Trusted Check Valve Manufacturer

NTVAL provides durable Check Valves designed to prevent backflow and maintain system integrity in industrial settings. Built for reliability and efficiency, our valves perform well in tough environments. Explore our range for dependable, high-performance solutions.

Reliable Check Valve

Control de calidad

The PMI test checks if the materials used in a check valve match the required specifications. It identifies the metal composition and confirms that the correct alloy is present for reliable operation.

Prueba PMI

The sealing test verifies that the check valve prevents any leakage under pressure. It tests how well the valve seals against fluids or gases, guaranteeing proper performance.

Prueba de estanquidad

This test measures the emissions of the check valve. By checking the amount of leakage, it helps confirm the valve meets environmental and safety standards for emissions control.

Prueba de bajas emisiones

The impact test evaluates how well the check valve can handle sudden force. This test confirms that the valve can withstand strong impacts without breaking or cracking.

Prueba de impacto

During dimension inspection, technicians check the check valve’s measurements. The goal is to confirm it matches the specified design dimensions for proper fit and functionality in its application.

Inspección dimensional

The painting thickness test examines how much coating is applied to the check valve. The paint protects the valve from corrosion, and this test checks even for adequate coverage.

Prueba de espesor de pintura

PT inspects the check valve for surface defects. It uses liquid dye to highlight tiny cracks or flaws that may not be visible to the eye, confirming the valve’s structural integrity.

PT

Material inspection confirms that the check valve’s materials meet the required standards. It assesses the quality of the materials to make sure they are durable and fit for long-term use.

Inspección de materiales

Aplicaciones de nuestras válvulas en sectores clave

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A check valve prevents backflow in the chemical processing industry, protecting equipment and maintaining a consistent flow of hazardous materials safely.

Procesado químico

In the petrochemical industry, check valves control the flow of liquids and gases. They stop contamination and maintain system efficiency, preventing costly damage.

Gasolina Química

Check valves are vital in O.P.G. and nuclear industries to keep fluids moving in one direction, ensuring critical safety during operations.

O.P.G & Nuclear

In the pulp industry, check valves help maintain steady flow and prevent blockages. They keep the production line running smoothly and efficiently.

Pulp

Check valves in the mining industry control water and slurry flow, preventing equipment damage and maintaining uninterrupted operations in harsh environments.

Minería

Check valves protect water and sewage systems by stopping backflow. They keep clean water separated from waste, maintaining system integrity and sanitation.

Agua y alcantarillado

Check valves in steam systems control pressure and flow direction. They prevent steam from flowing backward, which helps maintain system stability and safety.

Sistema de vapor

Check valves help boiling systems by controlling water and steam flow. They prevent backflow, avoiding pressure buildup and ensuring system safety.

Sistema de ebullición

Obtenga una válvula más versátil

Válvula de compuerta

Válvula de bola

Válvula de globo

Válvula de retención

Válvula de tapón

Válvula de mariposa

Main Parameter

Características de diseño

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Más información general

Specs of Check Valve

Temperatura

Check Valves are designed to operate within specific temperature ranges. They can typically handle temperatures from -20°F to 400°F. Some special materials can extend this range, making them suitable for extreme temperature conditions.

Connection Types

Check Valves are available with different connection types for easy integration into systems. Common connections include flanged, threaded, and welded ends. These connection types provide compatibility with various pipeline setups. Matter of fact, NTVAL offers a wide range of connection options to achieve seamless integration into your system.

Body Design

The body design of Check Valves varies to meet different system requirements. Common designs include wafer, full-body, and Y-pattern. Each design offers specific benefits, such as compact size for wafer designs or high flow efficiency for Y-pattern valves.

Features of Check Valve

One-Way Flow

Check Valves allow fluid to flow in only one direction. This feature prevents backflow, which can cause damage to pumps and other equipment. By maintaining a unidirectional flow, these valves protect the integrity of the entire system.

Diseño compacto

Many Check Valves feature a compact design, making them suitable for installations where space is limited. Their small footprint allows them to be used in a variety of settings without requiring significant modifications to existing pipelines.

