Non Slam Check Valve

Trusted Non Slam Check Valve Manufacturer

NTVAL provides Non Slam Check Valves designed to prevent backflow and water hammer, ensuring smooth operation in tough environments. Our precision-engineered valves close without slamming, reducing system wear. Trust NTVAL for reliable, efficient, and safe valve solutions.

Reliable Non Slam Check Valve

Controle de qualidade

The PMI test confirms that each Non Slam Check Valve contains the correct materials, aligning with specifications for dependable performance and durability.

Teste PMI

During the sealing test, we check that the Non Slam Check Valve completely blocks any reverse flow, keeping fluid movement strictly controlled.

Teste de vedação

The low emission test checks for minimal leaks, helping the Non Slam Check Valve meet environmental standards for cleaner, safer operation.

Teste de baixa emissão

This impact test assesses the Non Slam Check Valve’s toughness, verifying it withstands sudden forces without compromising its reliable flow control.

Teste de impacto

Dimension inspection verifies that each Non Slam Check Valve fits exactly, supporting a tight seal and smooth operation in its system.

Inspeção de dimensões

The painting thickness test measures the valve’s coating, ensuring it has strong corrosion protection for a longer, reliable service life.

Teste de espessura da pintura

Penetrant testing highlights any small surface flaws on the Non Slam Check Valve, which could weaken its overall strength under pressure.

PT

Material inspection guarantees that all components of the Non Slam Check Valve meet quality standards, supporting durable, safe operation over time.

Inspeção de materiais

Nossas aplicações de válvulas nos principais setores

Descubra como nossas soluções avançadas de válvulas melhoram o controle de fluxo, proporcionando maior eficiência, segurança e garantia de qualidade rigorosa.

Non Slam Check Valves prevent dangerous backflow in chemical plants, ensuring safe one-way fluid control, even with harsh, reactive substances.

Processamento químico

For petrochemical plants, Non Slam Check Valves manage high-pressure fluids, keeping dangerous gases or oils from flowing backward into systems.

Química da gasolina

In nuclear settings, Non Slam Check Valves protect pressurized systems from backflow, reducing risks by maintaining strict fluid flow direction.

O.P.G. e Nuclear

Non Slam Check Valves control the direction of pulp flow, resisting blockages and providing steady performance, even with thick fluids.

Polpa

In mining, Non Slam Check Valves prevent backflow, handling abrasive materials and protecting against reverse pressure that could disrupt operations.

Mineração

Non Slam Check Valves offer secure flow control in water and sewage systems, keeping fluids from reversing and causing contamination.

Água e esgoto

Non Slam Check Valves control steam flow, stopping backflow that could damage equipment and reduce efficiency in industrial steam applications.

Sistema de vapor

In boiling systems, Non Slam Check Valves handle high temperatures and keep hot water from reversing, supporting safe, stable operations.

Sistema de ebulição

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Learn More About Non Slam Check Valve

Resilient or Metal Seat
Faixa de tamanho: NPS 2 to NPS 36
Faixa de pressão: 150LB to 2500LB
Design STD.: ASME B16.34
Non Slam Check Valve Manufacturer

Recursos

Minimal Moving Parts

The disc is the only moving part, minimizing wear and enhancing durability.

Axial Disc Movement

The disc and seating configuration provide a streamlined flow path with a venturi effect, resulting in a low-pressure drop.

Short Stroke of Spring-Assisted Disc

The inlet flow velocity moves the disc axially with a short stroke. As the flow velocity reduces, a compressed spring initiates valve closure, providing a quick response.

Customizable Spring Options

The choice of spring affects critical velocity and valve response. Selection is made based on engineering evaluation of specific applications. In the absence of this data, a standard spring will be provided.

Characteristics

The dual plate check valve, also known as the zero velocity valve, addresses the shortcomings of traditional check valves. It is highly effective, versatile for any fluid and service conditions, easy to manage, and can be installed in any pipe structure without restrictions.

