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The Important Functions of Steam Trap Valves
The Important Functions of Steam Trap Valves
2024-04-17

A steam trap valve is a device designed on devices that require steam, which can automatically discharge condensate, air, and non condensable gases from the steam system and prevent steam from being discharged. Important Functions (1) Able to quickly remove condensate generated; (2) Prevent steam leakage; (3) Remove air and other non condensable gases. The necessity of using steam equipment to remove condensate and air: (1) Prevent water hammer: If there is condensate in the steam pipeline, it will be strongly impacted by the high-speed flowing steam on the pipe wall, valves, and steam equipment, causing damage or damage to the pipeline bends, valves, and steam equipment. (2) To prevent a decrease in the efficiency of steam using equipment: Steam using equipment (especially indirect heating devices) is aimed at effectively utilizing the latent heat of steam. Excessive condensate trapped in these devices comes into contact with the heating surface, reducing the heating area and uneven heating up and down, resulting in a significant decrease in equipment efficiency. (3) Prevent corrosion of steam inside equipment: Oxygen in water and air coming into contact with the equipment can cause chemical reactions, leading to rust corrosion. (4) Prevent damage to steam using equipment: Due to the different temperatures of steam and water, the condensed water inside the equipment generates temperature differences locally, causing temperature difference stress and equipment damage. Specific requirements for steam trap valves: (1) No steam leakage during the discharge of condensate; (2) It can eliminate all condensed water from any part of the steam system; (3) Capable of simultaneously discharging air and condensate; (4) Suitable for a wide range of pressures; (5) Easy to repair and maintain: simple structure with few moving parts; (6) High practicality: small size, light weight, long lifespan, low price, and no loss of emission capacity due to air and steam.

How to Prevent Damage to the Sealing Surface of High-pressure Ball Valves?
How to Prevent Damage to the Sealing Surface of High-pressure Ball Valves?
2024-04-12

In industrial production, high-pressure ball valves play a crucial role, and damage to the sealing surface may lead to leakage and performance degradation. Therefore, measures must be taken to prevent and protect the sealing surface. 1. Proper Operation and Usage When operating high-pressure ball valves, it is essential to follow the correct operating procedures and technical requirements. Do not exceed the rated pressure and temperature range of the valve. Avoid over-tightening the valve to prevent damage to the sealing surface or premature wear. 2. Regular Inspection and Maintenance Regularly inspect the sealing surface of the ball valve, especially valves exposed to high-pressure and high-temperature environments. Remove any debris and dirt around the valve to ensure the sealing surface is in good working condition. 3. Select Appropriate Sealing Materials Choose suitable sealing materials according to the requirements of the working environment. For instance, in high-temperature or chemically corrosive environments, select sealing materials that are resistant to high temperatures and corrosion. Regularly inspect the wear and aging of sealing materials and promptly replace damaged seals. 4. Preventing Foreign Object Intrusion Install filters or screens to prevent foreign objects from entering the valve body and damaging the sealing surface. Avoid conducting messy operations around high-pressure ball valves to reduce the intrusion of external impurities. 5. Timely Repair and Replacement If damage or wear is found on the sealing surface, stop using it immediately and proceed with repairing or replacing the seals to prevent leaks from causing more serious issues. 6. Training and Education Provide training to operators to ensure they understand the working principles and proper operation methods of high-pressure ball valves, reducing the risk of seal surface damage due to operational errors. 7. Minimize Frequent Opening and Closing Reduce the frequency of opening and closing high-pressure ball valves because frequent operation increases wear and fatigue on the sealing surface, leading to premature failure. Where possible, take measures to minimize valve cycling, such as planning production schedules rationally or employing automated control systems. 8. Regular Cleaning and Maintenance Perform regular cleaning and maintenance on high-pressure ball valves to remove accumulated dirt and deposits inside the valve body, ensuring the valve operates smoothly and the sealing surface remains clean. Regular cleaning effectively reduces contamination and corrosion of the sealing surface, extending the lifespan of the seals. 9. Choose High-Quality Ball Valves Select high-quality high-pressure ball valve products to ensure that the design and manufacturing quality of the valves meet standard requirements and possess excellent performance and reliable sealing capabilities. Valves from DERVOS typically offer longer lifespan and better sealing effects, effectively...

