A butterfly valve is a quarter-turn rotary valve that uses a circular disc mounted on a rotating shaft to control fluid flow. When the valve is opened, the disc rotates parallel to the flow direction, allowing fluid to pass through. When closed, the disc rotates 90 degrees and blocks the pipeline.

Due to its compact structure, lightweight design, low installation cost, and fast operation, butterfly valves are widely used in large-diameter piping systems where space and efficiency are important considerations.

DTC supplies industrial butterfly valves including wafer butterfly valves, lug butterfly valves, and flanged butterfly valves in various materials such as ductile iron, carbon steel, stainless steel, and alloy steel.

Our butterfly valves are suitable for applications requiring reliable shut-off, flow regulation, and automated control.

Key Features of Butterfly Valve

Compact and Lightweight Design

Compared with gate and globe valves, butterfly valves require less installation space and are lighter in weight, reducing transportation and installation costs.

Fast Quarter-Turn Operation

The valve can be fully opened or closed with a 90-degree rotation, allowing quick operation.

Cost-Effective Large Diameter Solution

Butterfly valves are an economical choice for medium and large pipeline systems.

Flexible Operation Options

Available operation methods:

• Manual handle
• Gear operator
• Pneumatic actuator
• Electric actuator
• Hydraulic actuator

Excellent Flow Control

The disc position can be adjusted to regulate flow in many industrial applications.

Technical Specifications

Types of Butterfly Valves

Wafer Butterfly Valve

A wafer butterfly valve is installed between two pipe flanges and secured using flange bolts.

Advantages:

• Compact design
• Lightweight
• Lower cost
• Easy installation

Typical Applications:

• HVAC systems
• Water treatment
• Fire protection
• General industrial piping

Lug Butterfly Valve

A lug butterfly valve has threaded inserts around the valve body, allowing installation with individual bolts.

Advantages:

• Suitable for end-of-line service
• Allows pipeline maintenance
• Better support for larger systems

Typical Applications:

• Industrial pipelines
• Chemical processing
• Marine systems

Flanged Butterfly Valve

A flanged butterfly valve connects directly to pipeline flanges.

Advantages:

• Strong connection
• Suitable for larger sizes
• Easy maintenance

Typical Applications:

• Water plants
• Power stations
• Industrial facilities

Triple Offset Butterfly Valve

A triple offset butterfly valve uses an advanced disc and seat design to eliminate rubbing between sealing surfaces.

Advantages:

• Metal-to-metal sealing
• High temperature resistance
• Excellent durability

Typical Applications:

• Steam systems
• Oil & gas
• High-temperature processes

Common Materials

Ductile Iron Butterfly Valve

Typical materials:

• ASTM A536 ductile iron body
• Stainless steel shaft
• EPDM seat

Applications:

• Water supply
• Fire protection
• HVAC systems

Carbon Steel Butterfly Valve

Typical materials:

• ASTM A216 WCB
• Carbon steel body

Applications:

• Oil pipelines
• Industrial process systems
• Power plants

Stainless Steel Butterfly Valve

Typical materials:

• CF8
• CF8M
• 304 / 316 stainless steel

Applications:

• Chemical processing
• Food industry
• Corrosive media

Butterfly Valve Applications

DTC butterfly valves are widely used in:

• Water Treatment Plants
• Fire Protection Systems
• HVAC Systems
• Oil & Gas Industry
• Petrochemical Plants
• Chemical Processing
• Power Generation
• Marine Engineering
• Mining Industry

Common media:

• Water
• Air
• Gas
• Oil
• Steam
• Industrial fluids

Butterfly Valve vs Gate Valve

Butterfly Valve vs Ball Valve

Advantages of DTC Butterfly Valves

Reliable Manufacturing Supply

DTC provides complete valve solutions through experienced manufacturers with strict quality control.

