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Home > Industrial Equipment & Components > Valve > Butterfly Valve > GB/T3036-94 Marine Wafer Butterfly Valve DN50-DN600 EPDM/NBR Seal Standard Compliant

GB/T3036-94 Marine Wafer Butterfly Valve DN50-DN600 EPDM/NBR Seal Standard Compliant

GB/T3036-94 Marine Wafer Butterfly Valve DN50-DN600 EPDM/NBR Seal Standard Compliant thumbnail-3

GB/T3036-94 Marine Wafer Butterfly Valve DN50-DN600 EPDM/NBR Seal Standard Compliant thumbnail-4

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GB/T3036-94 Marine Wafer Butterfly Valve DN50-DN600 EPDM/NBR Seal Standard Compliant photo-1

GB/T3036-94 Marine Wafer Butterfly Valve DN50-DN600 EPDM/NBR Seal Standard Compliant photo-2

GB/T3036-94 Marine Wafer Butterfly Valve DN50-DN600 EPDM/NBR Seal Standard Compliant photo-3

GB/T3036-94 Marine Wafer Butterfly Valve DN50-DN600 EPDM/NBR Seal Standard Compliant photo-4

GB/T3036-94 Marine Wafer Butterfly Valve DN50-DN600 EPDM/NBR Seal Standard Compliant photo-5

Product Spotlights

GB/T3036-94 compliant marine wafer butterfly valve for DN50-DN600 pipelines. Features EPDM or NBR seals for seawater/fuel resistance. Compact wafer design saves space. Offers robust construction, low torque operation, and optional actuation. Ideal for reliable on/off and regulating service in shipboard systems, backed by ISO9001 manufacturing.

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

Key Specifications

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Standard:

GB/T3036-94

Application:

Other, Marine & Shipbuilding Systems

Seal Material:

EPDM/NBR

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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
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Standard GB/T3036-94

Application Other, Marine & Shipbuilding Systems

Seal Material EPDM/NBR

Size Range DN50 to DN600

Type Wafer Type

Connection Wafer Style, Between Flanges

Body Material Cast Iron / Ductile Iron / Optional

Disc Material Stainless Steel / Optional

Operation Lever, Gear, Electric Actuator Optional

As a leading valve manufacturer with a strong commitment to quality and reliability, Shanghai Zhibang Valve Manufacture Co., Ltd. proudly presents our GB/T3036-94 compliant Marine Wafer Butterfly Valve. Established in 2016 and backed by ISO9001 certification, we have consistently supplied robust and dependable fluid control solutions to a global clientele across North America, South America, Europe, Asia, Africa, and Oceania. Our valves are engineered to meet the rigorous demands of marine applications, offering exceptional sealing performance, durability, and ease of operation in critical shipboard systems.

This valve series is designed for on/off and regulating services in seawater, ballast, cooling, firefighting, fuel oil, and other piping systems onboard vessels. The wafer-style design ensures a compact and lightweight installation between ANSI or DIN standard flanges, saving valuable space and weight – a crucial factor in marine engineering. The valve features a resilient EPDM or NBR seat, providing excellent sealing against a wide range of media and ensuring long service life even in challenging saline environments.

Key Features and Technical Advantages:

Standard Compliance: Manufactured in strict accordance with the Chinese national standard GB/T3036-94, which specifies requirements for marine butterfly valves, ensuring interchangeability and reliability for shipbuilders and repair yards.
Superior Sealing Options: Equipped with EPDM (Ethylene Propylene Diene Monomer) or NBR (Nitrile Butadiene Rubber) sealing rings. EPDM offers excellent resistance to weathering, ozone, and seawater, while NBR provides good resistance to oils and fuels. The choice depends on the specific media.
Wide Size Range: Available from DN50 (2") to DN600 (24"), covering the vast majority of pipeline requirements in marine systems, from auxiliary lines to main service lines.
Robust Construction: The valve body is typically made from high-quality cast iron or ductile iron with corrosion-resistant coating. The disc is often stainless steel (e.g., CF8/304, CF8M/316) to prevent corrosion and ensure smooth operation.
Versatile Actuation: Standard manual operation via a lever or a gearbox for larger sizes. The design is fully compatible with electric, pneumatic, or hydraulic actuators for remote and automated control, which can be supplied upon request.
Bidirectional Sealing: The resilient seat design provides effective bidirectional shut-off, preventing leakage from either direction of flow, which is essential for safety in marine applications.
Low Torque Operation: The streamlined disc design and low-friction seat ensure low operating torque, reducing wear on the stem and actuator, and making manual operation easier.
Maintenance-Friendly: The seat is often replaceable without removing the valve body from the pipeline, significantly reducing downtime and maintenance costs during ship overhaul periods.

