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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.

Welded Ball Valve Forged Steel Metal Seated
加载中...

10 Inch Fully Welded Ball Valve Metal Seated Bare Stem

  • Payment:

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

    China
  • Shipping Port:

    Shanghai China
  • Lead Time:

    35~60 days Ex Works After Order Confirmation
  • Material:

    Carbon Steel Ball Valve ASTM A105N
  • Method of Operation:

    Bare Stem Ball Valve
Inquiry now
Product Detail
The 20 inch metal seated ball valve is designed for high temperature application or application with solid particulate. The valve has welded body, RF flange connection, bare stem for actuators, belonging to trunnion mounted type.

Quick Detail

Type

Ball Valve

Size

20"

Pressure

ANSI 600

Construction

Trunnion Type, One-Piece Body, Fully Welded, Metal to Metal Seat

Connection

Flanged

Operation

Bare Stem

Body Material

Forged Steel ASTM A105

Design Standard

API 6D

Pressure & Temp

ASME B16.34

Face to Face Dimension

ASME B16.10

End Connection

ASME B16.5

Inspection

API 598

Temperature Range

-29℃~+200℃

Media

Oil, Water, Gas


Dimension

CLASS 600
DN mm 50 65 80 100 150 200 250 300 350 400 450 500
NPS in 2 2.5 3 4 6 8 10 12 14 16 18 20
L
(RF)
mm 292 330 356 432 559 660 787 838 889 991 1092 1194
in 11.5 13 14 17 22 26 31 33 35 39 43 47
L1
(BW)
mm 292 330 358 432 22 660 787 838 889 991 1092 1194
in 11.5 13 14 17 559 26 31 33 35 39 43 47
L2
(RTJ)
mm 295 333 359 435 562 664 791 841 892 994 1095 1200
in 11.63 13.13 14.13 17.13 22.13 26.13 31.13 33.13 35 39.5 43.1 47.3
H mm 153 165 195 213 272 342 495 580 630 725 800 850
in 6.02 6.5 7.68 8.39 10.7 13.5 19.5 22.85 24.8 28.5 31.5 33.5
Do(W) mm 600 850 1250 1300 1500 *350 *350 *600 *600 *800 *800 *800
in 23.62 33.46 49.25 51.22 59 13.8 13.8 23.6 23.6 31.5 31.5 31.5
RF(Kg) 38 56 66 122 217 350 660 820 830 1160 1420 1650
BW(Kg) 31 51 58 117 200 327 605 790 800 1030 1305 1505
*Worm Gear or Electric actuator operated


Flanged Ball Valve Dimensions


Related Knowledge
When to use metal seated ball valve?

The seat of a metal seated ball valve is often stellite, stainless steel, or tungsten carbide instead of soft seat material like ptfe, peek, nylon, teflon, and devlon. These metal to metal seat ball valves are especially applicable for:
-Media with high temperature
-Media with solid particulate for high abrasion
-Media with severe condition, like high erosion and corrosion
-Media with high viscosity like heavy oil

Our Main Product Range
Dervos main products include ball valves, butterfly valves, check valves, gate valves, globe valves, and plug valves in different materials, sizes, standards and types as per clients’ requests.

Metal Seated Ball Valve Manufacturers



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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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