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Help CenterPN100 Marine Check Valve, Forged Steel, Flanged, Rising Disc, DNV Approved, Industrial
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Shanghai Zhibang Valve Manufacture Co., Ltd., established in 2016 and ISO9001 certified, is proud to present the PN100 Marine Check Valve — a premium forged steel, flanged, rising disc check valve designed for demanding marine and industrial applications. With an annual export value exceeding US$1 million and a global market presence spanning North America, Europe, Southeast Asia, and beyond, our factory combines advanced manufacturing techniques with rigorous quality control. This check valve offers superior reliability, minimal pressure drop, and long service life, making it the ideal choice for shipbuilding, offshore platforms, petrochemical plants, and high-pressure fluid systems where safety and performance are paramount.
Key Features & Technical Advantages:
- Forged Steel Body: High-strength A105 / A350 LF2 forged steel ensures excellent durability, corrosion resistance, and ability to withstand extreme temperatures (-29°C to 400°C).
- PN100 Pressure Rating: Designed for nominal pressure up to 100 bar (1450 psi), suitable for high-pressure hydraulic systems.
- Rising Disc Design: Visible disc position indicator provides instant operational status; disc rises fully open for minimal flow obstruction and low head loss.
- Flanged End Connections: Conform to ASME B16.5 or EN 1092-1 for easy installation and leak-proof sealing; available in raised face (RF) and ring-type joint (RTJ) configurations.
- DNV Type Approval: Certified by Det Norske Veritas for marine applications, ensuring compliance with strict international ship classification standards.
- ISO9001 Quality Management: Our factory is ISO9001 certified, guaranteeing consistent manufacturing and traceability.
- Low Maintenance: Replaceable seat and disc components reduce lifecycle costs; no external moving parts mean less wear.
Technical Specifications Table:
| Parameter | Value |
|---|---|
| Material | Forged Steel (A105 / A350 LF2 / A182 F316) |
| Pressure Rating | PN100 (100 bar / 1450 psi) |
| Size Range | 1/2" – 12" (DN15 – DN300) |
| Connection | Flanged (ASME B16.5 / EN 1092-1) |
| Disc Type | Rising Disc with visible position indicator |
| Operating Temperature | -29°C to 400°C (depending on material) |
| Certifications | DNV Type Approval, ISO9001 |
| Face-to-Face Standard | API 602 / BS 5352 / DIN 3840 |
| Optional Features | Locking device, position switch, NACE MR0175 compliance, cryogenic service |
Customer Benefits:
- Enhanced Safety: DNV approval ensures the valve meets rigorous marine safety standards, reducing the risk of backflow accidents in critical systems like ballast water, fuel oil, and cooling lines.
- Reduced Downtime: The rising disc design allows quick visual inspection of valve position, simplifying troubleshooting and maintenance.
- Energy Efficiency: Low flow resistance translates to lower pumping costs and improved system efficiency.
- Versatility: Suitable for water, oil, gas, and chemical media; optional materials for sour gas (NACE) or low-temperature service available.
- Long Life: Forged steel construction and robust internal components withstand high pressure surges and abrasive particles.
Why Choose Shanghai Zhibang Valve?
Since 2016, we have focused on producing high-quality industrial valves for global markets. Our ISO9001 certified facility operates with strict quality control from raw material inspection to final hydrostatic testing. We export over US$1 million worth of valves annually to more than 20 countries across North America, South America, Europe, Southeast Asia, Africa, and Oceania. Each PN100 Marine Check Valve is individually pressure-tested and comes with a traceable serial number. We offer flexible shipping from Shanghai, Guangzhou, Hong Kong, and Beijing ports, with lead times typically 15–30 days. Our engineering team provides technical support for custom modifications (e.g., special flange drilling, extended neck, or coating). Choose Shanghai Zhibang Valve for reliability, expertise, and competitive pricing.
Frequently Asked Questions (FAQ):
Q1: What is the difference between a rising disc and a non-rising disc check valve?
A: A rising disc check valve has a disc that lifts up from the seat as flow passes, providing a visual indication of the valve’s open/closed status. Non-rising disc designs have the disc moving inside the body without external indication. Rising disc is preferred for applications where visual confirmation is critical.
Q2: Is the PN100 check valve suitable for seawater service?
A: Yes, the forged steel body can be coated with epoxy or supplied in stainless steel version (e.g., A182 F316) for enhanced corrosion resistance in seawater. Please specify the media when ordering, and we can recommend appropriate material upgrades.
Q3: Does this valve come with a DNV certificate?
A: Yes, the PN100 Marine Check Valve is DNV type-approved. A copy of the DNV certificate is provided with each shipment. Additional classification society approvals (e.g., Lloyd’s, ABS, BV) are available upon request.
Q4: What is the maximum operating temperature?
A: Standard A105 forged steel handles up to 400°C (752°F). For low-temperature service down to -29°C, we recommend A350 LF2. For higher temperatures or corrosive media, consult our engineering team for alloy options.
Q5: Can I get the valve with a locking device?
A: Yes, we offer optional locking devices (padlock or chain lock) to prevent unauthorized operation. Please request this feature when placing your order.
Q6: What is the face-to-face dimension for a 4-inch PN100 flanged check valve?
A: The face-to-face dimension follows API 602 / BS 5352 standards. For a 4-inch class 1500 equivalent, it is typically 216 mm (8.5 inches). Custom dimensions can be manufactured if needed.
Q7: Do you provide sample testing before bulk order?
A: Yes, we offer sample valves for testing. The sample cost can be deducted from the first large order. Please contact our sales team to discuss sample availability and shipping.
Q8: How is the valve packaged for export?
A: Each valve is individually wrapped with corrosion protection, then packed in plywood cases or pallets according to international shipping standards. We ensure proper cushioning to prevent damage during transit.
Contact us today for a quote or technical consultation. With our ISO9001 quality system, DNV-approved product, and global shipping capability, you can trust Shanghai Zhibang Valve to deliver reliable marine check valves for your project.
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