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.

Gate Valve
加载中...

API 6D Through Conduit Gate Valve Soft Seated 20 Inch 600LB

The API 6D through conduit gate valve is designed with 600 LB flange and gearbox connection. Made of carbon steel WCB, the 20 inch gate valve has soft seat design without diversion hole.

  • 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:

    ASTM A216 WCB
Inquiry now
Product Detail

Product Description

Type

Through Conduit Gate Valve

Size

20 Inch

Pressure

Class 600

Construction

Through Conduit, Soft Seated, Without Diversion Hole

Connection

RF Flange, Butt Weld

Operation

Gearbox

Body Material

ASTM A216 WCB

Design Code

API 6D

Pressure & Temp Code

ANSI B16.34

Test & Inspection Code

API 598

Medium

Water, Oil and Gas

Origin

China

Product Range

Body material: Carbon Steel, Stainless Steel, Alloy Steel

Normal diameter: 2’’ ~ 60’’ (DN50 ~ DN1500)

End connection: Butt Weld, Flange

Pressure range: 150lbs ~ 2500lbs (PN16 ~ PN420)

Operation: Handwheel, Gearbox, Electric, Pneumatic, Electro Hydraulic Actuator, Gas over oil actuator

Working temperature: -46℃~ +200℃

Seat Type: Meta to Metal Seat, Soft Seat

Material

Part Name

Material

Body & Bonnet

A216 WCB,CF8,CF8M,CF3,CF3M

Wedge

Alloy Steel(face harden treated), Stainless steel(with Co overlay)

Stem

Alloy steel(face erosion-resistant treated)

Seat

Alloy Steel(race Harden Treated,Beset F plastic),Steel(with Co overlay,Beset F plastic)

Packing

PTFE

O-Ring

NBR,FEP

 Dimension

About Dervos

Xiamen Dervos Valve Industry Co.,Ltd was founded in 2008. We are an doer at valve industry and accumulated ten years export experiences. Dervos alway focus on customer's feeling. We pay attention to what our customer paid. 

This kind of faith help Dervos people developing continuously.

Our Main Product Range

Our Valve products include Ball Valves, Butterfly Valves, Check Valves, Gate Valves, Globe Valves, and Plug Valves in various different materials, sizes, standards and types.

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
Carbon Steel Slab Gate Valve
Through Conduit Slab Gate Valve DN200 PN64 Flanged

The through conduit slab gate valve, designed as per DIN standard, has the diversion hole for pipeline cleaning. The PN64 parallel disc gate valve is made of carbon steel with RF flange and handwheel. Quick Detail Type Parallel Slab Gate Valve Nominal Diameter DN 200 Nominal Pressure PN 64 Construction Parallel Slabe Gate Valve, With Diversion Hole, Bolted Bonnet, Resilient Seat Connection Flange Operation Handwheel Operation Body Material Carbon Steel Medium Water, Oil and Gas Origin China Design Feature 1.Parellel disc 2.Soft seat and metal seat for choices 3.Full bore design for pigging and less pressure drop 4.Firesafe design 5.Self relieving function 6.Grease fitting for seat and stem 7.Double block and bleed capability 8.With vent and drain port 9.Tight sealing performance  Material Part Name Material Body & Bonnet A216 WCB, CF8, CF8M, CF3, CF3M Wedge Alloy Steel (face harden treated), Stainless Steel (with Co overlay) Stem Alloy Steel (face erosion-resistant treated) Seat Alloy Steel (face harden treated, beset F plastic), Steel (with Co overlay, best F plastic) Packing PTFE O-Ring NBR, FEP Sealing Grease  

Through Conduit Gate Valve
Through Conduit Expanding Gate Valve 18 Inch 600LB API6D

The API 6D through conduit gate valve is designed with double expanding wedges, metal to metal seat and diversion hole for pigging. The valve has good performance on sealing, less flow resistance and is suitable for application with some solids or particles. Quick Detail   Type Gate Valve Size 18'' Design Pressure ANSI 600 Construction Double Expanding Wedges, Fully Metal Seat, With Diversion Hole ConnectionType RTJ Flange OperationType Gearbox Operated Body Material WCB WedgeMaterial A105+STL+ENP StemMaterial 17-4PH SeatMaterial A105+STL+ENP Design Code API 6D Face to Face Dimension ASME B16.10 End Connection ASME B16.5 Pressure & Temp ASME B16.34 Medium Water, Oil and Gas Origin China

DN100 A516 Through Conduit Slab Gate Valve with Drain Valve
DN100 A516 Through Conduit Slab Gate Valve with Drain Valve

The DN100 through conduit slate gate valve is made according to EN558.It is ideal for pipeline applications requiring pigging capability.

Gate Valve
4" 150LB Gate Valve API603 Cast Steel HW-OP OS&Y CF8M

4" 150LB gate valve is made according to API 603 standard. The valve body is made of ASTM A351 CF8M+STL. It has the structural characteristics of bolt cover, elastic wedge and rising stem. Its test and inspection conform to API 598, and its operation mode is handwheel operation.

Gate Valve
API602 1" 300LB Forged Steel Gate Valve A105N HandWheel RF

1" 300LB gate valve is made according to API 602 standard. The valve body is made of ASTM A105N. It has the structural characteristics of bolted cover and rigid wedge. Its connection mode is RF integral flange. And it has hand wheel operation mode.

Check Valve
3" 600LB Swing Check Valve RF WCB API6D Cast Steel

3" 600LB check valve is made according to API 6D standard. The valve body is made of ASTM A216 WCB. It has the structural characteristics of bolt cover, swing type and full bore. Its connection mode is RF.

ASME B16.34 Y Type Globe Valve
ASME B16.34 Y Type Globe Valve Plug Type Disc 4 inch CL150

Y type globe valve. CF8 body/bonnet, F304 disc/stem, SS304+flexible graphite gasket and bronze bolt and nut. Plug type disc and Raised face flange connection.  Quick Detail  Type Globe Valve Size 4 inch DesignPressure CL150 Construction Y Type Globe Valve Connection Type Raised Face Flange Connection Operation Handwheel Design Code ASME B16.34 Face to Face ASME B16.10 Test & Inspection  API 598 Body Material CF8 Temperature Range -29~538℃ Application WOG

Check Valve
DN100 PN16 Lift Check Valve WCB EN12516-1 EN1092-1 B

DN100 PN16 check valve is made according to EN12516-1 standard. The valve body is made of ASTM A216 WCB+STL. It has the structural characteristics of lifting type with spring. Its connection mode is EN1092-1 B.

API600 CAST STEEL 10'' 300LB GATE VALVE BB RF OS&Y
API600 CAST STEEL 10'' 300LB GATE VALVE BB RF OS&Y

10’’ 300LB gate valve is made according to API 600 standard. The valve body is made of ASTM A217 C5 + STL. It has the structural characteristics of rising stem and bolt cover. The gate valve connected by flange has the operation mode of hand wheel.

API609 PFA Lined Butterfly Valve LUG FF 20”150LB
API609 PFA Lined Butterfly Valve LUG FF 20”150LB

This 20 inch butterfly valve is plastic lined type one. Its PFA lined disc and its PTFE seat ring enable it a excellent corrosion resistant performance. With a gearbox, it is easy to drive.

Butterfly Valve
42" 150LBS Three Eccentric Butterfly Valve API609 CF8M

42" 150LBS butterfly valve is made according to API 609 standard. The valve body is made of CF8M. It has the structural characteristics of triple eccentric, multi-level and NACE. Its connection mode is RF flange. And it has turbine operation mode.

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.

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