Baja caída de presión

Check Valves are designed for minimal pressure drop, ensuring efficient fluid flow and reduced energy consumption. This is vital for maintaining optimal performance in high-flow systems. NTVAL's Check Valves provide this efficiency, ensuring smooth system operation.

Benefits of Check Valve

System Protection

The one-way flow feature of Check Valves protects systems from backflow, which can cause equipment damage and system failures. This protection is vital for maintaining operational efficiency and reducing maintenance costs.

Space Efficiency

The compact design of Check Valves saves space in crowded or complex installations. This space efficiency is particularly beneficial in large projects where every inch of space counts, making installation easier and more flexible.

Energy Savings

Check Valves' low pressure drop ensures high flow efficiency and reduced energy consumption. This leads to significant cost savings over time. NTVAL's Check Valves are designed to optimize energy use in large-scale operations.

Applications of Check Valve

Industria petroquímica

Check Valves are essential in the petrochemical industry for controlling the flow of various chemicals and by-products. They prevent backflow, which can cause contamination and equipment damage. These valves are designed to handle the high pressures and corrosive substances typically found in petrochemical processes.

Sistemas de vapor y ebullición

In steam and boiling systems, backflow of steam and hot water can cause significant equipment damage and safety hazards. Fortunately, there’s a simple solution. Check Valves are designed to control the flow and prevent backflow. They operate efficiently under high temperatures and pressures, making them ideal for industrial boiling applications.

O.P.G. & Nuclear

In O.P.G. (Oil, Power, and Gas) and nuclear industries, Check Valves play a crucial role in maintaining safety and efficiency. They are used to prevent backflow in critical systems, maintaining the proper flow of fluids and gases. NTVAL’s Check Valves are built to withstand extreme conditions and high radiation environments.

Industria papelera

In the pulp and paper industry, Check Valves are essential for handling liquids and slurries used in processing. They prevent backflow, which can lead to clogs and disrupt the production line. Their durability allows them to withstand the abrasive materials common in pulp processing, maintaining consistent flow with minimal maintenance.

4 Considerations When Buying Check Valve

01 Lifecycle Cost

When selecting a Check Valve, consider the total lifecycle cost, not just the initial purchase price. This includes maintenance, operational costs, and potential downtime. A higher initial investment in a durable, low-maintenance valve can result in long-term savings.

02 Response Time

Consider the response time of the Check Valve, especially in systems where rapid flow changes occur. An ideal response time is typically less than one second. Valves with quick response times can prevent pressure surges and protect sensitive equipment from damage.

03 Noise Levels

Check the noise levels produced by the valve during operation. Valves that operate quietly, ideally producing less than 85 decibels, are essential in applications where noise pollution must be minimized, such as in hospitals.

04 Valve Testing

When considering a Check Valve, it’s crucial to verify that it has undergone thorough testing for performance and safety. Here’s how it works, look for valves that come with test certificates, confirming they have passed pressure, leakage, and operational tests. Certification from bodies like API or ISO can indicate reliable testing standards. At NTVAL, we prioritize rigorous testing to deliver reliable and safe Check Valves for your systems.

Types of Check Valve

A Swing Check Valve uses a disc that swings on a hinge or shaft. This type of valve allows fluid to flow in one direction while preventing backflow. For example, it is commonly used in pipelines to stop the flow when the pump is off, avoiding reverse flow.

Lift Check Valves have a disc that moves vertically to block or allow flow. They are ideal for high-pressure systems. The main difference from Swing Check Valves is that they lift to open and close, providing a tighter seal.

A Piston Check Valve uses a piston to control flow direction. It operates efficiently in high-pressure environments and provides a tight seal. For instance, this type is often used in hydraulic systems due to its precise control and durability.

Válvula antirretorno de vaivén

Válvula antirretorno de elevación

Válvula de retención de pistón

Dual Plate Check Valves have 2 spring-loaded plates that open and close with the flow. They are compact and lightweight, making them easy to install. These valves also minimize water hammer effect compared to other types.