Wide Product Range

Available options:

• Wafer butterfly valves
• Lug butterfly valves
• Flanged butterfly valves
• Soft seated butterfly valves
• Metal seated butterfly valves
• Actuated butterfly valves

Customized Solutions

DTC supports:

• Customized materials
• Special pressure ratings
• Actuator installation
• Coating requirements
• OEM/private label production

Quality Documentation

Available documents:

• EN10204 3.1 Material Certificate
• Hydrostatic Test Report
• Leakage Test Report
• Dimensional Inspection Report
• Pressure Test Certificate

Frequently Asked Questions (FAQ)

What is a butterfly valve?

A butterfly valve is a quarter-turn valve using a rotating disc to control fluid flow in a pipeline.

What is the difference between wafer and lug butterfly valves?

A wafer butterfly valve is installed between two flanges, while a lug butterfly valve has threaded holes that allow independent bolt installation and removal.

Are butterfly valves suitable for high-pressure applications?

Standard butterfly valves are mainly used for low and medium pressure applications. Triple offset butterfly valves are suitable for higher pressure and temperature services.

What industries use butterfly valves?

Butterfly valves are widely used in water treatment, HVAC, fire protection, oil & gas, chemical processing, and industrial systems.

The post Carbon Steel & Stainless Steel Butterfly Valve BV for Industrial Flow Control Systems first appeared on DTC International Trade.

DTC brass plug valves are simple yet reliable flow control valves featuring a cylindrical or tapered plug with a through-hole that rotates to open or close the flow path. With a quarter-turn operation and robust construction, our plug valves provide quick, dependable shutoff in a wide range of applications — making them ideal for gas systems, water distribution and industrial piping requiring frequent operation and reliable sealing.

Plug Valve Advantages

• Quick Quarter-Turn Operation: Fast open/close with simple 90° rotation
• Simple & Robust Design: Fewer moving parts for high reliability
• Excellent Sealing: Large sealing surface for dependable shutoff
• Low Pressure Drop: Straight-through flow when fully open
• Durable Brass Construction: Corrosion resistant and long-lasting
• Easy to Maintain: Simple design with accessible components

Performance Features

• Cylindrical/Tapered Plug: Precision machined plug for smooth operation
• Full Port Design: Unobstructed flow path when valve is open
• Lubricated Option: Some models feature lubricated plug for easier operation
• Bi-Directional Flow: Works equally well in both flow directions
• Temperature Resistant: Suitable for various fluid temperatures
• Pressure Rated: Designed for typical system pressures

Common Applications

• Natural gas and LPG distribution systems
• Water supply and distribution networks
• Industrial process piping
• Oil and petroleum products
• Chemical and petrochemical plants
• Heating and HVAC systems
• Fire protection systems
• Municipal infrastructure
• Frequent on/off operation points

Technical Specifications

• Body Material: Lead-Free Brass / Forged Brass (CW617N / HPb59-1)
• Plug Material: Brass, Chrome plated brass
• Seal Material: NBR, EPDM, PTFE, Graphite
• Valve Type: Cylindrical plug valve, Tapered plug valve
• Port Type: Full port (straight-through)
• Size Range: 1/2″ to 4″ (DN15 to DN100)
• Pressure Rating: PN10, PN16, 150 WOG
• Temperature Range: -20°C to +120°C (depending on seals)
• End Connections: NPT, BSP, G thread, Flanged, Butt Weld
• Operation: Lever handle, Handwheel, Gear operator
• Handle Colors: Red, Blue, Yellow (gas standard)
• Media: Water, Gas, Oil, Mild chemicals
• Standards: EN 12334, ISO 7, GB/T 8464, API 6D

Quality & Testing

DTC brass plug valves are manufactured under strict quality control and tested to ensure reliable performance in demanding applications. Every valve undergoes hydrostatic shell testing, seat leak testing, torque verification and dimensional inspection before shipment. Our plug valves are designed for long service life and dependable operation, meeting the highest industry standards for quality and reliability.

Contact us for detailed specifications, custom options and wholesale pricing!

The post DTC Brass Plug Valve | Quick Turn Cylindrical Plug Valve first appeared on DTC International Trade.