What raw materials can Ruitu bromine extraction systems process?

Our bromine extraction systems are designed for seawater, bitter brine, salt lake brine, oilfield water, bromine-bearing industrial wastewater and concentrated brine from desalination plants. The process route is selected only after we review a laboratory analysis of your feed.

Do you supply single machines or complete plants?

Both. We supply individual machines such as salt washers, roller crushers, dryers, vibrating screens, belt conveyors and hot air furnaces, and we also deliver complete turnkey lines under an EPC contract.

What is included in your EPC service?

Water quality testing, site selection support, process design, project launch preparation, equipment manufacturing and procurement, packing and shipping, installation and commissioning, operator training, finished product production guidance, and output buy-back or decommissioning support where agreed.

Can your salt washing equipment produce food-grade salt?

Our salt washing machinery is used for both food-grade and chemical-grade salt. The achievable grade depends on the crude salt composition and the standard that applies in your market, so we design the washing, crushing, drying and screening stages around your target specification.

How do you support overseas installation?

Our engineers can be dispatched to site for installation and commissioning, train your operators, and stay involved until the line produces finished product at the designed daily capacity.

How do I start a project with Ruitu?

Send us your raw material analysis, target daily capacity, product specification and site information by email or phone. Our technicians will prepare a preliminary budget estimate and an economic benefit analysis based on your budget and expected output.

Custom PTFE-Lined Pneumatic Butterfly Valve Factory, Products

1 / 1

Custom PTFE-Lined Pneumatic Butterfly Valve Factory, Products

Brand: Ruitu Automation

Product origin: China

Equipment Type‌: A butterfly valve driven by a pneumatic actuator, with PTFE lining in the valve body, and controlled by air source for opening and closing

Purpose‌: Used for controlling the on/off of fluid in pipelines. The pneumatic drive has a fast response speed, suitable for scenarios involving the transportation of strongly corrosive media where rapid opening and closing are required.

Advantages‌: The PTFE lining is resistant to strong corrosion and compatible with various corrosive media; the pneumatic drive responds quickly with fast opening and closing speed; it has low flow resistance, resulting in low fluid transportation loss.

Send Inquiry

Product Description

Core Overview

The PTFE-lined pneumatic butterfly valve is an automated flow control solution engineered for rapid and reliable operation in corrosive industrial environments. Combining a robust cast steel or stainless steel body with a seamless virgin Polytetrafluoroethylene (PTFE) lining, it ensures complete isolation of metal components from aggressive media such as strong acids, alkalis, and solvents. Integrated with a high-performance pneumatic actuator, this valve offers fast response times for on-off control or precise modulation. It is widely utilized in chemical processing, pharmaceutical manufacturing, water treatment, and power generation industries where automation, corrosion resistance, and tight shut-off are critical for process safety and efficiency.

Specifications & Dimensions

Technical Parameters

Parameter	Specification
Body Material	WCB Carbon Steel, CF8/CF8M Stainless Steel
Lining/Disc Material	Virgin PTFE (Polytetrafluoroethylene)
Actuator Type	Double-acting or Spring-return Pneumatic
Air Supply Pressure	0.4 – 0.7 MPa (Standard)
Nominal Diameter (DN)	DN50 – DN600
Pressure Rating	PN1.0, PN1.6, PN2.5 MPa; Class 150/300
Temperature Range	-20°C to +180°C
Connection Type	Wafer, Lug, Flange (ANSI, DIN, JIS, GB)
Protection Class	IP67 / IP68 (with limit switch box)
Control Signal	On-Off or 4-20mA (with positioner)

Dimensional Data Table

Nominal Size (DN)	Face-to-Face (L) mm	Height (H) mm	Width (W) mm	Flange Diameter (D) mm	Weight (kg)
DN50	43	320	160	165	9.5
DN65	46	350	180	185	12.5
DN80	64	380	200	200	16.0
DN100	52	420	220	220	21.0
DN125	56	460	250	250	28.0
DN150	56	500	280	285	36.0
DN200	60	590	340	340	52.0
DN250	68	670	400	395	70.0
DN300	78	760	460	445	90.0
DN350	78	840	520	505	115.0
DN400	102	920	580	565	145.0

Core Advantages

Rapid Automated Response

Pneumatic actuation enables fast opening/closing cycles, ideal for emergency shut-off and high-frequency operations.

Exceptional Corrosion Resistance

Full PTFE lining protects against harsh chemicals, ensuring long-term durability and preventing metal contamination.

Zero Leakage Performance

Precision-machined PTFE seat and disc provide bubble-tight shut-off, meeting strict environmental and safety standards.

Low Operating Torque

The low friction coefficient of PTFE reduces actuator load, enhancing reliability and extending service life.

Compact & Lightweight

Wafer/lug design saves installation space and simplifies maintenance in complex piping systems compared to globe valves.

Frequently Asked Questions (FAQ)

What media are compatible with PTFE-lined butterfly valves?

Virgin PTFE is chemically inert to virtually all corrosive chemicals, including strong acids (hydrochloric, sulfuric, nitric), alkalis, organic solvents, and corrosive gases across wide concentration ranges.

What is the difference between double-acting and spring-return actuators?

Double-acting actuators require air pressure for both opening and closing cycles. Spring-return (single-acting) actuators use air pressure to move in one direction and internal mechanical springs to automatically return to a failsafe position (fail-closed or fail-open) upon air supply failure.

Can this valve be used for precise modulating flow control?

Yes. By equipping the pneumatic actuator with an electro-pneumatic positioner accepting a 4-20mA or 0-10V control signal, the valve provides accurate throttling and flow modulation.

What is the working temperature limitation for the PTFE lining?

The standard operating temperature range for virgin PTFE lining is -20°C to +180°C, maintaining dimensional stability and reliable elasticity within this operating window.

Which flange connection standards can be accommodated?

The valve is manufactured to match major international flange patterns, including ANSI/ASME Class 150/300, DIN PN10/PN16, JIS 10K/16K, and GB standards in wafer, lug, and flanged configurations.