Standard Materials of Construction

Dimension

Especificações

The non-slam check valve, also known as a nozzle check valve, automatically opens and closes its disc based on the flow of the medium. It’s designed to reduce noise when opening or closing. As an automatic valve, its main functions are to prevent backflow, stop the pump and motor from reversing, and release the medium from a container. It can also be used in supply lines where the pressure in an auxiliary system may rise above the main system pressure.

The non-slam check valve ensures that the flow only moves in one direction, preventing reverse flow. The valve disc opens when fluid pressure flows in the correct direction and closes when the flow reverses, cutting off the flow. However, this valve is not suitable for media containing solid particles or high viscosity.

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3 Considerations When Buying Non Slam Check Valve

Specs of Non Slam Check Valve

Construção do material

Non Slam Check Valves are made from durable materials like stainless steel or ductile iron. These materials help the valve withstand harsh environments and resist corrosion over time. NTVAL uses high-quality materials to guarantee long-lasting performance in industrial applications.

Flow Rate Capacity

The flow rate capacity of a Non Slam Check Valve determines how much fluid it can handle efficiently. These valves can manage flow rates ranging from 10 to 2,000 GPM, depending on the size and application. The precise design of the valve allows the flow rate to be optimized for different pressure conditions, preventing backflow and maintaining system integrity.

Faixa de temperatura

Non Slam Check Valves can operate within a wide temperature range, from -20°F to 400°F. This versatility makes them ideal for use in both hot and cold fluid systems. And on top of that, the ability to handle extreme temperatures guarantees the valve’s functionality in diverse industrial applications.

Features of the Non Slam Check Valve

Spring-Assisted Closure

The Non Slam Check Valve features a spring-assisted closure mechanism, which activates as the flow velocity decreases. This design prevents backflow and eliminates the risk of water hammering for a safe and controlled shutdown of the valve.

Axial Disc Movement

The valve’s design features an axial disc movement, which means the disc moves in a straight line rather than swinging. Here’s why that’s important: this movement minimizes wear and tear, allowing for a smoother flow of fluids and reducing maintenance needs over time.

Versatile End Connections

NTVAL's Non Slam Check Valve is available with multiple end connection options, such as flanged, butt-weld, and RTJ ends. This versatility makes it easy to integrate the valve into various piping systems, whether in an oil refinery or a chemical processing plant.

Benefits of the Non Slam Check Valve

Redução dos custos de manutenção

With its few moving parts and durable construction, the Non Slam Check Valve requires less maintenance than traditional valves. For instance, this simplicity reduces the risk of wear and tear, leading to fewer repairs and replacements. The long-lasting design allows the valve to perform reliably over time, reducing the overall cost of ownership.

Increased Safety and Reliability

The Non Slam Check Valve's rapid response and anti-slam features increase the safety and reliability of industrial systems. By preventing water hammering and maintaining smooth operation, the valve protects equipment and personnel from potential hazards. Its durable materials and precision engineering offer reliable performance under varying conditions.

Improved Efficiency

The Non Slam Check Valve's low-pressure drop feature maintains a steady and efficient flow of oil. This reduces the energy required to pump fluids through the system, leading to lower operational costs. The valve's efficiency contributes to consistent production levels, making it ideal for demanding industrial applications.

Applications of Non Slam Check Valve

Sistemas de vapor e ebulição

In steam and boiling systems, Non Slam Check Valves are essential for managing the flow of steam and hot water, helping to avoid reverse flow. This is particularly important for preventing water hammer, which can damage pipes and boilers. Built to withstand high temperatures and pressures, these valves help maintain safe and reliable operation in steam networks.

Geração de energia

Power plants, particularly those using steam turbines, rely on Non Slam Check Valves to manage the flow of steam and cooling water. These valves help prevent water hammer, which can cause severe damage to turbine blades and other critical components. And you know what? By maintaining a steady flow, the valve supports the plant’s overall efficiency and helps avoid costly downtime.

Sistemas HVAC

Non Slam Check Valves are also used in Heating, Ventilation, and Air Conditioning (HVAC) systems to control the flow of refrigerants and water. For example, in large commercial buildings, these valves help maintain the correct pressure levels, providing efficient heating and cooling throughout the facility. This application is essential for providing a comfortable environment while optimizing energy use in the building.

