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...
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.
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.
Made as per API6D, the two pc floating ball valve, 3/4inch and 150LB, has different ends.Find your floating ball valve or other valves easily in Dervos.
Payment:
30% when order confirmed, 70% before shipmentProduct Origin:
ChinaColor:
CustomizationShipping Port:
Shanghai, ChinaLead Time:
30~60 days Ex Works after order confirmationMaterial:
F304Method of Operation:
LeverQuick Detail
|
Type |
Ball Valve |
|
Size |
3/4" |
|
Pressure |
ANSIClass 150 |
|
Construction |
Floating Ball, Two-Piece Body, Metal to Metal Seat |
|
Connection |
RF; External Thread * Internal Thread |
|
Operation |
Handle |
|
Body Material |
Cast Steel F304 |
|
Design Standard |
API6D |
|
Pressure & Temp |
ASME B16.34 |
|
F to FDimension |
ASME B16.10 |
|
End Connection |
ASME B16.25 |
|
Inspection |
API6D |
|
Temperature Range |
-29℃~150℃ |
|
Media |
Oil, Water, Gas |
Features
--Asymmetric Ends: X:G3/4 internal thread * X1:G3/4 external thread
--Split body
--Seats: Modified ball seats provide enhanced sealing performance and longer life
--Stem: Anti-static and proof Blow-out
-- Auto-adjustable packing
Technical Drawing
Dimension Check
Witness Tests
Nameplate & Packing
Our Main Product Range
With a complete product range, Dervos product lists cover gate, globe, check, ball, butterfly, check, plug valve and strainers. We can also provide marine valve, pressure reducing valve, control globe valve and so on.
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.
The 1 inch floating type ball valve is made of aluminum bronze C95800. The reduced bore ball valve has lever operation, RF flange, two piece type body. Quick Detail Type Ball Valve Size 1" Pressure ANSI 150 Construction Floating Ball, 2-Piece Body, Side Entry, Reduced Bore Connection Flanged End Operation Lever Operation Body Material Aluminum Bronze ASTM B148 C95800 Media W.O.G Available Modifications for Ball Valve -Nominal Pressure -Valve Size -Reduced Port & Full Port -Material of Body, Ball, Stem, Seat, Packing, Bolt and Nut -Valve Operation (Lever, Gearbox, Pneumatic or Hydraulic or Electric Actuator) -End Connection Type -Available Extended Stem -Customized Coating & Packaging -Modifications of Drain Port Dervos Packaging Good packing means good first impression. Just imagine how do you feel differently when seeing two boxes below? And you will know the reason why in Dervos we value packaging so much. In Dervos, we make sure- 1.Every valve is clean and dry. What do we do? -Clean the valve before packing -Add anti-rust oil -Add flange cover 2.No damage to valves in delivery. How do we achieve this? -Fix the valve with iron wire -Separate the valve with soft material -Layer the valve with plywood 3.Strong box and clear shipping mark
The 2 piece type floating ball valve has full port, fire safe design, anti blowout stem, ANSI 150 flange and lever operation. The carbon steel ball valve is designed with A216 WCB body, F316 stem and ball, PTFE soft seat. Quick Detail Type Ball Valve Size 4" Pressure 150 LB Construction Floating Type Ball, Two Piece Body, Full Bore Connection Raised Face Flange End Operation Wrench Operation Body Material Cast Steel WCB Trim Material SS316 &PTFE Design Standard API 6D Pressure & Temp Code ASME B16.34 Face to Face ASME B16.10 End Connection ASME B16.5 Inspection Code API 6D Temperature Range -29℃~+125℃ Media Water, oil and gas Material & Dimension No Part Name Carbon steel to ASTM Stainless Steel to ASTM WCB LCB CF8 CF8M CF3 CF3M 1 Body A216 WCB A352 LCB A351 CF8 A351 CF8M A351 CF3 A351 CF3M 2 Bonnet nut A194 2H A194 4 A194 8 3 Bonnet bolt A193 B7 A320 L7 A193 B8 4 Cap A216 WCB A352 LCB A351 CF8 A351 CF8M A351 CF3 A351 CF3M 5 Gasket SS Spiral Wound/graphite or SS Spiral Wound/PTFE 6 Ball A105/Ep.Cr or F6 A182 F6 A351 CF8 A351 CF8M A351 CF3 A351 CF3M 7 Seat Ring RPTFE or POM 8 Small spring Stainless Steel 9 Small ball A182 F304 A182 F316L 10 Stem A182 F6 A182 F6 A182 F304 A182 F316 A182 F304L A182 F316L 11 Stem Seat PTFE 12 Stem Packing PTFE or Graphite 13 Gland A182 F6 A182 F304 A182 F316 A182 F304L A182 F316L 14 Gland Bolt A193 B7 A193 B8 15 Galnd Flange A216 WCB A351 CF8 16 Positioning Plate Steel 17 Wrentch A216 WCB The material is according to ASTM standard CLASS 150 DN mm 15 20 25 40 50 65 80 100 150 200 250 NPS in 0.5 0.75 1 1.5 2 2.5 3 4 6 8 10 L (RF) mm 108 117 127 165 178 191 203 229 394 457 533 in 4.25 4.6 5 6.5 7 7.5 8 9 15.5 18 21 L1 (BW) mm 140 152 165 190 216 241 283 305 457 521 559 in 5.5 6 6.5 7.48 8.5 9.5 11.13 12 18 20.5 22 L2 (RTJ) mm 119 129.7 139.7 178 191 203 216 241 406 470 546 in 4.69 5.11 5.5 6.9 7.5 8 8.5 9.5 16 18.5 21.5 H mm 66 74 87 105 132 152 182 215 250 285 495 in 2.6 2.9 3.48 4.2 5.28 6.08 7.28 8.6 10 11.4 19.5 Do(W) mm 130 130 160 230 400 400 600 850 1100 1500 *350 in 5.1 5.11 6.3 9 15.74 15.74 23.62 33.46 43.3 59 13.8 RF(Kg) 2.3 3 4.5 7 15 20 25 40 97 160 240 BW(Kg) 2.0 2.5 3.8 5.8 12 17 21 36 92.8 154 227 *Worm Gear or Electric actuator operated Special Tests & Inspections In addition to regular hydraulic testing and air testing, Dervos could also do specials test as per clients’ requests, such as PT test, RT test, UT test, cryogenic test, low leakage test, fire proof test, and hardness test and so on.
