DN350 LUG Butterfly Valve

The DN350 LUG Butterfly Valve is a PN25 triple-offset lug-type butterfly valve featuring a WCB body, a CF8M disc, and an SS316+graphite seal; it is suitable for the on/off and flow regulation control of water, oil, and gas pipelines.

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Product Introduction

DN350 LUG Butterfly Valve Overview

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Technical Specifications

Size	DN350
Pressure Rating	PN25
Connection Type	Lug type ends
Operation	Gearbox operated
Body Material	ASTM A216 WCB
Disc Material	ASTM A351 CF8M
Seal Material	SS316 + Graphite laminate
Stem Material	AISI 316 Stainless Steel
Face-to-Face Length	92 mm
Valve Structure	Triple offset design
Painting	Epoxy coating
Color Code	RAL 5005 (Bright Blue)
Design Standard	EN 593
End Flange Dimension	EN 1092-1
Suitable Medium	Water, oil, gas
Origin	China P.R.

DN350 LUG Butterfly Valve Material Specification

ASTM A216 WCB Body
Constructed from high-strength cast steel, offering robust pressure-bearing capabilities and suitable for medium-to-high pressure industrial piping systems.

ASTM A351 CF8M Disc
Manufactured from stainless steel, providing excellent resistance to corrosion and oxidation, making it suitable for oil, water, and gas media.

SS316 + Graphite Sealing
Features a metal-composite sealing structure that is resistant to high temperatures and wear, ensuring stable and reliable sealing performance.

AISI 316 Stem
A high-strength stainless steel stem offering superior corrosion resistance and stable operational transmission.

Epoxy Coating
The surface features an anti-corrosive epoxy spray coating, enhancing weather resistance and rust prevention capabilities.

DN350 LUG Butterfly Valve Applications

Water Treatment Systems

Used for flow control and shut-off in water supply, drainage, and transmission pipelines.

Oil & Gas Industry

Used for open/close control in oil and gas transmission pipelines.

Chemical Systems

Suitable for systems conveying generally corrosive media.

Power Plant Systems

Used for control in circulating water and industrial auxiliary pipelines.

HVAC Systems

Used for media regulation in heating, ventilation, and air conditioning systems.

Marine & Offshore

Suitable for systems conveying seawater and industrial fluids.

Factory Production Capability for DN350 LUG Butterfly Valve

Production Equipment
Equipped with CNC machining centers, automated spray coating lines, and pressure testing equipment.

Casting Process
Utilizes precision casting and resin sand casting techniques to enhance casting accuracy.

Machining Capabilities
Capable of precision finishing for the sealing surfaces of triple-eccentric butterfly valves.

Surface Treatment
Employs a sandblasting followed by epoxy coating process to enhance corrosion resistance.

Supply Capacity
Capable of fulfilling bulk orders with consistent and reliable delivery lead times.

OEM/ODM
Supports customization of materials, sealing configurations, actuation methods, and colors.

Quality Inspection
Conducts dimensional inspections, pressure testing, and sealing performance testing.

FAQ

Q: What media is this DN350 Lug Butterfly Valve suitable for?

A: It is suitable for water, oil, natural gas, and general industrial gases, and can be utilized in medium-to-high pressure industrial piping systems.

Q: What type of sealing structure does this butterfly valve employ?

A: It utilizes an SS316 + Graphite metal-composite sealing structure, characterized by high-temperature resistance, low leakage rates, and a long service life.

Q: What are the advantages of the triple-eccentric structure?

A: The triple-eccentric design minimizes friction on the sealing surfaces, reduces wear, and enhances both sealing performance and operational lifespan.

Q: Is the valve capable of bi-directional sealing?

A: Yes, the triple-eccentric metal sealing structure supports bi-directional sealing.

Q: Which international standards does this product comply with?

A: The product is designed in accordance with the EN 593 standard, and its flange dimensions comply with the EN 1092-1 standard.

Q: Do you offer customization services?

A: We support OEM/ODM services; the valve body material, sealing materials, actuation method, color, and nameplate can all be customized.

Q: What tests are performed prior to shipment?

A: All valves undergo shell pressure testing, sealing performance testing, and dimensional inspection.

Q: What anti-corrosion treatment is applied to the valve's surface?

A: The valve body features an epoxy coating process, providing excellent anti-corrosion and rust-prevention properties.

Q: What is the standard lead time for delivery?

A: The lead time for standard specifications is consistent and reliable; for bulk orders, production schedules can be arranged to meet specific project requirements.

Q: Which industries are the primary export markets for this product?

A: It is widely utilized in the petroleum, chemical, water treatment, power generation, HVAC, and marine industries.

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