English

English

Get a Quote
Products

Hot Products

Company News

Top 5 Industrial Valve Types Every Engineer Should Know in 2026
Top 5 Industrial Valve Types Every Engineer Should Know in 2026
2026-03-27

Choosing the right industrial valve type is one of the most critical decisions in system design. A poor selection—even when using high-quality valves—can lead to leakage, pressure loss, vibration, frequent maintenance, and long-term operational inefficiency. This guide covers the main industrial valve types, their applications, advantages, and limitations, along with practical insights to help you make the right valve selection for your project in 2026.   What Are Industrial Valve Types? Industrial valve types refer to different valve designs used to control, regulate, or isolate fluid flow in piping systems. Each type is engineered for a specific function—such as shut-off, throttling, or backflow prevention—and selecting the correct type is essential for system safety and efficiency.   5 Main Industrial Valve Types and Their Applications 1. Ball Valve Best for: Quick shut-off and low pressure drop Ball valves use a rotating ball with a straight-through bore. When fully open, they provide minimal resistance, making them one of the most efficient options for fluid transmission. Common applications:      ● Oil and gas pipelines      ● High-pressure systems      ● Frequent on/off operations Selection notes:      ● Full-port designs minimize energy loss      ● Metal-seated ball valves perform better in abrasive or high-cycle conditions   Avoid if:Precise flow control is required. Throttling with a ball valve can damage sealing surfaces over time.   2. Gate Valve Best for: Isolation service with minimal flow resistance Gate valves operate by lifting a gate out of the flow path. They are widely used in large-diameter pipelines where full open or full close operation is required. Common applications:      ● Long-distance transmission pipelines      ● Water treatment systems      ● High-temperature steam lines Selection notes:      ● Near-zero pressure drop when fully open      ● Wedge gate valves provide better sealing in high-temperature conditions   Avoid if:Frequent operation or throttling is required. Gate valves are not designed for repeated cycling.   3. Globe Valve Best for: Precise flow regulation Globe valves force fluid through a controlled flow path, allowing accurate throttling and stable flow control. Common applications:      ● Steam systems      ● High-temperature processes      ● Flow regulation applications Selection notes:      ● Excellent throttling performance      ● Stable operation under fluctuating flow conditions   Avoid if:Pressure drop must be minimized. Globe valves inherently create higher flow resistance.   4. Check Valve Best for: Automatic backflow prevention Check valves operate automatically based on flow directi...

Can Line Blind Valves Handle High-Temperature Steam Applications?
Can Line Blind Valves Handle High-Temperature Steam Applications?
2026-03-19

Recently, Dervos Valve helped a client in Hungary overcome a common challenge in industrial steam systems: how to safely isolate high-temperature pipelines without leakage or downtime.   Operating with saturated steam at around 250°C and exposed to temperatures as low as -39°C, the client’s system demanded a solution that was both robust and reliable. Traditional valves often failed to maintain a tight seal under such conditions, and conventional isolation methods required depressurizing the line, increasing downtime and operational risk.   To address these challenges, Dervos supplied a DN400 PN40 sliding line blind valve, engineered specifically for the project’s harsh conditions. The valve’s sliding blind mechanism allows operators to switch between flow and isolation positions without depressurizing the system, enhancing safety and efficiency during maintenance.   Built with forged 20GML steel and a metal-to-metal stainless steel sealing structure, the valve delivers reliable performance under both high-temperature steam and extreme outdoor climates. Its full-bore design minimizes flow resistance, while the worm gear manual actuator ensures smooth and controlled operation even at large sizes and high pressure ratings. Safety features such as anti-misoperation devices and protective blind plate structures further reduce the risk of errors during handling.   Since installation, the valve has enabled leak-free operation, safer maintenance procedures, and stable performance in extreme temperatures. Designed for a service life exceeding 30 years, it provides a long-term, low-maintenance solution, giving the client confidence in their steam system’s reliability and safety.   This project highlights how a carefully engineered sliding line blind valve can solve critical isolation challenges in high-temperature steam applications, combining operational safety, durability, and efficiency in one solution.

