cropped-LOGO-1.png
Get A Quote
[gtranslate]

Trusted Tilting Disc Check Valve Manufacturer
| ASME B16.34 & API 6D | Class 150–2500

NTVAL manufactures tilting disc check valves for high-pressure and high-temperature service. Valves are designed and tested to ASME B16.34 and API 6D, available in NPS 2–32 (DN 50–800) with ASME Class 150–2500 pressure ratings. Standard end connections include flanged (ASME B16.5) and butt weld (ASME B16.25), with material options from WCB/LCB to CF8M and alloy steels. We support fast lead times, engineering selection support, and full QC documentation for international projects.
ntval-partner-logo (1)
ntval-partner-logo (2)
ntval-partner-logo (3)
ntval-partner-logo (4)
ntval-partner-logo (5)
ntval-partner-logo (6)
ntval-partner-logo (7)
ntval-partner-logo (8)
ntval-partner-logo (9)

Reliable Tilting Disc Check Valve

Check valves are essential in preventing the reversal of flow in piping systems. These valves function automatically, opening when fluid pressure flows in the intended direction and closing if the flow reverses. The closure mechanism can involve back pressure, gravity, a spring, or a combination of these forces. Common types include swing, piston, butterfly, stop, and tilting disk check valves.

The tilting disk check valve shares similarities with the swing check valve, with both offering low fluid resistance and minimal turbulence thanks to their straight-through design. However, the tilting disk design provides additional flexibility and improved performance. 

Compared with swing check valves, the tilting disc design typically responds faster near zero-flow, which helps reduce slamming and water-hammer risk in fluctuating systems.

Tilting disk check valves can be installed in horizontal or vertical pipelines with upward flow. Some models are designed to fit between two flange faces, making them a compact and lightweight solution for larger-diameter pipelines. These valves operate by having the disk lift off the seat as fluid flows through. The airfoil-shaped disk reduces flow resistance by “floating” on the fluid, optimizing performance.

Built-in disk stops within the valve body ensure proper disk alignment for optimal flow. The large body cavity of the valve minimizes flow restriction. As the flow slows, the disk gradually returns to its seat, sealing the valve to prevent reverse flow. For additional reliability, back pressure moves the disk into a soft seal before settling into the metal seat, ensuring a tight shutoff without slamming. In cases where back pressure alone is insufficient, the valve can be equipped with an external lever and weight to guarantee complete closure.

Installation note: recommended for horizontal lines and vertical upward flow. Not recommended for vertical downward flow, where closure behavior may be affected. For low back-pressure systems, an external lever and weight option can be provided to ensure full closure.

Tilting Disc Check Valve 1

Quality Control

Tilting Disc Check Valve 2
The PMI test checks the metal composition of each tilting disc check valve, confirming it’s made from materials suitable for its purpose.
PMI Test

Seat leakage test per API 598 to verify tight shutoff.
Tilting Disc Check Valve 3
A sealing test on every tilting disc check valve guarantees it maintains pressure and prevents leaks, essential for safe fluid handling.
Sealing Test

Seat leakage test per API 598 to verify tight shutoff.

Tilting Disc Check Valve 4
The low emission test ensures tilting disc check valves release minimal emissions, making them fit for applications with strict environmental standards.
Low Emission Test​

Optional fugitive emission testing for critical service.

Tilting Disc Check Valve 5
Impact testing measures the tilting disc check valve’s ability to handle physical stress, ensuring it stays intact under heavy industrial use.
Impact Test​

Low-temperature toughness verification for demanding duty.

Tilting Disc Check Valve 6
Dimension inspection confirms each tilting disc check valve matches specific size requirements, which is crucial for consistent fit and performance.
Dimension Inspection​

100% key-dimension check for installation interchangeability.

Tilting Disc Check Valve 7
The painting thickness test checks the protective coating on tilting disc check valves, helping to prevent rust and prolong the valve’s lifespan.
Painting Thickness Test​

Coating thickness verification for corrosion protection.

Tilting Disc Check Valve 8
PT testing identifies surface cracks in tilting disc check valves, checking for flaws that could weaken the valve under pressure.
PT

Surface defect detection on castings/welds.

Tilting Disc Check Valve 9
Material inspection confirms the materials in each tilting disc check valve meet industry quality standards, ensuring the valve performs dependably.
Material Inspection​

Incoming material chemical & mechanical verification.

Our Valve Applications in Key Industries

Discover how our advanced valve solutions improve flow control, delivering enhanced efficiency, safety, and strict quality assurance.
Tilting Disc Check Valve 10
Tilting disc check valves are ideal for chemical processing, offering strong corrosion resistance and dependable flow control when handling reactive substances.
Chemical Processing

Corrosion-resistant materials and stable closing behavior for reactive media.