Non Slam Check Valves are designed to close smoothly without causing water hammer. They use a spring mechanism to assist with closing. This feature makes them ideal for applications where sudden flow stoppage is a concern.

A Non Return Check Valve prevents fluid from flowing backward. It is similar to a Swing Check Valve but designed for more general applications. This type is versatile and can be used in various systems to maintain flow direction.

Válvula de retención de doble placa

Válvula de retención antirretorno

Non Return Check Valve

Nozzle Check Valves are high-performance valves with a streamlined design. They use a spring-loaded disc to allow flow and prevent backflow. NTVAL offers Nozzle Check Valves that are efficient and reliable in high-pressure applications.

Wafer Type Check Valves are thin and fit between 2 flanges in a pipeline. They save space and are lighter than traditional check valves. These are suitable for systems where space and weight are important considerations.

Tilting Disc Check Valves have a disc that tilts to open and close. They provide a low-pressure drop and quick response. This design makes them effective in systems where rapid flow changes occur.

Stainless Steel Check Valves are made from corrosion-resistant material. They are ideal for harsh environments and chemical applications. These valves are durable and provide long-lasting performance in demanding conditions. So, if your system needs quick and efficient flow control, these valves are an excellent choice for maintaining smooth operation.

Válvula de retención de boquilla

Válvula de retención tipo wafer

Válvula antirretorno de disco basculante

Válvula de retención de acero inoxidable

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Main parameter of the Globe valve
ANSI Check valve	Class 150LB-2500LB SIZE 1/2″~48″
DIN Check valve	DN15-DN1000,PN16~PN250
JIS Check valve	DN15-DN100010K~40K
BS Check valve	DN15-DN1000,PN16~PN250
Design &Manufacture STD	BS1868, API6D, ASME B16.34, DIN3840/EN14341, ISO14313, API594, API602/ISO15761/BS5352, BS5160, JIS B2074, JIS B2084, JIS B2071
Face to Face STD	ASME B16.10, API594, EN558-1, DIN3202, BS2080, API6D, JIS B2002, GOST3706
End Connection STD	ASME B16.5, ASME B16.11, ASME B1.20.1, ASME B16.25, EN1092-1, DIN2501, DIN2543-2550, JISB2212-JISB2214, JIS2220 (Connection type: RF, FF, RTJ, BW, SW, NPT)
Norma de ensayo	API598, API6D, JISB2003, ISO5208, BS 6755, DIN3230, EN12266-1
Check ValveMaterial	Carbon Steel: A216 WCB, WCC, WC1, ASTM A105 Stainless Steel: A351 F8 (F304), CF8M (F316), CF3 (F304L), CF3M (F316L), CF8C (F347), F321, F321H, CK20 Duplex Stainless Steel: A351 CN7M (B473), CD4MCu (F50), CK3MCuN (F44), CG8M, A890-1A, 4A, 5A, 6A, A182 F44, F50, F51, F53, F310 Low Temperature Steel: A352 LCB, LCC, LCA, LC3, A350 LF2, LF3 High Temperature Steel: A217 WC6, WC9, WC5, WC11, C5, C12, C12A, A182 F22, F11, F5, F9 Bronze, Nickel Aluminum Bronze (NAB), Gunmetal: B148 C95500, C95800, C95400, C83600, C92200, ASTM B62, B61, B150 C63200 Alloy Steel: Monel 400, Monel K500, Alloy 20, 904L, CN7M, Inconel, Hastelloy B & C, Titanium alloy DIN Material: GS-C25/1.0619, 1.4408, 1.4308, C22.8
Check valve catalogue	Check Valve Catalogue (2.0Mb) DIN Check Valves Calalogue(1.2Mb)
Type of Check Valves	Swing Check Valves, Lift Check Valves, Wafer Dual Plate Check Valves, Tilting Disc Check Valves, Counter Weight Check Valves, Angle Check Valves, Piston Check Valves, Ball Check Valves, Lug Check Valves, etc.