China PTFE-Lined Globe Valve Product, Service

Brand: Ruitu Automation

Product origin: China

Equipment Type‌: A globe valve with PTFE lining on the valve body and valve core, equipped with a handwheel operating mechanism and flange connections.

Purpose‌: Used for controlling the on/off of fluid in pipelines. It achieves valve opening and closing through the lifting and lowering of the valve core, and is suitable for scenarios involving the transportation of strongly corrosive media where strict sealing is required.

Advantages‌: The PTFE lining is resistant to strong corrosion, extending the service life of the equipment; it has excellent sealing performance, enabling reliable control of fluid on/off; the handwheel operating method is simple and intuitive with a small operating torque.

Product Description

Core Overview

The PTFE-lined globe valve is a precision flow control device engineered for severe service applications involving highly corrosive and abrasive media. Featuring a robust cast steel or stainless steel body with a seamless virgin PTFE lining, it provides complete metal isolation from aggressive fluids like strong acids, alkalis, and solvents. Its linear motion stem design allows for precise throttling and reliable shut-off, making it ideal for chemical processing, pharmaceutical manufacturing, power generation, and wastewater treatment industries where process control and leak prevention are critical.

Specifications & Dimensions

Technical Parameters
Parameter Specification
Body Material WCB Carbon Steel, CF8/CF8M Stainless Steel
Lining Material Virgin PTFE (Polytetrafluoroethylene)
Disc/Seat Material PTFE, Reinforced PTFE, PFA
Nominal Diameter (DN) DN15 – DN200
Pressure Rating PN1.6, PN2.5, PN4.0 MPa; Class 150/300
Temperature Range -20°C to +180°C (PTFE), up to +200°C (PFA)
Operation Type Manual (Handwheel), Pneumatic, Electric
Connection Type Flange (ANSI, DIN, JIS, GB), Threaded
Leakage Class ANSI/FCI 70-2 Class IV, V, or VI
Flow Direction Typically flow under the seat (Standard)
Dimensional Data Table (Flanged End)
Nominal Size (DN) Face-to-Face Length (L) mm Height (H) mm Width (W) mm Flange Diameter (D) mm Weight (kg)
DN15 130 200 120 95 4.5
DN20 150 220 130 105 6.0
DN25 160 240 140 115 8.0
DN32 180 260 160 140 11.0
DN40 200 280 180 150 14.0
DN50 230 300 200 165 18.0
DN65 290 350 240 185 25.0
DN80 310 380 280 200 32.0
DN100 350 420 320 220 45.0
DN150 480 550 400 285 75.0
DN200 600 680 480 340 115.0

Core Advantages

Superior Corrosion Resistance

Full PTFE lining withstands aggressive chemicals, ensuring long-term durability and preventing contamination.

Precise Flow Control

Linear stem motion provides excellent throttling capability and fine flow regulation for process optimization.

Bubble-Tight Shut-Off

Precision-machined PTFE seat and disc ensure zero leakage, enhancing process safety and environmental protection.

Low Maintenance

Non-stick PTFE surfaces prevent scaling and buildup, reducing maintenance frequency and operational downtime.

Versatile Actuation

Compatible with manual, pneumatic, and electric actuators, allowing easy integration into automated control systems.

Frequently Asked Questions

What media can a PTFE-lined globe valve handle?
It is specifically engineered to handle highly corrosive and aggressive media, including strong acids (such as sulfuric, hydrochloric, and nitric acids), strong alkalis, toxic chemicals, and harsh industrial solvents.
What is the operating temperature and pressure limit?
The valve operates reliably within a temperature range of -20°C to +180°C with virgin PTFE (and up to +200°C when configured with PFA). Pressure ratings span PN1.6, PN2.5, PN4.0 MPa, as well as ASME Class 150/300.
Why choose a globe valve design for throttling rather than a ball valve?
The linear stem motion of a globe valve allows precise and proportional throttling control, making it much more suitable for fine flow regulation and sensitive process control where exact flow rates must be maintained.
What actuation options are compatible with these valves?
The valve can be configured for manual operation with a handwheel, or automated with pneumatic and electric actuators to allow seamless integration into centralized DCS or automated control loops.
What connection standards are supported?
Standard connections include flanged ends conforming to ANSI, DIN, JIS, and GB standards, as well as threaded connection options depending on pipe sizing and installation requirements.

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