DIN Ball Valve Full Pore RF Floaing Ball Fire Proof anti-static Lever WCB Body A105+ENP Ball 17-4PH Stem F304+Ni55 Seat X750 Spring Welding Flange Heating Jacket DN100 PN16 Quick Detail Type Ball Valve Size DN100 Design Pressure PN16 Construction Floating ball valve ConnectionType Raised Face Flange OperationType Lever Body Material WCB BallMaterial A105+Ni60 Stem Material 17-4PH SeatMaterial F304+Ni55 Design Code EN12516-1 Face to Face Dimension EN558-1 End Connection EN1092-1 B1 Pressure & Temp EN12266 Medium Water, Oil and Gas Origin China
API 6D ball valve is designed with an extended stem for special use, like underground ball valve or low temperature application. The length of the extended stem can be customized as per client's request. Quick Detail Type Ball Valve Size 2 Inch Pressure Class 600 Construction Split Body, Side Entry, Floating Type, Firesafe Design, Antistatic System, Anti-Blowout Stem, Extended Bonnet Connection RF Flange Operation Mode Lever Body Material A105N Trim Material SS304 Ball and Stem, RPTFE Seat Design & Manufacture API 6D Pressure & Temp Code ASME B16.34 End to End ASME B16.10 End Connection ASME B16.5 Inspection API 6D, API 598 Temperature Range -29℃~+200℃ Medium Oil, Water, Gas QC Process in Dervos Casting inspection： We can find out the raw material’s problem, such as shoddy casting, unqualified wall thickness, chemical composition and so on, which ensure that you will not be cheated. Machining Inspection: -Ensure machining accuracy -Find out machining mistake as early as possible, to win more time for repairing, remaking Final Inspection: -Final inspection activities include document and QC record review, visual examination, dimension check, pressure test, painting and packing check -Save time and cost: you don’t need to come and inspect in person and all the documents could be provided as proof. Inspection report will be provided free of charge including: -EN 10204 3.1 Mill Test Certificate -Inspection Report, showing the whole inspection process
DN25 PN100 Forged Steel A105 NPT Connection Way 2 Pieces Construction Full Pore Lever Operation Floating Ball Fire Safety Body and Bonnet A105 Ball a182 F304 Seat Ring PTFE Stem A182 F304 Stem O Ring Viton Packing Graphite Gland Stainless Steel Design and Manufacture ASME B16.34 Face to Face Design Manufacture Standard Manufacture Standard Screw and Dimension ANSI B1.20.1 Inspection and Test API598 Fire Safety Design API 607 Quick Detail Type Ball Valve Size DN25 Pressure PN100 Construction 2 Pieces Connection NPT Operation Mode Lever Body Material A105 Cover A105 Design & Manufacture ASME B16.34 End to End ASME B16.10 End Connection ANSI B1.20.1 Inspection API 598 Temperature Range -29℃~+538℃ Medium Oil, Water, Gas
The 2-piece floating ball valve, made in accordance with API 6A, has a design of reduced bore, fire safe design, anti blowout stem. With the RPTFE seat and PTFE O ring, the 4 inch WCB valve is certificate to serve you.
This ball valve, designed as per ASME B16.34, features two different connection ways--one side for RF and the other side NPT. The valve with floating ball, PTFE seat, SCS13 body and other features has an excellent sealing performance.
The forged steel ball valve is made of A105 body and 17-4PH trim with RTJ flange end and lever operation. This floating ball valve features reliable sealing performance and easy operation.
Made of F316, the floating ball valve is designed under the code of ASME B16.34. The valve consists of two-piece body, floating ball, lever operation, with good reliable sealing performance and small torque.
DN25 PN16 Forged Steel Floating Ball Valve is made according to ISO17292 standard. The valve body is made of ASTM-A105. It has the structural characteristics of Split Body, Floating Ball, Full Bore, Fire-safe, Anti-static, Blow-out Proof Stem. Its connection mode is RF . And it has hand wheel operation mode.
Made of CF8M, the 2 PC valve is designed according to ASME B16.34. Mixed with 15 percent of fibreglass, the RPTFE seat of the valve is more eligible to bear high temperature and high corrosive working condition.
China Flanged End Ball Valve Producer,Dervos Offers Flanged End Ball Valve, ASTM A350 LF6, Class 600, 1/2 Inch, Two Piece, Forging, API 608, BS 5351, ASME B16.34.
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