Lubricated Plug Valve

Trusted Lubricated Plug Valve Manufacturer

NTVAL provides durable lubricated plug valves designed for demanding industrial applications. Known for reliable sealing and easy maintenance, they are ideal for large-scale projects. Our valves offer efficient, cost-effective solutions to keep operations running smoothly.

Reliable Lubricated Plug Valve

Quality Control

The PMI test checks the lubricated plug valve’s materials, confirming they match the required specifications using advanced tools.

PMI Test

The sealing test verifies the lubricated plug valve’s airtightness by checking for leaks with gas or liquid under pressure.

Sealing Test

The low emission test checks if the lubricated plug valve releases harmful gases, confirming its safety for the environment.

Low Emission Test

In the impact test, engineers strike the lubricated plug valve to verify its ability to handle force without damage.

Impact Test

Dimension inspection measures the lubricated plug valve’s size and shape, allowing it to match precise specifications for proper installation.

Dimension Inspection

The painting thickness test verifies that the lubricated plug valve’s paint layers are enough to protect it from corrosion.

Painting Thickness Test

PT (penetrant testing) detects surface cracks in the lubricated plug valve by applying a special liquid that reveals any hidden flaws.

PT

Material inspection evaluates the raw materials used for the lubricated plug valve, confirming they meet strict quality standards.

Material Inspection

Our Valve Applications in Key Industries

Discover how our advanced valve solutions improve flow control, delivering enhanced efficiency, safety, and strict quality assurance.

In the chemical processing industry, lubricated plug valves provide reliable control of corrosive fluids, helping maintain safety and efficiency in operations.

Chemical Processing

Lubricated plug valves offer excellent sealing capabilities, making them ideal for handling high-pressure and hazardous liquids in the petrol chemical industry.

Petrol Chemical

In O.P.G and nuclear industries, lubricated plug valves support critical systems by providing dependable, leak-free performance under extreme conditions.

O.P.G & Nuclear

The pulp industry benefits from lubricated plug valves, which handle thick, abrasive materials while preventing leaks and reducing the risk of clogs.

Pulp

Lubricated plug valves are tough enough for mining, managing slurries and abrasive fluids, making them perfect for this challenging environment.

Mining

In water and sewage systems, lubricated plug valves offer effective control over large flows of liquids, preventing contamination and improving reliability.

Water & Sewage

Lubricated plug valves withstand high temperatures and pressures in steam systems, providing a reliable solution for maintaining efficient steam flow.

Steam System

For boiling systems, lubricated plug valves offer consistent control over high-temperature fluids, preventing leaks and managing pressure safely and effectively.

Boiling System

Get More Versatile Valve

Gate Valve

Ball Valve

Globe Valve

Check Valve

Plug Valve

Butterfly Valve

Specifications

Size Range: NPS 2 to NPS 32
Pressure Range: 150LB to 2500LB
Design Standard: API599 / API6D
Type: Lubricated Plug Valve Manufacturer & Supplier

Technical Details

Operating Pressure: Up to 420 MPa
Maximum Operating Temperature: 325°C
Maximum Size: 600 mm

Conventional Oil-Lubricated Plug Valve

Positive Installation Position

In this type of valve, the plug cone is installed in a fixed position. High-pressure sealing oil is injected through a nozzle, creating a thin oil film between the valve body and the plug. This reduces friction, making the valve easier to open and close while ensuring a reliable seal.

Reduced Torque with Rectangular Flow Path

To make the valve easier to operate, the plug’s diameter is often reduced. This design usually results in a rectangular flow path, which lowers the torque needed to open and close the valve, though it slightly increases fluid resistance.

Enhanced Durability

The sealing surface of the plug cone is treated with either STL alloy welding or surface hardening technology. This improves its resistance to wear and corrosion, ensuring a longer service life.

Precision Surface Grinding

The plug cone and valve body’s sealing surfaces are finely ground to a mirror-like finish. This precision grinding further reduces the torque needed to operate the valve.