The Characteristics of Stainless Steel Trunnion Mounted Ball Valves
The Characteristics of Stainless Steel Trunnion Mounted Ball Valves
2024-03-28

Stainless steel trunnion mounted ball valve is a commonly used valve type, usually used to control the flow of fluids (such as water, gas, steam, etc.) in pipelines. Advantages: 1. High-pressure resistance. 2. Corrosion resistance due to stainless steel material. 3. Excellent sealing performance with advanced sealing technology. 4. Using PEEK valve seats, zero leakage, and light torque. 5. Robust structure for high reliability. 6. Convenient operation, including remote control, enhancing system efficiency. 7. Wide applicability across industries such as petroleum, chemical, natural gas, and metallurgy. Stainless steel trunnion mounted ball valve is a reliable valve type suitable for various industrial scenarios, especially in environments that require corrosion resistance and high temperature resistance accompanied by corrosion.

Plug Valves For Natural Gas Service
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Three Way Plug Valve Wrench 4 Inch 150LB RF Flanged

  • Payment:

    30% T/T When Order, 70% T/T Before Shipment
  • Product Origin:

    China
  • Color:

    Customization
  • Shipping Port:

    Shanghai China
  • Lead Time:

    30~55 days Ex Works After Order Confirmation
  • Material:

    Carbon Steel Plug Valve
  • Method of Operation:

    Lever Operated Plug Valve
Inquiry now
Product Detail

The 3 way plug valve is made of WCB body and stainless steel trim as per API 599. The plug valve that could connect any two ports together is applicable for natural gas service, water, oil and so on.


Quick Detail

Type

Plug Valve

Size

4''

DesignPressure

150LB

Construction

Three Way Type Plug Valve

ConnectionType

Flange Connection

Operation

Lever/Wrench

Design Code

API 599

Face to Face

ASME B16.10

End Connection

ASME B16.5

Pressure & Temp

ASME B16.34

Test & Inspection

API 598

Body Material

A216 WCB

TemperatureRange

-29℃~+425℃

Application

WOG


Related Knowledge
What are types of plug valves?


Lubricated Plug Valve
The plug gets lubricated by injecting sealant through injection fitting. The lubricant make sure the smooth movement and prevent the corrosion of plug. Usually, the seat of lubricated plug valve is metal, thus they can withstand higher temperature, available in larger size and higher pressure.


Non-Lubricated Plug Valve
A non-metallic sleeve or liner is installed in the body cavity of the plug valve. This sleeve reduce the fricion beween plug and body. Meanwhile it prevents the corrosion of plug. Due to non-metallice sleeve, the non-lubricated plug valve cannot be used in high temperature condition.


Multiway Plug Valve
The multiway plug valve is used for diverting flow in transfer lines. The multiway plug valves we often see are 3 way plug valve or 4 way plug valve.

3 Way Plug Valve Manufacturer


Dervos Packaging

Based on sufficient experience, we have developed complete packing specifications and procedures to ensure clear and safe transportation so that you can receive good and sound products. And this is also an important factor that we earn good reputation from our customers.


Safe and Clear Packaging of Dervos Valve


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If you are interested in our products and want to know more details,please leave a message here,we will reply you as soon as we can.

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80A JIS 10K Three Way Plug Valve RF CF8 API599

80A JIS 10K three-way plug valve is made according to API 599 standard. The valve body is made of A351 CF8. It has the structural characteristics of 3-way and L-shaped. Its connection mode is RF.