Tilting Disc Check Valve 11
Petrol Chemical

Suitable for high pressure classes and temperature fluctuation; helps reduce slamming under flow changes.

Tilting Disc Check Valve 12
Tilting disc check valves support the O.P.G. and nuclear industries by offering secure, reliable flow control in high-stakes, safety-focused environments.
O.P.G & Nuclear

Reliable non-return protection where system safety margin is critical.

Tilting Disc Check Valve 13
Tilting disc check valves work well in the pulp industry, handling thick fluids and resisting buildup to keep flow steady and efficient.
Pulp

Handles fibrous media; smooth disc movement helps reduce buildup sensitivity.

Tilting Disc Check Valve 14
In mining, tilting disc check valves withstand abrasive materials and tough conditions, ensuring reliable operation when moving slurry and other heavy fluids.
Mining

Options for hardened trim and wear-resistant materials for abrasive slurry duty.

Tilting Disc Check Valve 15
Tilting disc check valves control water and sewage flow effectively, withstanding corrosion and helping to maintain safe, continuous operation.
Water & Sewage

Backflow protection for pumps and pipelines; low maintenance for municipal duty.

Tilting Disc Check Valve 16
Tilting disc check valves perform well in steam systems, handling high temperatures while securely managing flow to prevent leaks under heat.
Steam System

Designed for thermal cycling environments; reduces hammer risk in steam lines.

Tilting Disc Check Valve 17
In boiling systems, tilting disc check valves handle rapid temperature changes and support stable, secure flow control, making them suitable for safe operations.
Boiling System

Supports stable operation under rapid temperature/flow changes.

Get More Versatile Valve

Tilting Disc Check Valve 18

Gate Valve
Tilting Disc Check Valve 19

Ball Valve
Tilting Disc Check Valve 20

Globe Valve
Tilting Disc Check Valve 21

Check Valve
Tilting Disc Check Valve 22

Plug Valve
Tilting Disc Check Valve 23

Butterfly Valve

Features and Benefits of Tilting Disk Check Valve

Check valves are installed to allow flow in only one direction, protecting systems that could be damaged by reverse flow, such as during a system shutdown. These valves operate solely based on the flow direction and do not require any external actuation. It’s important to ensure the correct orientation during installation. For detailed guidance, please refer to the appropriate Installation Operation Manual (IOM).

Features of Tilting Disk Check Valve

  • Advanced Pressure Seal Design: Pressure-seal bonnet helps maintain sealing reliability under high-pressure duty and thermal cycling.

  • Live-Loaded Bonnet Bolting: Maintains gasket load stability, reducing re-torque frequency and leakage risk.

  • Unique Cage Unit for Pre-Assembly Testing: Seat–hinge–disc assembly can be function-tested before final integration, improving consistency.

  • Self-Aligning Seating: Conical hard-faced seating supports alignment stability and tight shutoff under repeated cycling.

Tilting Disc Check Valve 24
Size range(s)
  • NPS 2 – 24 (DN 50 – 600)
Pressure rating
  • ASME Classes 600 – 2500
Standard connections
  • Butt weld, Flanged

Custom configurations available upon request (materials, ends, testing documentation).

Benefits of Tilting Disk Check Valve

  • Prevents Leakage: Seating and bonnet sealing design reduce potential leak paths for critical service.

  • Prevents Water Hammer: Fast, controlled disc movement helps reduce slamming during rapid flow changes.

  • Easier In-Line Service: Service-friendly internal structure reduces downtime for inspection and maintenance.

  • Extended Service Life: Airfoil disc profile reduces turbulence and wear, improving long-term reliability.

Dimension

Tilting Disc Check Valve 25

Tilting Disc Check Valve

  • Cast Steel Tilting Disc Check Valve
  • Bolted Cover, Horizontal Lines
  • Designed in accordance with ASME B16.34.
    For pipeline service, see our API 6D valve solutions.

Face to Face

ASME/ANSI B16.10

End Flange

ASME/ANSI B16.5

Buttweld

ASME/ANSI B16.25

Class

ASME/ANSI CL150/300/600

Tilting Disc Check Valve – Technical Specifications Overview

Size Range NPS 2–32 (DN 50–800)
Pressure Class ASME Class 150 / 300 / 600 / 900 / 1500 / 2500
Design Standard ASME B16.34, API 6D
Face-to-Face ASME B16.10
End Connections Flanged (ASME B16.5), Butt Weld (ASME B16.25)
Materials WCB / LCB / CF8 / CF8M / Alloy Steel
Testing API 598 Hydrostatic + Seat Test, NDT / PMI (Optional)
CLASS 150 DIMENSION

SIZE

(in.)

