Product Introduction

The Double Offset Butterfly Valve is a metal- or resilient-seated butterfly valve that utilizes a double-eccentric structure to minimize friction during opening and closing, thereby achieving low-torque operation and extended service life. Suitable for medium-to-high pressure water, gas, oil, and general industrial media, it is widely utilized in municipal, petrochemical, power generation, and pipeline systems.

Technical Parameters

Parameter	Specification / Options
Model	PCB100 or OEM
Size Range	2" ~ 80"
Pressure Range	PN6 / PN10 / PN16 / PN25, 125LB / 150LB
End Connection	Double Flange / Lug / Wafer
Bore	Full bore
Operation	Manual operation, Actuated operation
Body Material	Cast Iron, Ductile Iron, Carbon steel, Stainless steel, etc.
Disc Material	Cast Iron, Ductile Iron, Carbon steel, Stainless steel, etc.
Seat Material	EPDM, NBR, PTFE, VITON, SILICON
Basic Design Standard	API 609, EN 593
Face-to-Face Standard	ASME B16.10, EN 558
Flange End Standard	ASME B16.5 (≤24"), ASME B16.47 Series A/B (≥26"), EN1092
Test and Inspection	ASME B16.47 Series A or B
Fire-Safe Test	API 607
Corrosion Standard	Manufacturing to NACE latest version on request
Notes	Additional sizes and pressure classes available upon request

Customization Capabilities

Size	2"–80" (Non-standard sizes supported)
Pressure	PN6–PN25 / Class 150–300
Material	Cast Iron, Ductile Iron, Carbon Steel, Stainless Steel
Sealing	EPDM / NBR / PTFE / Metal
Connection	Wafer / Flanged / Lug
Actuation	Manual / Worm Gear / Electric / Pneumatic
Standards	API / EN / ISO / ANSI (Optional)

Factory Capabilities

Integrated Valve Manufacturing Facility (Casting + Machining + Assembly)

Precision CNC Machining Ensures Dimensional Consistency

100% Pressure and Seal Testing Prior to Shipment

Compliant with ISO, API, and EN International Standards

Products Exported to Global Industrial Markets

Supports OEM and Stable, High-Volume Supply

FAQ

Q: What is the difference between a double-eccentric butterfly valve and a standard butterfly valve?

A: The double-eccentric structure reduces friction on the valve seat, resulting in a longer service life and more stable sealing performance; it is particularly well-suited for medium-to-high pressure applications.

Q: Is it suitable for high-temperature or high-pressure environments?

A: It can be used in medium-to-high pressure conditions; suitability depends specifically on the selected materials and sealing configuration. For high-temperature applications, appropriate sealing materials must be selected.

Q: What is the Minimum Order Quantity (MOQ)?

A: We accept wholesale orders as well as small-batch trial orders. For long-term partners, we offer flexible arrangements regarding order quantities.

Q: What is the typical lead time for delivery?

A: For standard specifications, the lead time is approximately 15 to 40 days; the exact timeframe is confirmed based on the specific order quantity and customization requirements.

Q: Do you offer OEM services?

A: Yes, we do. We support customization of logos, packaging, nameplates, and technical specifications.

Q: Do your export standards meet the requirements for engineering projects?

A: Yes, they do. Our products comply with standards such as API, EN, and ISO, making them suitable for international engineering procurement projects.

Q: How do you ensure consistent product quality?

A: Every unit undergoes rigorous pressure testing and sealing testing before leaving the factory; we maintain comprehensive quality control throughout the entire production process.

Q: Can you provide samples?

A: Yes, we can provide samples for testing purposes. For bulk orders, the policy regarding sample fees can be negotiated.

Q: Is the pricing fixed?

A: Prices vary based on size, material, and quantity. We offer more favorable pricing for large-volume orders.

Q: How can I get a quick price quote?

A: Please provide the required size, pressure rating, material, quantity, and operating conditions; we can provide a quotation within 24 hours.

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