Inverted Pressure Balance Lubricated Plug Valve

Ansi Standard Sleeve-Type Plug Valve

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

Additional General Insights Here

Specs of Lubricated Plug Valve

Operating Pressure

Lubricated Plug Valves are built to handle high operating pressures, making them suitable for demanding industrial environments. NTVAL’s valves can operate effectively at pressures up to 420 MPa, which is critical for performance in high-pressure applications. This strong pressure capability helps in managing fluid flow under extreme conditions.

Operating Temperature

These valves are also designed to function at elevated temperatures, allowing them to be used in various high-temperature applications. The maximum operating temperature for a Lubricated Plug Valve is up to 325°C. Here’s the interesting part, this temperature range allows the valve to maintain its integrity and performance without compromising safety.

Valve Size

Lubricated Plug Valves come in a range of sizes to accommodate different flow requirements. The maximum size available for these valves is 600 mm, which allows for managing larger volumes of fluid in industrial applications. The various sizes offer a suitable option for different system needs, whether for medium-scale operations or large industrial projects.

Features of Lubricated Plug Valve

Friction Reduction

One of the standout features of Lubricated Plug Valves is their ability to reduce friction. These valves incorporate a specialized lubrication system that injects grease into the valve body. This lubrication forms a film between the moving parts, which helps to decrease friction during operation.

Grooved Disc Design

The Lubricated Plug Valve is equipped with a grooved disc design that plays a crucial role in the lubrication process. The grooves on the disc allow the lubricant to be evenly distributed across the valve’s moving parts. This allows the lubrication to be consistent and reach all necessary areas within the valve.

Check Valve Integration

Another key feature is the integration of a check valve within the lubrication system. This check valve prevents the reverse flow of lubricant, ensuring that the lubrication process remains efficient and reliable. This feature adds an extra layer of protection, letting the valve operate smoothly even under demanding conditions.

Benefits of Lubricated Plug Valve

Enhanced Sealing Capabilities

Lubricated Plug Valves offer enhanced sealing capabilities due to the lubrication system that helps maintain a tight seal. The lubricant fills any small gaps between the valve parts, which reduces the chances of leakage. NTVAL's Lubricated Plug Valves are beneficial in applications where maintaining a secure seal is critical to prevent fluid or gas escape.

Reduced Maintenance Costs

The efficient lubrication system in these valves reduces the wear on internal components, which means they require less frequent maintenance. This leads to lower overall maintenance costs and less downtime for repairs. So what’s the point? In industries where continuous operation is essential, the reduced need for maintenance makes these valves a cost-effective choice.

Smooth Operation Under High Load

Lubricated Plug Valves are designed to operate smoothly even under high load conditions. The lubrication minimizes the friction that typically increases with heavier loads, allowing the valve to function without excessive effort. This smooth operation is important in high-pressure systems where valve performance must remain consistent and reliable.

Applications of Lubricated Plug Valve

Oil and Gas Industry

Lubricated Plug Valves are widely used in the oil and gas industry due to their ability to handle high-pressure and harsh environments. These valves are essential for controlling the flow of oil, gas, and other fluids in pipelines and processing facilities. For example, they are often installed in upstream operations to manage the flow of crude oil from wells.

Water Treatment Facilities

Water treatment facilities also benefit from the use of Lubricated Plug Valves, particularly in high-pressure filtration systems. These valves are used to control the flow of water, from raw water intake to the final distribution of treated water. And on top of that, the smooth operation of these valves makes them an ideal choice for allowing efficient and reliable water treatment processes.

Chemical Processing Plants

In chemical processing plants, Lubricated Plug Valves manage the flow of various chemicals that can be corrosive. The lubrication system helps protect the valve components from corrosion, offering a longer service life even in challenging conditions. NTVAL’s Lubricated Plug Valves are designed to withstand the demands of chemical processing, offering reliable performance.

Pulp and Paper Industry

In the pulp and paper industry, Lubricated Plug Valves are used to regulate the flow of pulp, chemicals, and wastewater. These valves are effective in handling abrasive and viscous materials, which are common in pulp processing. The lubrication system helps reduce wear on the valve surfaces, making them suitable for continuous operation in demanding pulp and paper production environments.

