English

English

Get a Quote
Products

Hot Products

Company News

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.

Wafer Butterfly Valve
加载中...

Cast Steel Wafer Type Butterfly Valve 2 Inch 300 LB Lever

China Wafer Type Butterfly Valve Provider DVS Supplies Cast Steel Wafer Butterfly Valve, 2 Inch, Class 300, Lever Operation, for Air, Water, Steam and Gases.

  • Payment:

    30% when order confirmed, 70% before shipment
  • Product Origin:

    China
  • Color:

    Customization
  • Shipping Port:

    Shanghai, China
  • Lead Time:

    30~60 days Ex Works after order confirmation
  • Material:

    Cast Steel
  • Method of Operation:

    Lever
Inquiry now
Product Detail

Butterfly Valves can be used for special applications like isolation, throttling and control. Butterfly Valves are suitable for fluids like air, water, steam, gases, etc. 


Quick Details

Type

Butterfly Valve

Nominal Diameter

2 Inch

NominalPressure

300LB

Construction

Concentric Structure

Connection

Wafer Type

Design & Manufacture

API609

End to End Dimension

ASME B16.10.

Test & Inspection 

API 598.

Body Material

Cast Steel.

Temp. Range

-15~120°C

Media

air, water, steam, gases, etc


Technical Drawing


DVS Service

 

A good customer service is as valuable as product itself. In Dervos, we will offer a full range of customer service to make you feel easy when doing business with us.

 

Providing weekly production report

When production begins, you will get production report weekly, so that you can have good command of product status and report to your customer at the meantime.

 

Offering warranty of 18 months

18 months warranty period will be offered after shipment, no concern to purchase valve from Dervos.

 

Providing solutions within 3-days for complaints

All the complaints will be solved within 3 days, in this case, you can timely reply and solve problems for your customer, to relax them even when complaints happening.





Leave A Message

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.

Related Products
Cast Iron Concentric Butterfly Valve
Cast Iron Wafer Type Concentric Butterfly Valve PN10 DN200

The concentric lever operated butterfly valve is made of cast iron GG25, SS420 stem, and EPDM seat. The DN200 wafer butterfly valve is applicable for water. Quick Detail   Type Butterfly Valve Nominal Size DN200 Nominal Pressure PN10 Structure Concentric Type, EPDM Soft Seated Connection Type Wafer Type Operation Lever Operated Design Code EN 593 Face to Face EN 558 End Connection EN 1092 Test & Inspection EN 12266 Body Material Cast Iron GG25 Temperature Range -15℃~+150℃ Application Water, Oil, Gas Available Modifications for Butterfly Valves -Valve Nominal Pressure -Valve Nominal Size -Concentric Type and Eccentric Type -Soft Seat, Multi-Layer Metal Seat, Fully Metal Seat -Body & Trim Material -End Connection (Double Flanged,Wafer, Lug) -Available Operation (Bare Stem, Electric Actuator, Pneumatic Actuator, Lever or Wrench) -Customised Coating -Customised Packaging Product Application Oil & Gas Industry Dervos valves are fully involved in refining, oil and gas industries to handle very tough working environments. Petrochemical Industry We could also provide all kinds of valves in various materials, like stainless steel, Monel, titanium, and hastelloy to meet requirements of chemical industry. Power Station Industry Dervos could provide valves suitable for power station use with high pressure and temperature requirements.

4 Inch 150LB Lug Concentric Butterfly Valve Ductile Iron
4 Inch 150LB Lug Concentric Butterfly Valve Ductile Iron

Thisconcentricbutterfly valve is a lug type valve with threaded holes and can be used for many applications. The valve can be used as a stopper, a tap for discharging at the end of the pipeline, open/close and flow control.

Butterfly Valve
DN300 PN10 Concentric Butterfly Valve FF API609

DN300 PN10 butterfly valve is made according to API 609 standard. The valve body is made of GGG40. It has the structural characteristics of centerline and structural length of 78mm. Its connection mode is FF. And it has turbine operation mode.

Butterfly Valve
10" 150LB Concentric Butterfly Valve Lug GGG40 API609 Lever

10" 150LB butterfly valve is made according to API 609 standard. The valve body is made of GGG40. It has the structural characteristics of medium line type and lug type (threaded hole). Its connection mode is lug. And it has lever operation mode.

Butterfly Valve
DN1350 4 Bar Concentric Butterfly Valve GGG40 API609 G.O

DN1350 4 Bar butterfly valve is made according to API 609 standard. The valve body is made of GGG40. It has the structural characteristics of midline type. Its connection mode is flange connection according to AWWA C207 Class D. And it has gearbox operation mode.

Butterfly Valve
4" 150LB Concentric Butterfly Valve WCB Lug API609 Lever

4" 150LB butterfly valve is made according to API 609 standard. The valve body is made of A216 WCB. It has the structural characteristics of center line. Its connection mode is lug (UNC threaded hole, RF 125-250AARH). And it has lever (locking device) operation mode.

Butterfly Valve
14" 150LB Concentric Butterfly Valve WCB Wafer API609 Gear

14" 150LB butterfly valve is made according to API609 standard. The valve body is made of WCB+EPOXY COATING. It has the structural characteristics of center line. Its connection mode is wafer. And it has gear operation mode.

Wafer Check Valve
CF8M 20" 150LB Dual Plate Wafer Check Valve API594

20" 150LB wafer check valve is made according to API594 standard. The valve body is made of A351 CF8M. It has dual plate and built-in type structural features. Its connection mode is Wafer RF.

Gate Valve
Pressure Seal Gate Valve 2 Inch 4500 LB SW API 602

The high-pressure Class 4500 gate valve is designed with PSB and SW end connection. Made of CS A105, the 2 inch gate valve follows the inspection standard API 598 and design standard API 602. Dervos could offer customizing service by providing clients with valves in different sizes, materials, standards, design pressure, structure, operation type and connection type.

Swing Check Valve
6" 1500LB Cast Steel Swing Check Valve WCB API6D BW

6" 1500LB swing check valve is made according to API 6D standard. The valve body is made of WCB. It has the structural characteristics of swing type. It has BW connection mode.

Gate Valve
1" 800LB Forged Steel Gate Valve MNPT F304L API602 Handwheel

1" 800LB gate valve is made according to API602 standard. The valve body is made of F304L. It has the structural characteristics of bolt cover, rising stem, bracket and structural length of 311mm. Its connection mode is MNPT. And it has hand wheel operation mode.

flanged forged globe valve
Reduced Bore Forged Gate Valve, Welded Bonnet, Integral Flanged

China Welded Bonnet Gate Valve Producer Fabricates Reduced Bore Forged Steel Gate Valve, A105N, 1/2-4 Inch, 150-1500 LB, Welded Bonnet, Integral Flanged.

Leave a message

    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.

Home

Products

about

contact