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 Butterfly Valve Factory, Service

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Custom PTFE-Lined Butterfly Valve Factory, Service

Brand: Ruitu Automation

Product origin: China

Equipment Type: Manual wafer butterfly valve with PTFE (Polytetrafluoroethylene) lining on the valve body and disc, operated by a handle and connected to pipelines via flanges.

Application: Controls the on-off of pipelines conveying highly corrosive fluids, commonly used in corrosive medium delivery systems in industries such as chemical engineering, petroleum, and pharmaceuticals.

Advantages: The PTFE lining is resistant to strong acids and alkalis, suitable for harsh corrosive working conditions; low flow resistance results in low loss during fluid transportation; manual operation is simple and labor-saving, flange connection ensures stable installation, and maintenance is convenient.

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Product Description

Core Overview

The PTFE-lined butterfly valve is a robust flow control solution engineered for handling highly corrosive and abrasive media in industrial pipelines. Featuring a cast steel or stainless steel body fully lined with virgin Polytetrafluoroethylene (PTFE), it ensures complete isolation of metal components from aggressive fluids. The valve disc, also coated or lined with PTFE, provides excellent sealing and resistance to chemical attack. Ideal for chemical processing, pharmaceuticals, water treatment, and power generation, this valve combines the mechanical strength of metal with the superior chemical inertness of fluoroplastics, offering reliable shut-off and regulation capabilities in harsh environments.

Specifications & Dimensions

Technical Parameters

Parameter	Specification
Body Material	WCB Carbon Steel, CF8/CF8M Stainless Steel
Lining/Disc Material	Virgin PTFE (Polytetrafluoroethylene)
Seat Material	PTFE, Reinforced PTFE, or EPDM (Optional)
Nominal Diameter (DN)	DN50 – DN600
Pressure Rating	PN1.0, PN1.6, PN2.5 MPa; Class 150/300
Temperature Range	-20°C to +180°C
Operation Type	Manual (Handle/Gearbox), Pneumatic, Electric
Connection Type	Wafer, Lug, Flange (ANSI, DIN, JIS, GB)
Leakage Class	ANSI/FCI 70-2 Class VI (Bubble-tight)
Flow Characteristic	On-Off or Modulating (with actuator)

Dimensional Data Table

Nominal Size (DN)	Face-to-Face Length (L) mm	Height (H) mm	Width (W) mm	Flange Diameter (D) mm	Weight (kg)
DN50	43	280	160	165	8.5
DN65	46	310	180	185	11.0
DN80	64	340	200	200	14.5
DN100	52	380	220	220	19.0
DN125	56	420	250	250	25.0
DN150	56	460	280	285	32.0
DN200	60	550	340	340	48.0
DN250	68	630	400	395	65.0
DN300	78	720	460	445	85.0
DN350	78	800	520	505	110.0
DN400	102	880	580	565	140.0
DN500	127	1050	700	670	210.0
DN600	154	1200	800	780	300.0

Core Advantages

Advantage	Description
Exceptional Corrosion Resistance	Full PTFE lining protects against strong acids, alkalis, and solvents, ensuring long-term durability in harsh chemical environments.
Zero Leakage Performance	Precision-machined PTFE seat and disc provide bubble-tight shut-off, preventing media loss and environmental contamination.
Low Operating Torque	The low friction coefficient of PTFE reduces wear on the stem and actuator, enabling smooth operation and extended service life.
Versatile Installation	Compact wafer or lug design fits between standard flanges, saving space and simplifying maintenance in complex piping networks.
High Temperature Stability	Maintains structural integrity and sealing performance across a wide temperature range (-20°C to +180°C), suitable for steam and hot fluid applications.

Frequently Asked Questions

What media are PTFE-lined butterfly valves suitable for?

They are specifically engineered for highly corrosive, toxic, and aggressive fluids, including concentrated acids (hydrochloric, sulfuric, nitric), strong alkalis, organic solvents, and ultrapure fluids where metal contamination must be avoided.

What is the maximum working temperature for this valve?

The standard operating temperature ranges from -20°C to +180°C. Continuous operation at high pressures near the top temperature limit should be evaluated based on the specific media characteristics.

Can these valves be automated with pneumatic or electric actuators?

Yes. Due to the low operating torque provided by virgin PTFE liners, these valves can be easily integrated with standard ISO 5211 top flanges for direct mounting of pneumatic or electric actuators for on-off or modulating control.

What is the sealing standard and leakage performance?

The valves achieve ANSI/FCI 70-2 Class VI bubble-tight shut-off performance, ensuring zero visible leakage in downstream pipelines under nominal pressure.

Which flange connection types are supported?

We provide Wafer, Lug, and Double Flanged designs compatible with international flange drilling standards, including ANSI Class 150/300, DIN PN10/PN16, JIS 10K, and GB standards.