3 Considerations When Buying Lubricated Plug Valve

01 With PTFE Sleeve

When buying a lubricated plug valve, the material of the internal components is an important consideration. Valves with a PTFE sleeve offer enhanced resistance to chemicals and corrosion, ideal for chemical plants. And you know what? The PTFE sleeve provides a low-friction surface that reduces wear and extends the life of the valve. Additionally, selecting the right material ensures optimal performance under specific operating conditions.

02 ISO 45001 Certified

Another crucial factor to consider is whether the valve is manufactured in compliance with safety and quality standards. ISO 45001 certification indicates that the valve is produced in a facility that prioritizes health and safety management. NTVAL’s commitment to ISO 45001 certification certifies that their lubricated plug valves are built with the highest safety and quality standards in mind.

03 Tapered Plug Design

The design of the valve, particularly the plug, is an important factor to consider. A tapered plug design is beneficial because it provides a tighter seal and reduces the risk of leakage. For example, in water treatment facilities, a tapered plug design allows the valve to be opened and closed efficiently. Choosing a valve with this design feature can enhance the overall performance and longevity of the system.

FAQS About Lubricated Plug Valve

1. What materials are used in NTVAL's Lubricated Plug Valves?

Our Lubricated Plug Valves are typically made from durable materials such as carbon steel, stainless steel, and ductile iron, offering excellent corrosion resistance and mechanical strength.

2. Can Lubricated Plug Valves handle high-pressure applications?

Yes, our Lubricated Plug Valves are designed to handle high-pressure conditions, making them suitable for demanding industrial environments.

3. What are the typical end connections for Lubricated Plug Valves?

Our Lubricated Plug Valves are available with various end connections, including flanged, threaded, and welded ends, to fit different piping configurations.

4. How resistant are Lubricated Plug Valves to corrosion and wear?

Our Lubricated Plug Valves are highly resistant to corrosion and wear, thanks to their strong construction and the protective properties of the lubricant, offering long-term reliability in corrosive environments.

Dive Deeper Into Our Resources

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

For some insightful reads, we’ve curated a list of recommended articles just for you:

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

Face to Face	ASME/ANSI B16.10
End Flange	ASME/ANSI B16.5
Butt Weld	ASME/ANSI B16.25
Class	ASME/ANSI CL150~CL900

CLASS 150 DIMENSIONS
SIZE (in.)	1/2″	3/4″	1″	1-1/4″	1-1/2″	2″	2-1/2″	3″	4″	5″	6″	8″	10″	12″	14″
SIZE (in.)	1/2″	3/4″	1″	1-1/4″	1-1/2″	2″	2-1/2″	3″	4″	5″	6″	8″	10″	12″	Unit:mm
L	108	117	127	140	165	178	190	203	229	254	267	292	330	356	381
H	180	180	185	200	210	215	250	270	300	340	365	400	450	510	590
W	400	400	500	500	600	600	820	820	300	300	320	320	350	380	380
W.T(kg)	10	12	14	17	19	21	29	33	48	75	98	125	171	230	370
CLASS 300 DIMENSIONS
SIZE (in.)	1/2″	3/4″	1″	1-1/4″	1-1/2″	2″	2-1/2″	3″	4″	5″	6″	8″	10″	12″	14″
SIZE (in.)	1/2″	3/4″	1″	1-1/4″	1-1/2″	2″	2-1/2″	3″	4″	5″	6″	8″	10″	12″	Unit:mm
L	140	152	165	178	190	216	241	283	305	381	403	419	457	502	762
H	180	180	185	200	210	215	250	270	300	340	365	400	450	510	590
W	400	400	500	600	600	820	1000	1000	300	300	320	320	350	380	380
W.T(kg)	12	14	14	19	21	24	31	36	61	86	130	190	255	380	560
CLASS 600 DIMENSIONS
SIZE (in.)	1/2″	3/4″	1″	1-1/4″	1-1/2″	2″	2-1/2″	3″	4″	5″	6″	8″	10″	12″	14″
SIZE (in.)	1/2″	3/4″	1″	1-1/4″	1-1/2″	2″	2-1/2″	3″	4″	5″	6″	8″	10″	12″	Unit:mm
L	165	190	216	229	241	292	330	356	432	508	559	660	787	838	889
H	180	180	185	200	210	215	250	270	300	340	365	400	450	510	590
W	400	400	500	500	600	600	820	820	300	300	320	320	350	380	380
W.T(kg)	14	16	18	20	24	29	35	47	91	129	210	320	660	920	1250
CLASS 900 DIMENSIONS
SIZE (in.)	1/2″	3/4″	1″	1-1/4″	1-1/2″	2″	2-1/2″	3″	4″	5″	6″	8″	10″	12″	14″
SIZE (in.)	1/2″	3/4″	1″	1-1/4″	1-1/2″	2″	2-1/2″	3″	4″	5″	6″	8″	10″	12″	Unit:mm
L	229	229	254	279	305	368	419	381	457	559	610	737	838	965	1029
H	180	180	185	200	210	215	250	270	300	340	365	400	450	510	590
W	400	400	500	60	600	820	1000	1000	300	300	320	320	350	380	380
W.T(kg)	17	19	21	24	30	37	44	65	110	160	255	380	810	1050	1460