Are Gate Valves Full Port?
Are Gate Valves Full Port?
2026-03-13

In industrial piping systems, gate valves are generally considered low-resistance isolation valves. When the valve is fully open, the gate is completely withdrawn from the flow path, allowing the fluid to pass through with minimal obstruction.   However, from a strict engineering perspective, not all gate valves are classified as full port valves.   If the seat bore is equal to or very close to the pipeline internal diameter, the flow experiences little or no restriction. In this case, the valve can be considered full port (or near full port). This design is commonly used in oil and gas pipelines, water transmission systems, and other applications where low pressure drop is required.   If the seat bore is slightly smaller than the pipe internal diameter, a minor flow restriction will occur inside the valve. In such cases, the valve is more accurately described as reduced bore. This configuration is more common in smaller sizes or cost-optimized valve designs.   In engineering practice, a simple selection logic can be applied: ● If the system requires minimum flow resistance or pipeline pigging, the valve bore must match the pipeline diameter. ● If the valve is used for general isolation purposes, most standard gate valves can already meet the required flow capacity.   Therefore, a concise conclusion can be drawn: Gate valves are typically close to full port designs, but whether they are truly full bore depends on whether the seat bore equals the pipeline internal diameter.   QA   Q1: Are gate valves always full bore?Not necessarily. If the seat bore equals the pipe internal diameter, the valve can be considered full bore. If it is slightly smaller, it is classified as reduced bore.   Q2: Why do gate valves have relatively low flow resistance?When the valve is fully open, the gate is completely removed from the flow path, allowing the fluid to pass through in a nearly straight line, which results in low pressure drop.   Q3: Are gate valves suitable for high-flow pipelines?Yes. If the system requires low pressure drop, gate valves are commonly used.   Q4: Is the concept of full port the same for gate valves and ball valves?Not exactly. For ball valves, the bore size is determined by the ball port diameter, while for gate valves, it is mainly determined by the seat bore diameter.

4 150LB Gate Valve API603 Stainless Steel HW-OP OS&Y CF8M
加载中...

4" 150LB Gate Valve API603 Stainless 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.

  • 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 A351 CF8M+STL
  • Method of Operation:

    HW-OP
Inquiry now
Product Detail

Product Description

Type

Gate Valve

Size

4"

Pressure

150LB

Connection

RF

Operation

HW-OP

Body Material

ASTM A351 CF8M+STL

Design Norm

API 603

Face to face dimension

ASME B16.10

Flange dimension

ASME B16.5

Test & Inspection Code

API 598

Temperature

-29 ~ 425°C

Applicable Medium

Water, Oil and Gas

Features

1. The fluid resistance is small, and the sealing surface is less scoured and eroded by the medium;

2. Simple structure, short structure length and wide application range;

3. Good manufacturing process, high temperature and high pressure resistance, and many optional materials.

Technical Drawing

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

Dimension Checking

4" 150LB Gate Valve API603 Stainless Steel HW-OP OS&Y CF8M4" 150LB Gate Valve API603 Stainless Steel HW-OP OS&Y CF8M

Pressure Testing

4" 150LB Gate Valve API603 Stainless Steel HW-OP OS&Y CF8M4" 150LB Gate Valve API603 Stainless Steel HW-OP OS&Y CF8M

Nameplate & Packing

4" 150LB Gate Valve API603 Stainless Steel HW-OP OS&Y CF8M4" 150LB Gate Valve API603 Stainless Steel HW-OP OS&Y CF8M

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.

4" 150LB Gate Valve API603 Stainless Steel HW-OP OS&Y CF8M
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
Stainless Steel Flanged Gate Valve
Stainless Steel Gate Valve DIN 3352 PN16 OS&Y

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.

DN200 PN40 Stainless Steel Gate Valve EN1984 HW-OP BB RF OS&Y
DN200 PN40 Stainless Steel Gate Valve EN1984 HW-OP BB RF OS&Y

DN200 PN40 gate valve is made according to EN1984 standard. The valve body is made of 1.4571+STL. It has the structural characteristics of bolt cover, elastic gate, rising stem and bracket. Its connection mode is EN1092-1/B. And it has hand wheel operation mode.

DIN DN125 PN16 Stainless Steel Gate Valve HW-OP BB RF
DIN DN125 PN16 Stainless Steel Gate Valve HW-OP BB RF

DN125 PN16 gate valve is made according to DIN 3352 standard. The valve body is made of 1.4408. It has the structural characteristics of bolt cover, rising stem, elastic wedge, with SS316 insulation jacket and structural length of 325mm. Its connection mode is RF EN1092-1 B1. And it has hand wheel operation mode.

2 150LB Stainless Steel Gate Valve RF CF3 API600 Handwheel
2" 150LB Stainless Steel Gate Valve RF CF3 API600 Handwheel

2" 150LB gate valve is made according to API 600 standard. The valve body is made of A351 CF3. It has the structural characteristics of bolt cover, rising stem bracket. Its connection mode is RF. And it has handwheel operation mode.

DN100 PN40 5A Duplex Stainless Steel Gate Valve EN 1984
DN100 PN40 5A Duplex Stainless Steel Gate Valve EN 1984

DN100 PN40 5A Duplex Stainless Steel Gate Valve is made according to EN 1984 standard. The valve body is made of ASTM A995 5A+STL. It has the structural characteristics of Full Bore, Bolted Bonnet, Rising Stem with Yoke, Flexible Wedge. Its connection mode is EN1092-1 B1. And it has hand wheel operation mode.