Ball Valve
10" 300LB Trunnion Mounted Ball Valve RF WCB API6D Turbine

10" 300LB ball valve is made according to API 6D standard. The valve body is made of ASTM A216 WCB. It has the structural characteristics of full bore, fixed ball, anti-fire, anti-static, and anti-flying valve stem design. Its connection mode is RF. And it has turbine operation mode.

Bolted Bonnet Forged Gate Valve
Forged Steel A105 Gate Valve Threaded 1 Inch 2500 LB

The 1 inch 2500 LB high pressure forged steel gate valve features in solid wedge, reduced port, bolted bonnet, handwheel, rising stem and female thread ( FNPT). The forged valves comply with API 602 and API 598. Quick Detail Type Gate Valve Size 1'' Pressure Class 2500 Construction BB, Rising Stem, OS&Y, Solid Wedge Connection Thread Connection Operation Handwheel Operated Body Material ASTM A105 TrimMaterial 13CR+STL Design API 602 End to End ASTM B16.10 Pressure & Temp ASTM B16.34 Connection End ASTM B1.20.1 Temperature Range -29℃~+425℃ Medium WOG Origin China Product Range Body material: Carbon Steel, Stainless Steel, Alloy Steel, Low Temperature Steel Normal diameter: 1/2’’~4’’ End connection: BW, SW, Flange, Threaded Pressure range: 150lbs~2500lbs (PN16~PN420) Operation: Handwheel, Bare Stem, With Actuators Working temperature: -46℃~ +425℃ How do we control quality during the manufacturing process? Casting Inspection:  Check the appearance, wall thickness, quantity, size and original material report etc. Must repair it meet MSS SP 55 before machining if unqualified.   Machining supervision: Supervise the production process and find potential problems to avoid wrong production or wrong production design by randomly visiting the factory and checking the manufacturing process.

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3" 150LB Dual Plate Wafer Check Valve API594 A995 5A

3" 150LB wafer check valve is made according to API594 standard. The valve body is made of A995 5A. It has the structural characteristics of built-in type and dual plate. Its connection mode is wafer type.

Forged Steel 3 Piece Trunnion mounted Ball Valve 600 LB API6D
Forged Steel 3 Piece Trunnion mounted Ball Valve 600 LB API6D

The API 6D ball valve is designed with trunnion mounted ball and full bore structure. The flanged ball valve has 600LB design pressure and 10 inch nominal size with gearbox operation mode, conforming to NACE MR0175 requirement.

API6D inverted pressure balanced lubricated plug valve 150LB
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Gate Valve
Pressure Seal Gate Valve 10'' 1500LB WCC BW PSB

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DN50 PN40 Cast Steel Globe Valve 1.0619 EN13709 EN1092-1 B

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Stainless Steel Flanged Gate Valve
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The stainless steel CF8M gate valve is designed with flange connection and handwheel operation per DIN 3352. The PN16 DN200 full port gate valve has OS&Y structure, resilient wedge and replaceable seat. Design Specifications Design and Manufacture: DIN 3352 End to End Dimension: DIN3202 Flange End: EN1092-1 Test & Inspection: EN12266-1/2 Design Feature -Full Bore Design -Superior flow rates & small friction loss -Low torque value for closing and opening the valve -Flexible wedge for better seating and ease of operation -Smooth finish and superior sealing for seat face -Every valve is manufactured with specific number on body for traceability Quick Detail Type Gate Valve Size DN 200 Pressure PN 16 Construction Bolted Bonnet, Rising Stem, Outside Screw and Yoke Connection Flange Connection Operation Handwheel Body Material Stainless Steel CF8M TrimMaterial Stainless Steel Temperature Range -268℃~+648℃ Medium Water, Oil and Gas Origin China Dervos Packaging Packaging is an important part we could never neglect. Dervos has a packaging process for each order to ensure a safe and clear delivery of the order.

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Cast Steel NPS 6 Class 150 Swing Check Valve RF WCB Metallic Seated

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    If you are interested in our products and want to know more details,please leave a message here,we will reply you as soon as we can.

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