Instalações de tratamento de água

In water treatment facilities, the Non Slam Check Valve is used to control the flow of water in different stages of purification and distribution. Its ability to prevent backflow allows treated water to remain uncontaminated, maintaining the quality of the water supply. NTVAL’s valves are particularly valued for their reliability in these applications, where consistent operation is essential.

3 Considerations When Buying Non Slam Check Valve

01 API Certified

When buying a Non Slam Check Valve, it’s important to make sure it is API certified. An API (American Petroleum Institute) certification means that the valve has been tested and proven to meet the specific safety and performance standards required in the oil and gas industry. Choosing an API-certified valve certifies that the product is reliable and safe for use in challenging environments, reducing the risk of failures.

02 Venturi Pattern Design

Another important consideration is the Venturi pattern design of the valve, which impacts the efficiency of fluid flow. This design reduces pressure drop across the valve, providing a steady and efficient flow of liquids or gases. For large projects like chemical processing plants, this design helps optimize energy use by minimizing resistance, which is critical for maintaining consistent production levels.

03 Ultra-Fast Closing Action

The ultra-fast closing action of a Non Slam Check Valve is essential for preventing water hammer and protecting the integrity of the pipeline. This is particularly important in systems where sudden changes in flow can occur, such as in power generation plants. My point is that choosing a valve with this capability allows your project’s pipeline to remain secure, minimizing the risk of damage and costly downtime.

Perguntas frequentes

1. What are the maintenance requirements for a Non Slam Check Valve?

The maintenance requirements for these valves are minimal due to their simple design and few moving parts. Regular inspections should be conducted to check for wear and tear, especially on the disc and spring components.

2. How long is NTVAL's quality guarantee period for Non-Slam Check Valves?

Our quality guarantee period for these valves is 18 months from the delivery date. This warranty period provides assurance that the valves will perform reliably over time.

3. What certifications do Non Slam Check Valves hold?

Our Non Slam Check Valves are certified under various international standards, including ISO9001, ISO14001, ISO45001, API6D, and API607.

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Part Name	Standard Carbon Steel	Low TemperatureCarbon Steel	Aço inoxidável
Valve Body	ASTMA216 WCB	ASTMA352 LCC	ASTMA351CF8M/316 Stainless Steel
Difuser	ASTMA216 WCB	ASTMA352 LCC	ASTMA351 CF8M/316 Stainless Steel
Valve Disc	ASTMA351CF8M/316 Stainless Steel	ASTMA351 CF8M/316 Stainless Steel	ASTMA351 CF8M/316 Stainless Steel
Assento	Alloy625	Alloy625	Alloy625
HelicalSpring	AlloyX-750	AlloyX-750	AlloyX-750
RadialGuide	AlloyX-750	AlloyX-750	AlloyX-750
Parafuso	ASTMA193 B8M	ASTMA320 B8M	ASTMA193 B8M
CentalTie Boit	ASTMA193 B7M	ASTMA320 L7M	ASTMA193 B8M
Guide Bushing	Gr.630Stainless Steel	Gr.630 Stainless Steel

Cara a cara	ASME/ANSI B16.10
Flange de extremidade	ASME/ANSI B16.5
Solda de topo	ASME/ANSI B16.25
Classe	ASME/ANSI CL150~CL2500

DIMENSÃO CLASSE 150							DIMENSÃO DA CLASSE 300
Padrão VATAC				API 6D Standard			Padrão VATAC					API 6D Standard
SIZE (IN)	R.T.J	R.F	W.E	R.T.J	R.F	W.E	SIZE(IN)	R.T.J	R.F	W.E	R.T.J	R.F	W.E
						Unidade: mm							Unidade: mm
2				216	203	203	2				283	267	267
3				254	241	241	3				333	317	317
4				305	292	292	4				371	356	356
6	266	253	265	368	356	356	6	269	253	265	460	444	444
8	308	295	305	508	495	495	8	311	295	305	549	533	533
10	378	365	380	635	622	622	10	381	365	380	638	622	622
12	448	435	450	711	698	698	12	451	435	450	727	711	711
14	488	475	490	800	787	787	14	491	475	490	854	838	838
16	558	545	560	876	864	864	16	561	545	560	879	864	864
18	623	610	630	991	978	978	18	626	610	630	994	978	978
20	688	675	700	991	978	978	20	694	675	700	1035	1016	1016
24	823	810	835	1308	1295	1295	24	832	810	835	1368	1346	1346
28		549	579		8441	8441	28	970	945	975	1524	1499	1499
30		101	5401		4251	4251	30	1035	1010	1045	1619	1594	1594
32		1080	1115				32	1109	1080	1115
36		1215	1250		1956	1956	36	1244	1215	1250	2112	2083	2083
40		1350	1390				40		1350	1390
42		1415	1460				42		1415	1460
48		1615	1650				48		1615	1650