2″

2-

1/2″

3″4″6″8″ 10”12″14″16″18″20″24″ 26″ 28″30″32″
                 Unit:mm
L20321624129235649562269878786497897812951295114311431194
D16018219623030039043251054063570077090093099110201150
W178198224252326426456530576670740818948988105010901240
W.T(kg)11162234621121692383374205506859101055126015401860
CLASS 300 DIMENSION

SIZE

(in.)

2″

2-

1/2″

3″4″6″8″ 10”12″14″16″18″20″24″ 26″ 28″30″32″
                 Unit:mm
L267292318356444533622711838864978101613461346129513721448
D170196214245320400460540580660725800940970104010801210
W1982202322683604264575726206907608489881018125012801350
W.T(kg)1722329711016222838044353078098013201364176220502870
CLASS 600 DIMENSION

SIZE

(in.)

2″

2-

1/2″

3″4″6″8″ 10”12″14″16″18″20″24″     
             Unit:mm    
L292330356432559660787838889991109211941397    
D185196210270340440520570610690755850990    
W2122252402984054604926026507107809021040    
W.T(kg)2744471151903204305867501015148020502550    

Want to Partner with an Expert Butterfly Gate Globe Check Ball Control Safety Valve Supplier?

Discover How We Can Help!

Additional General Insights Here

Specs of Tilting Disc Check Valve

Material Composition

Our tilting disc check valves are available in a full range of industrial materials, including:

  • Carbon Steel (WCB, LCB)

  • Stainless Steel (CF8, CF8M)

  • Alloy Steel (WC6, WC9)

  • Duplex and special alloys upon request

Critical trim components (disc, seat, hinge pin) can be hard-faced with Stellite or equivalent alloys for improved wear resistance in high-cycle or abrasive service.

Material Test Reports (EN 10204 3.1), PMI verification, and full material traceability are available upon request.

Size and Dimensions

Available in sizes from NPS 2 to NPS 32 (DN 50–800).
Larger sizes available upon request.

Face-to-face dimensions comply with ASME B16.10.
End connections include:

  • Flanged (ASME B16.5 / B16.47)

  • Butt Weld (ASME B16.25)

Compact body design allows installation in space-restricted piping systems without compromising flow performance.

Pressure and Temperature Ratings

Pressure classes available:

ASME Class 150, 300, 600, 900, 1500, and 2500.

Temperature range depends on selected body and trim material.
Standard configurations support -46°C to 260°C (-50°F to 500°F).
Extended temperature ratings available upon request.

All valves are hydrostatically tested in accordance with API 598.

Features of Tilting Disc Check Valve

Simple and Effective Design

Tilting Disc Check Valves have a simple yet effective design that allows the disc to tilt open or closed based on the flow direction. For instance, the valve body is made from strong materials like stainless steel or cast iron, providing long-lasting durability. The disc is hinged to rotate smoothly, reducing wear and tear over time. These valves are available in various sizes, making them adaptable to different pipeline diameters.

Smooth Operation

The hinges of the Tilting Disc Check Valves are designed for smooth operation, allowing the disc to tilt without obstruction. The streamlined design reduces turbulence and pressure drop, making them suitable for a wide range of fluid applications. They also feature a compact structure, which makes installation easier even in limited spaces. The valve's design minimizes the risk of water hammer, a common issue in fluid systems.

High Pressure and Temperature Handling

Tilting Disc Check Valves are built to handle high-pressure and high-temperature environments. Their construction materials are chosen for their strength and resistance to corrosion. The valve components are designed to perform reliably under extreme conditions. Anyone will agree that this makes them ideal for demanding industrial applications.

Benefits of Tilting Disc Check Valve

Reliability

The Tilting Disc Check Valve's design promotes reliable performance, reducing the likelihood of mechanical failure. This reliability is crucial for maintaining safe and efficient operations in industrial settings. The durable materials used in construction mean fewer replacements and repairs. NTVAL recognizes that this results in lower long-term maintenance costs.

Efficiency

With a streamlined design, these valves help maintain efficient fluid flow by minimizing resistance and pressure drop. The reduced turbulence in the system helps in conserving energy and improving overall system performance. The compact structure of the valve allows for more straightforward installation and integration into existing systems. This efficiency translates into cost savings and operational benefits for users.

