centers deliver unmatched quality and reliability.

Safety and compliance are at the heart of everything we do, with in-house testing for fire safety, high-temperature, cryogenic, and high-pressure gas scenarios. Certified to ISO, API, CE, Fire-Safe, and Fugitive Emission standards, RAYS ensures excellence you can trust. Join us in shaping industries with precision-engineered solutions! ✨

Address

8F, Oujiang International Office Building, Sanjiang Street, Yongjia
Wenzhou
325102

Telephone

+1 (832) 827-3427

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