Face to Face	ASME/ANSI B16.10
End Flange	ASME/ANSI B16.5
Butt Weld	ASME/ANSI B16.25
Class	ASME/ANSI CL150~CL900

CLASS 150 DIMENSIONS
SIZE (in.)	1/2″	3/4″	1″	1-1/4″	1-1/2″	2″	2-1/2″	3″	4″	5″	6″	8″	10″	12″	14″
SIZE (in.)	1/2″	3/4″	1″	1-1/4″	1-1/2″	2″	2-1/2″	3″	4″	5″	6″	8″	10″	12″	Unit:mm
L	108	117	127	140	165	178	190	203	229	254	267	292	330	356	381
H	110	115	115	135	140	150	165	180	380	460	520	580	620	680	760
W	175	175	175	220	280	305	350	405	300	300	320	320	350	380	450
W.T(kg)	8.5	9.5	10.5	12	14	18	22	26	40	60	70	130	219	381	570
CLASS 300 DIMENSIONS
SIZE (in.)	1/2″	3/4″	1″	1-1/4″	1-1/2″	2″	2-1/2″	3″	4″	5″	6″	8″	10″	12″	14″
SIZE (in.)	1/2″	3/4″	1″	1-1/4″	1-1/2″	2″	2-1/2″	3″	4″	5″	6″	8″	10″	12″	Unit:mm
L	140	152	165	178	190	216	241	283	305	381	403	419	457	502	762
H	110	115	115	135	140	150	165	180	380	460	520	580	620	680	760
W	175	175	175	220	280	305	350	405	300	300	320	320	350	380	450
W.T(kg)	9.5	10.5	12	14	16	20	24	29	53	75	85	185	230	390	550
CLASS 600 DIMENSIONS
SIZE (in.)	1/2″	3/4″	1″	1-1/4″	1-1/2″	2″	2-1/2″	3″	4″	5″	6″	8″	10″	12″	14″
SIZE (in.)	1/2″	3/4″	1″	1-1/4″	1-1/2″	2″	2-1/2″	3″	4″	5″	6″	8″	10″	12″	Unit:mm
L	165	190	216	229	241	292	330	356	432	508	559	660	787	838	889
H	110	115	115	135	140	150	165	180	380	460	520	580	620	680	760
W	175	175	175	220	280	305	350	405	300	300	320	320	350	380	450
W.T(kg)	11	13	17	20	23	27	31	36	72	98	141	245	330	515	710
CLASS 900 DIMENSIONS
SIZE (in.)	1/2″	3/4″	1″	1-1/4″	1-1/2″	2″	2-1/2″	3″	4″	5″	6″	8″	10″	12″	14″
SIZE (in.)	1/2″	3/4″	1″	1-1/4″	1-1/2″	2″	2-1/2″	3″	4″	5″	6″	8″	10″	12″	Unit:mm
L	229	229	254	279	305	368	419	381	457	559	610	737	838	965	1029
H	110	115	115	135	140	150	165	180	380	460	520	580	620	0D	760
W	175	175	175	220	280	305	350	405	300	300	320	320	350	380	450
W.T(kg)	13	16	21	24	28	32	40	47	91	117	165	285	420	610	860