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CORROSION RESISTANT

Industrial Valves

PTFE Lined PFA Lined FEP Lined PP Lined PVDF Lined

Precision-engineered valves with advanced lining materials for superior corrosion resistance and reliable fluid control in demanding industrial applications.

Lining Material Options

Select the right lining material for optimal chemical compatibility and performance.

PTFE

PTFE Lined

Polytetrafluoroethylene - The standard for chemical resistance

Temperature Range -20°C to +180°C
Applications Strong Acids, Solvents, Chemicals
Chemical Resistance Excellent (except molten alkali)
PFA

PFA Lined

Perfluoroalkoxy - Superior high-purity performance

Temperature Range -20°C to +200°C
Applications Ultra-pure Chemicals, Pharmaceuticals
Chemical Resistance Superior to PTFE
FEP

FEP Lined

Fluorinated Ethylene Propylene - Excellent chemical barrier

Temperature Range -20°C to +160°C
Applications Corrosive Chemicals, Solvents
Chemical Resistance Excellent, similar to PTFE
PP

PP Lined

Polypropylene - Cost-effective chemical resistance

Temperature Range 0°C to +80°C
Applications Mild Acids, Alkalis, Water Treatment
Chemical Resistance Good for most chemicals
PVDF

PVDF Lined

Polyvinylidene Fluoride - High purity, high temperature

Temperature Range -20°C to +120°C
Applications Strong Acids, Chlorides, High Purity
Chemical Resistance Superior for aggressive chemicals

Valve Types

Available in multiple configurations

Ball Valves - Full & Reduced Port
Butterfly Valves - Wafer & Lug Type
Check Valves - Swing & Lift Type
Diaphragm Valves - Weir & Straight

Why Choose Our Valves

Engineered for reliability and performance in the most demanding applications.

Superior Corrosion Protection

Full lining coverage with no metal contact with process media, ensuring maximum service life.

Precision Flow Control

Accurate throttling and shut-off capabilities with minimal pressure drop across the valve.

Low Maintenance Design

Robust construction with replaceable components for extended service intervals.

Technical Specifications

Comprehensive specifications for all valve types and lining materials.

Standard Specifications

Parameter PTFE/PFA/FEP PP PVDF
Temperature Range -20°C to +180°C 0°C to +80°C -20°C to +120°C
Max Pressure (bar) 16 10 16
Body Material Cast Iron / Carbon Steel / SS316 Cast Iron / Ductile Iron Cast Iron / Carbon Steel / SS316
Size Range DN15 - DN600 DN25 - DN300 DN15 - DN400
Connection Types Flanged (ANSI/DIN/JIS) Flanged / Threaded Flanged (ANSI/DIN/JIS)
End Connection Standards ANSI 150, DIN PN10/16, JIS 10K ANSI 150, DIN PN10 ANSI 150, DIN PN10/16, JIS 10K

Chemical Compatibility Guide

Chemical / Fluid PTFE/PFA/FEP PP PVDF
Sulfuric Acid (Conc.) Excellent Limited Excellent
Hydrochloric Acid Excellent Good Excellent
Nitric Acid Excellent Limited Good
Sodium Hydroxide (Caustic) Excellent Good Excellent
Organic Solvents Excellent Good Good
Chlorinated Solvents Excellent Not Recommended Good
Deionized Water Excellent Good Excellent

* Torque values are approximate and may vary based on operating conditions and media.

Valve Types Available

Choose from our comprehensive range of valve configurations.

Ball Valves

Full port and reduced port designs. Ideal for on/off control with minimal pressure drop.

Size: DN15 - DN300 | Pressure: PN10/16

Butterfly Valves

Wafer and lug types. Compact design for flow regulation and isolation.

Size: DN40 - DN600 | Pressure: PN10/16

Check Valves

Swing and lift types. Prevents reverse flow in piping systems.

Size: DN15 - DN300 | Pressure: PN10/16

Diaphragm Valves

Weir and straight types. Excellent for slurry and abrasive media.

Size: DN15 - DN200 | Pressure: PN6/10

Available Valve Models

Explore our comprehensive range of industrial valves in various configurations.

PFA/FEP Ball Check Valves

PFA/FEP Ball Check Valves

PFA/FEP Lined Ball Check Valves are corrosion-resistant, non-return valves designed to prevent backflow in highly corrosive chemical applications.

View Specifications
PFA/FEP Butterfly Valves

PFA/FEP Butterfly Valves

PFA/FEP Lined Butterfly Valves offer excellent corrosion resistance for handling aggressive chemicals, ensuring tight shutoff and smooth flow control in chemical process systems.

View Specifications
PFA/FEP Diaphragm Valves

PFA/FEP Diaphragm Valves

PFA/FEP Lined Diaphragm Valves are corrosion-resistant flow control valves designed for safe and leak-proof handling of aggressive and toxic chemicals in process industries.

View Specifications
PFA/FEP Plug Valves

PFA/FEP Plug Valves

PFA/FEP Lined Plug Valves are quarter-turn, corrosion-resistant valves designed for safe shut-off of aggressive and hazardous fluids in chemical processing systems.

View Specifications
PP/PVDF Valves

PP/PVDF Valves

PP and PVDF Valves are corrosion-resistant plastic valves designed for safe and efficient flow control of aggressive chemicals, acids, and industrial fluids.

View Specifications

Industry Applications

Trusted across industries for reliable fluid control and corrosion resistance.

Chemical Processing

Water Treatment

Oil & Gas

Pharmaceutical

Food & Beverage

Power Generation

Mining & Minerals

Pulp & Paper

Frequently Asked Questions

Find answers to common questions about our industrial valves.

What is the difference between PTFE, PFA, and FEP linings?

PTFE is the standard for chemical resistance with good temperature range. PFA offers higher purity and better mechanical properties at higher temperatures. FEP provides similar chemical resistance with slightly lower temperature capability but better flow characteristics during lining application. All three are suitable for aggressive chemical service.

When should I choose PP or PVDF over fluoropolymer linings?

PP (Polypropylene) is a cost-effective option for less aggressive chemicals at moderate temperatures (up to 80°C). PVDF offers excellent chemical resistance and higher temperature capability (up to 120°C) than PP, making it suitable for stronger acids and chlorinated environments. For the most aggressive chemicals at high temperatures, PTFE/PFA/FEP are recommended.

What actuation options are available?

Our valves are available with manual handwheel, lever operation, pneumatic actuators (double acting and spring return), and electric actuators. All actuation options can be integrated with positioners, limit switches, and solenoid valves for automated control systems.

What are the pressure and temperature ratings?

Pressure ratings depend on valve size and lining material. Standard pressure rating is PN10/16 (up to 16 bar). Temperature ranges: PTFE/PFA/FEP: -20°C to +180°C, PVDF: -20°C to +120°C, PP: 0°C to +80°C. Higher temperature options available upon request.

Are these valves suitable for sanitary applications?

Yes, we offer FDA-compliant versions with PTFE/PFA linings and polished stainless steel bodies for pharmaceutical, food, and beverage applications. Sanitary connections including tri-clamp, DIN, and SMS are available.

What is the typical lead time?

Standard valves with PTFE/PP/PVDF linings are typically available within 2-3 weeks. Special materials, custom configurations, or actuated valves may require 4-6 weeks. Contact our sales team for specific delivery timelines.

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Sando Rotary Equipments
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