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Home > Industrial Equipment & Components > Valve > Butterfly Valve > API 609 Marine Valve Supplier Providing Mill Test Report

API 609 Marine Valve Supplier Providing Mill Test Report

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Product Spotlights

API 609 compliant marine butterfly valves designed for demanding offshore and shipboard applications. Features corrosion-resistant materials like duplex steel, provides bubble-tight sealing with PTFE/EPDM seats, and includes a full Mill Test Report for material traceability. Offers low maintenance, versatile actuation options, and is backed by ISO9001-certified manufacturing for reliable performance in critical marine systems.

Negotiable MOQ: 1 Unit (Price negotiable depending on order volume and customization)

Key Specifications

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Application:

Other, Marine & Offshore Systems

Product Type:

Butterfly Valve

Design Standard:

API 609

Contact Supplier Request Quote Chat Now

Shanghai Zhibang Valve Manufacture Co.,ltd

1Yr

Payment & Shipping

Payment Methods:

Port of Shipment:

China

Delivery Detail:

Delivery time depends on order quantity.

Product Details
Company Profile
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Application Other, Marine & Offshore Systems

Product Type Butterfly Valve

Design Standard API 609

Connection Type Wafer, Lug (Optional)

Body Material Carbon Steel, Stainless Steel, Duplex Steel

Disc Material Stainless Steel, Coated

Seat Material PTFE, EPDM, NBR

Size Range 2 inch to 48 inch (DN50 to DN1200)

Pressure Rating Class 150, Class 300

Certification ISO9001 Quality System

As a professional valve manufacturer established in 2016, Shanghai Zhibang Valve Manufacture Co., Ltd. specializes in providing high-performance fluid control solutions for demanding applications. Our API 609 Marine Valves are engineered to meet the rigorous standards of the marine and offshore industries, ensuring reliable operation in corrosive and high-pressure environments. With an annual export value reaching up to US$1.5 million, we have built a solid reputation across global markets, including North America, Southeast Asia, and Europe. This valve is designed to offer superior sealing performance, durability, and ease of maintenance, making it a trusted component for critical shipboard systems.

Our API 609 compliant butterfly valves are constructed for optimal performance in marine applications. Key features and advantages include:

Robust Construction: Manufactured from high-grade materials such as carbon steel, stainless steel, or duplex steel, the valve body and components resist corrosion from seawater and harsh chemicals.
Superior Sealing Technology: Utilizes advanced seat materials like PTFE or EPDM, ensuring bubble-tight shut-off and long service life even under fluctuating pressures and temperatures.
API 609 Compliance: Adherence to this standard guarantees the valve's design, materials, testing, and inspection procedures are suitable for critical service in refineries, chemical plants, and marine applications.
Low Maintenance Design: The compact, wafer or lug type design minimizes space requirements and simplifies installation. The self-lubricating bushings and easily replaceable seat ring reduce downtime and operational costs.
Versatile Actuation Options: Valves can be supplied with manual hand levers, gear operators, or automated electric/pneumatic/hydraulic actuators for remote control and integration into ship automation systems.
Comprehensive Testing: Each valve undergoes stringent hydrostatic and seat leakage tests. A detailed Mill Test Report (MTR) is provided, documenting material chemical composition and mechanical properties for full traceability.

The following table outlines typical specifications for our standard API 609 Marine Butterfly Valves. Custom configurations are available upon request.

Parameter	Specification / Option
Design & Testing Standard	API 609, API 598
Size Range (Nominal)	2" - 48" (DN50 - DN1200)
Pressure Class	Class 150, Class 300
Connection Type	Wafer, Lug (Optional)
Body Material	WCB, CF8, CF8M, Duplex
Disc Material	SS316, SS316L, Coated Carbon Steel
Seat Material	PTFE, EPDM, NBR, Viton (Optional)
Stem Material	Stainless Steel (17-4PH or equivalent)
Operation	Lever, Gear, Electric/Pneumatic Actuator
Temperature Range	-20°C to +200°C (varies with seat material)

Choosing our valves brings concrete benefits to your operations. The reliable sealing prevents costly leaks and environmental hazards. The corrosion-resistant materials extend valve life, reducing replacement frequency and total cost of ownership. The provision of a Mill Test Report with every order offers peace of mind and simplifies compliance with project documentation requirements. Furthermore, our valves' ease of installation and maintenance translates to lower labor costs and minimized system downtime.

Shanghai Zhibang operates under an ISO9001-certified quality management system, ensuring consistent product excellence from raw material sourcing to final inspection. Our global reach, evidenced by exports to over a dozen major markets from Oceania to Western Europe, demonstrates our capability to meet diverse international standards and client expectations. We support flexible shipment from key ports like Shanghai, Guangzhou, and Hong Kong to ensure timely delivery. Partner with us for valves that combine rigorous API 609 compliance with the traceability of a full Mill Test Report, delivering the reliability your marine applications demand.

Frequently Asked Questions (FAQ)

What is the significance of API 609 for a marine valve?
API 609 is a standard published by the American Petroleum Institute for butterfly valves. It specifies requirements for design, materials, pressure-temperature ratings, dimensions, testing, and inspection. For marine use, compliance ensures the valve is suitable for critical services involving hydrocarbons, seawater, and other demanding fluids, providing a benchmark for safety and performance.
Do you provide a Mill Test Report (MTR) with every valve?
Yes. A comprehensive Mill Test Report (also known as Material Test Report or Certificate) is a standard document provided with each valve order. It details the chemical composition and mechanical properties of the metallic materials used (body, disc, stem), providing full traceability and verification that materials meet specified standards.
What materials are recommended for seawater service?
For superior corrosion resistance in seawater, we recommend valves with a body and disc made from duplex stainless steel (e.g., UNS S31803/S32205) or super duplex stainless steel. For less critical or lined systems, 316/316L stainless steel is a common choice. The seat material should be compatible, with EPDM being a popular elastomer for seawater.
Can these valves be automated?
Absolutely. Our API 609 butterfly valves are designed to be compatible with a wide range of actuators. We can supply and mount electric, pneumatic, or hydraulic actuators tailored to your control system requirements, including fail-safe options (spring-return) and positioners.
What is the difference between wafer and lug type connections?
A wafer-style valve is installed between two pipeline flanges using long bolts. A lug-style valve has threaded inserts (lugs) on the valve body, allowing it to be bolted directly to each flange independently. Lug types are often preferred for end-of-line service or where the downstream side may need to be disconnected separately.
What testing is performed on the valves before shipment?
Each valve undergoes a hydrostatic shell test (per API 598) at 1.5 times its rated pressure to ensure body integrity. A seat leakage test is also performed, typically using air or water at a specified pressure. Test certificates are available upon request.
Do you offer custom painting or coating for marine environments?
Yes, we offer various external coatings and painting schemes as per client specifications. Common requests include epoxy coatings for enhanced corrosion protection, specific color codes for system identification, or coatings meeting standards like NORSOK M-501.
What is your typical lead time for orders?
Lead time depends on the order quantity, size, material, and actuation requirements. For standard configurations in common sizes, we typically maintain stock or can deliver within 4-8 weeks. We provide accurate lead time estimates with every quotation.