Technical Specifications Table:

Parameter	Specification
Design Standard	GB/T3036-94
Nominal Diameter (DN)	50, 65, 80, 100, 125, 150, 200, 250, 300, 350, 400, 450, 500, 600
Pressure Rating (PN)	PN10, PN16 (Standard), Higher ratings available
Seat Material	EPDM (Standard), NBR (Optional), Other materials upon request
Body Material	Cast Iron, Ductile Iron, Coated Carbon Steel, Stainless Steel
Disc Material	Stainless Steel CF8 (304), CF8M (316), Coated Carbon Steel
Stem Material	Stainless Steel (17-4PH or equivalent)
Operating Temperature	EPDM: -20°C to +120°C / NBR: -10°C to +80°C (Media dependent)
Connection Type	Wafer, Lugged Wafer (Optional)
Face-to-Face	As per GB/T3036-94 / ISO 5752 Series 20
Operation	Lever (DN50-DN200), Gear (DN250+), Actuator Ready

Benefits for Our Clients:

Enhanced System Reliability: Reduces the risk of in-service failures, ensuring continuous operation of critical marine systems.
Cost-Effective Solution: Competitive pricing combined with long service life and low maintenance requirements offers a superior total cost of ownership.
Simplified Procurement & Installation: Standard-compliant design ensures compatibility with existing shipboard flanges and systems, speeding up installation and retrofit projects.
Global Supply Chain Support: With annual export values between US$1-1.5 million and major shipment ports in Shanghai, Guangzhou, Hong Kong, and Beijing, we guarantee timely delivery and logistical support to shipyards and marine equipment suppliers worldwide.

Choosing Shanghai Zhibang's Marine Butterfly Valve means partnering with a certified manufacturer dedicated to maritime excellence. Our ISO9001 quality management system underpins every stage of production, from material sourcing to final testing. We understand the unforgiving nature of the marine environment, and our valves are built to withstand it. Our presence in diverse global markets from Eastern Europe to Southeast Asia and North America to Africa is a testament to the trust and satisfaction of our clients. For a valve solution that combines regulatory compliance, robust performance, and value, contact us today to discuss your project requirements or request a detailed quotation.

Frequently Asked Questions (FAQ):

Q: What is the main difference between EPDM and NBR seals for this valve?
A: EPDM seals are highly resistant to weathering, ozone, steam, and seawater, making them ideal for general marine water services. NBR seals offer better resistance to oils, fuels, and aliphatic hydrocarbons, suitable for fuel oil or lubricating oil lines. The selection should be based on the specific media in your system.
Q: Can this wafer butterfly valve be used for throttling or flow control?
A: While primarily designed for on/off service, this resilient-seated butterfly valve can be used for moderate throttling applications. For precise flow control, especially with actuators, it is recommended to consult our engineering team for specific disc characteristics and Cv data.
Q: Is this valve suitable for both freshwater and seawater applications?
A: Yes, with the appropriate material selections. For seawater service, we recommend a stainless steel disc (316/CF8M) and an EPDM seat. The valve body should have a suitable corrosion-resistant coating or be made of a more resistant material like duplex stainless steel upon request.
Q: Do you provide valves with actuators for automated systems?
A: Absolutely. We can supply the valve as a complete package with electric, pneumatic, or hydraulic actuators, along with necessary controls and accessories. Please specify your requirements for voltage, torque, control signal, and fail-safe mode when inquiring.
Q: What are the flange standards compatible with this wafer valve?
A: The valve is designed to fit between flanges conforming to common standards such as ANSI B16.5 (Class 150) or DIN/EN standards (PN10/PN16). The face-to-face dimensions adhere to ISO 5752 Series 20, ensuring broad compatibility.
Q: How do I determine the correct size (DN) for my pipeline?
A: The valve's nominal diameter (DN) should match the nominal diameter of your pipeline. For example, a DN100 valve is for a 100mm (approximately 4") nominal bore pipeline. Please provide your pipe specifications, and we can assist in selection.
Q: What is the typical delivery lead time for an order?
A: Lead times vary based on order quantity, size, and material specifications. Standard sizes in common materials often have shorter lead times. With our efficient logistics from major Chinese ports, we strive to offer competitive lead times for global clients.
Q: Does the valve come with any documentation or certification?
A> Yes, each valve is supplied with a manufacturer's data report. While the product is made to GB/T3036-94, specific material certifications (3.1) or pressure test certificates can be provided upon request to meet classification society or project requirements.