CLASS 400 DIMENSION							CLASSE 600 DIMENSÃO
Padrão VATAC				API 6D Standard			Padrão VATAC					API 6D Standard
SIZE (IN)	R.T.J	R.F	W.E	R.T.J	R.F	W.E	SIZE(IN)	R.T.J	R.F	W.E	R.T.J	R.F	W.E
						Unidade: mm							Unidade: mm
2				295	292	292	2				295	292	292
3				359	356	356	3				359	356	356
4				409	406	406	4				435	432	432
6	256	253	265	498	495	495	6	256	253	265	562	559	559
8	298	295	305	600	597	597	8	298	295	305	664	660	660
10	368	365	380	676	673	673	10	368	365	380	791	787	787
12	438	435	450	765	762	762	12	438	435	450	841	838	838
14	478	475	490	892	889	889	14	478	475	490	892	889	889
16	548	545	560	905	902	902	16	548	545	560	994	991	991
18	613	610	630	1019	1016	1016	18	613	610	630	1095	1092	1092
20	681	675	700	1060	1054	1054	20	681	675	700	1200	1194	1194
24	819	810	835	1407	1397	1397	24	819	810	835	1407	1397	1397
28	958	945	975	1613	1600	1600	28	958	945	975	1613	1600	1600
30	1023	1010	1045	1664	1651	1651	30	1023	1010	1045	1664	1651	1651
32	1096	1080	1115				32	1096	1080	1115
36	1231	1215	1250	2099	2083	2083	36	1231	1215	1250	2099	2083	2083
40		1350	1390				40		1350	1390
42		1415	1460				42		1415	1460
48		1615	1650				48		1615	1650

CLASSE 900 DIMENSÃO							CLASS 1500 DIMENSION
Padrão VATAC				API 6D Standard			Padrão VATAC					API 6D Standard
SIZE (IN)	R.T.J	R.F	W.E	R.T.J	R.F	W.E	SIZE(IN)	R.T.J	R.F	W.E	R.T.J	R.F	W.E
						Unidade: mm							Unidade: mm
2				371	368	368	2				371	368	368
3				384	381	381	3				473	470	470
4	238	235	238	460	457	457	4	238	235	238	549	546	546
6	306	303	306	613	610	610	6	306	300	306	711	705	705
8	344	341	344	740	737	737	8	344	335	344	841	832	832
10	394	391	394	841	838	838	10	394	385	394	1000	991	991
12	451	448	451	968	965	965	12	451	435	451	1146	1130	1130
14	494	485	494	1038	1029	1029	14	494	475	494	1276	1257	1257
16	610	558	610	1140	1130	1130	16	567	545	567	1407	1384	1384
18	632	619	632	1232	1219	1219	18	632	610	632	1559	1537	1537
20	697	684	697	1334	1321	1321	20	697	675	697	1686	1664	1664
24	838	819	838	1568	1549	1549	24	838	810	838	1972	1943	1943

CLASS 2500 DIMENSION
Padrão VATAC				API 6D Standard
SIZE (IN)	R.T.J	R.F	W.E	R.T.J	R.F	W.E
						Unidade: mm
2	–	–	–	454	451	451
3	–	–	–	584	578	578
4	304	295	253	683	673	673
6	403	390	324	927	914	914
8	446	430	367	1038	1022	1022
10	562	540	424	1292	1270	1270
12	617	595	486	1445	1422	1422