DN100 PN40 Stainless Steel Gate Valve EN 1.4571 EN1984
DN100 PN40 Stainless Steel Gate Valve EN 1.4571 EN1984

DN100 PN40 Stainless Steel Gate Valve is made according to EN 1984 standard. The valve body is made of X6CrNiMoTi17-12-2. EN 1.4571 (AISI 316Ti) is widely used in medium- to high-temperature applications where resistance to intergranular corrosion and moderate chloride corrosion is required, especially in welded systems without post-weld heat treatment. Its connection mode is EN558. And it has Hand Wheel operation mode. Product Parameters   Type Stainless Steel Gate Valve Size DN100 Pressure PN40 Connection EN 558 Operation Hand Wheel Body Material X6CrNiMoTi17-12-2 Design Norm EN 1984 Face to Face dimension EN 1092 End connection EN 558 Test & Inspection Code EN 12266-1,2 Temperature -29 ~ 425°C Applicable Medium Water, Oil and Gas   Features 1.Made from EN 1.4571 stainless steel, offering excellent corrosion resistance and high-temperature stability for PN40 pressure applications. 2.Gate valve design compliant with EN 1984 ensures reliable shutoff and long service life in industrial piping systems.   Technical Drawing Dimension Checking Pressure Testing Spectrum Nameplate & Packing  

EN1984 DN150 PN40 Stainless Steel Gate Valve EN 1.4571
EN1984 DN150 PN40 Stainless Steel Gate Valve EN 1.4571

DN150 PN40 Stainless Steel Gate Valve is made according to EN 1984 standard. The valve body is made of X6CrNiMoTi17-12-2. EN 1.4571 (AISI 316Ti) is widely used in medium- to high-temperature applications where resistance to intergranular corrosion and moderate chloride corrosion is required, especially in welded systems without post-weld heat treatment. Its connection mode is EN558. And it has Hand Wheel operation mode.   Product Parameters Type Stainless Steel Gate Valve Size DN150 Pressure PN40 Connection EN 558 Operation Hand Wheel Body Material X6CrNiMoTi17-12-2 Design Norm EN 1984 Face to Face dimension EN 1092 End connection EN 558 Test & Inspection Code EN 12266-1,2 Temperature -29 ~ 425°C Applicable Medium Water, Oil and Gas   Features 1.EN 1.4571 stainless steel construction provides strong resistance to pitting and stress corrosion in aggressive media. 2.DN150 PN40 configuration designed to EN 1984 standard ensures stable operation and tight isolation in medium-pressure pipelines.   Technical Drawing Dimension Checking Pressure Testing Spectrum Nameplate & Packing

API 602 DN25 PN40 Stainless Steel Gate Valve F316Ti EN1092-1 B1
API 602 DN25 PN40 Stainless Steel Gate Valve F316Ti EN1092-1 B1

DN25 PN40 Flange Gate Valve is made according to API602 standard. The valve body is made of A182-F316Ti. Its connection mode is EN1092-1 B1. And it has Hand Wheel operation mode.   Product Parameters   Type Stainless Steel Gate Valve Size DN25 Pressure PN40 Connection EN1092-1 B1 Operation Hand Wheel Body Material A182-F316Ti Design Norm API 602 Flange dimension EN 1092 Material conform AISI/ASTM Test & Inspection Code EN 12266 Temperature -29 ~ 120°C Applicable Medium Water, Oil and Gas   Features 1.F316Ti stainless steel body provides enhanced resistance to intergranular corrosion and elevated-temperature service. 2.DN25 PN40 gate valve designed to API 602 with EN1092-1 B1 flange ensures stable operation and tight isolation in process pipelines.   Technical Drawing Dimension Checking Pressure Testing Spectrum Inspection Report

DN100 PN16 Stainless Steel Gate Valve RF DIN 3352 Handle
DN100 PN16 Stainless Steel Gate Valve RF DIN 3352 Handle

DN100 PN16 Stainless Steel Gate Valve is made according to DIN 3352 standard. The valve body is made of A351 CF8M+STL. It has the structural characteristics of Bolted Bonnet, Rising Stem, Flexible Wedge, Face-to-Face Dimensions per DIN 3202-F4. Its connection mode is RF. And it has handle operation mode.   Product Parameters   Type Stainless Steel Gate Valve Size DN100 Pressure PN16 Connection RF Operation Handle Body Material A351 CF8M+STL Design Norm DIN 3350 Face to Face DIN 3202-F4 Flange dimension EN 1092-1 Test & Inspection Code EN 12266 Temperature -29 ~ 425°C Applicable Medium Water, Oil and Gas Features 1.Rising stem Stainless Steel Gate Valve  design ensures precise flow control and tight shut-off. 2.Rated PN16 with RF flange and DIN 3352 compliance, operated by handle for easy manual control. Technical Drawing Dimension Checking Pressure Testing Painting Nameplate & Packing Inspection Report

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