Safety

Tilting Disc Check Valves enhance safety by preventing backflow, which can cause contamination or damage in piping systems. The minimized risk of water hammer protects the pipeline and connected equipment from sudden pressure surges. Regular maintenance is straightforward, which helps in keeping the valves in optimal working condition. This contributes to the overall safety and longevity of the fluid system.

Applications of Tilting Disc Check Valves

Petrol Chemical

Tilting Disc Check Valves are essential in the petrol chemical industry for managing the flow of various chemicals and hydrocarbons. For instance, they help in preventing backflow, which is crucial for maintaining the purity and quality of chemical products. These valves can withstand the harsh and corrosive environments typical in chemical processing plants.

Mining and Pulp Industries

In the mining and pulp industries, Tilting Disc Check Valves play a vital role in handling slurry and other abrasive liquids. The strong construction of these valves allows them to function effectively even with the presence of solid particles. At NTVAL, they help maintain a smooth flow and prevent clogging in the pipelines. This makes them indispensable for operations where reliability and low maintenance are crucial.

Water and Sewage Systems

Tilting Disc Check Valves are widely used in water and sewage systems to control the direction of flow and prevent contamination. They are installed in pipelines to stop backflow, which is essential for maintaining the integrity of clean water supplies. As a matter of fact, the valves’ ability to operate efficiently in both low and high-pressure conditions makes them versatile for various water management applications.

Power Generation

In power generation facilities, Tilting Disc Check Valves are vital for managing steam and water flow within the system. They prevent reverse flow, which can disrupt turbine operations and compromise efficiency. Their design withstands high temperatures and pressures, making them suitable for demanding power plant environments.
Tilting Disc Check Valve 26
Tilting Disc Check Valve 27

3 Considerations When Buying Tilting Disc Check Valve

01

Energy Efficiency

When buying a Tilting Disc Check Valve, consider its energy efficiency. These valves are designed with a streamlined body and a hydrodynamically shaped disc to reduce pressure loss. The flow area through the seat is 40% larger than the nominal pipe size, allowing for smoother flow and less energy consumption. This results in lower operating costs compared to traditional check valves.

02

Non-Slam Closing

One of the key considerations when choosing a Tilting Disc Check Valve is its non-slam closing feature. These valves utilize a short disc stroke of only 40 degrees, which helps prevent flow reversal and minimizes water hammer effects. Look for valves with an offset pivot design that provides a self-cushioning effect, reducing slamming and protecting your system from shock.

03

High Performance and Wear Resistance

High performance and durability are essential factors to consider when selecting a Tilting Disc Check Valve. The valve’s design should include disc stabilization and a lift-and-tilt action to minimize wear during operation. Additionally, choosing a valve made from durable, wear-resistant materials will increase its lifespan and reduce the need for frequent replacements.

FAQs of Tilting Disc Check Valve

Tilting Disc Check Valves hold several certifications, including ISO9001, ISO14001, ISO45001, API6D, and API607.
Each Tilting Disc Check Valve comes with a 3.1 certificate provided for free. At NTVAl, the certificate is sent for approval before delivery to verify the valve’s performance and quality.
Typically, a quotation for Tilting Disc Check Valves is provided within 2 days of receiving the inquiry.
The production time for Tilting Disc Check Valves generally takes around 5-8 weeks, depending on the valve size and quantity.

Frequently Asked Questions

Q1: What is the difference between a tilting disc and a swing check valve?

A tilting disc check valve closes faster due to its hinge position near the disc’s center of gravity.
This reduces water hammer and pressure surge compared to traditional swing check valves, making it more suitable for high-pressure or rapid flow reversal systems.

Q2: Can a tilting disc check valve be installed vertically?

Yes, it can be installed in horizontal pipelines and vertical pipelines with upward flow.
It is not recommended for vertical downward flow.

Q3: What size and pressure classes are available?

Standard sizes range from NPS 2 to NPS 32.
Pressure classes available include ASME Class 150 to Class 2500.

Custom configurations are available upon request.

Q4: Is this valve suitable for steam or power generation service?

Yes. Tilting disc check valves are commonly used in steam systems and power plants due to their fast closing characteristics and low water hammer risk.

Material selection should be based on operating temperature and pressure.

Q5: What documentation can you provide?

Available documentation includes:

  • EN 10204 3.1 MTR

  • PMI reports

  • Hydrostatic and seat test reports (API 598)

  • NDT reports

  • Third-party inspection (BV, SGS, Lloyd’s, etc.) upon request

Dive Deeper Into Our Resources

Looking for more diverse product options? Browse through our handpicked selections:

Still haven’t found what you’re looking for? Don’t hesitate to contact us. We’re available around the clock to assist you.

Shopping Cart