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Home > Industrial Equipment & Components > Valve > Control Valve > DN15-DN50 Marine Air Pressure Reducing Valve, Cast Iron, PN1.0-4.0MPa, Threaded/Flanged, LR ABS Certified for Shipboard Use

DN15-DN50 Marine Air Pressure Reducing Valve, Cast Iron, PN1.0-4.0MPa, Threaded/Flanged, LR ABS Certified for Shipboard Use

DN15-DN50 Marine Air Pressure Reducing Valve, Cast Iron, PN1.0-4.0MPa, Threaded/Flanged, LR ABS Certified for Shipboard Use thumbnail-3

DN15-DN50 Marine Air Pressure Reducing Valve, Cast Iron, PN1.0-4.0MPa, Threaded/Flanged, LR ABS Certified for Shipboard Use thumbnail-4

DN15-DN50 Marine Air Pressure Reducing Valve, Cast Iron, PN1.0-4.0MPa, Threaded/Flanged, LR ABS Certified for Shipboard Use thumbnail-5

DN15-DN50 Marine Air Pressure Reducing Valve, Cast Iron, PN1.0-4.0MPa, Threaded/Flanged, LR ABS Certified for Shipboard Use photo-1

DN15-DN50 Marine Air Pressure Reducing Valve, Cast Iron, PN1.0-4.0MPa, Threaded/Flanged, LR ABS Certified for Shipboard Use photo-2

DN15-DN50 Marine Air Pressure Reducing Valve, Cast Iron, PN1.0-4.0MPa, Threaded/Flanged, LR ABS Certified for Shipboard Use photo-3

DN15-DN50 Marine Air Pressure Reducing Valve, Cast Iron, PN1.0-4.0MPa, Threaded/Flanged, LR ABS Certified for Shipboard Use photo-4

DN15-DN50 Marine Air Pressure Reducing Valve, Cast Iron, PN1.0-4.0MPa, Threaded/Flanged, LR ABS Certified for Shipboard Use photo-5

Product Spotlights

DN15-DN50 marine air pressure reducing valve with cast iron body, PN1.0-4.0MPa, threaded/flanged options. LR ABS certified for shipboard use, ISO9001 quality. Durable, precise regulation, easy maintenance. Ideal for pneumatic systems in engine rooms and decks.

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

Key Specifications

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Material:

Other, Cast Iron

Certification:

ISO9001, Other, LR ABS

Model:

ZBV-APRV Series

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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Material Other, Cast Iron

Certification ISO9001, Other, LR ABS

Model ZBV-APRV Series

Size Range DN15-DN50 (1/2“-2“)

Connection Type Threaded / Flanged

Pressure Rating PN1.0-4.0MPa (150-580 psi)

Application Shipboard Marine Systems

Temperature Range -20°C to +80°C

Shanghai Zhibang Valve Manufacture Co., Ltd. has been a trusted manufacturer of industrial valves since 2016, exporting over US$1 million annually to global markets including North America, Europe, and Southeast Asia. Our DN15-DN50 Marine Air Pressure Reducing Valve is specifically engineered for shipboard compressed air systems, offering precise pressure regulation from PN1.0 to 4.0MPa with durable cast iron construction. Whether you need threaded or flanged connections, this valve ensures reliable performance in harsh marine environments, backed by ISO9001 quality management and LR ABS type approval.

This valve is designed to reduce high inlet air pressure to a stable, adjustable outlet pressure, protecting downstream equipment such as pneumatic controls, actuators, and instrumentation. The cast iron body provides excellent corrosion resistance and mechanical strength, while the stainless steel internal components (optional) further enhance longevity. Available in sizes from DN15 to DN50, it fits both threaded (BSP/NPT) and flanged (PN16/PN25/PN40) connection standards, making it versatile for retrofitting or new installations.

Key Features & Technical Specifications

High Pressure Capacity: Handles inlet pressures up to 4.0MPa (580 psi) with a wide adjustable outlet range of 0.1-2.0MPa.
Durable Construction: Cast iron body with epoxy coating for marine-grade corrosion protection; internal parts in brass or stainless steel.
Multiple Connection Options: Threaded (BSP, NPT) or flanged (ANSI, DIN, JIS) to match existing piping systems.
Precision Regulation: Large diaphragm design ensures stable outlet pressure even with fluctuating inlet flow.
Low Maintenance: Easy-to-clean filter screen and accessible seat seal for quick servicing.
Compact & Lightweight: Space-saving design ideal for confined engine rooms or deck installations.

Parameter	Value
Size Range	DN15, DN20, DN25, DN32, DN40, DN50 (1/2" to 2")
Pressure Rating	PN1.0 / PN1.6 / PN2.5 / PN4.0 MPa (150 / 230 / 360 / 580 psi)
Max Inlet Pressure	4.0 MPa
Outlet Pressure Range	0.1 – 2.0 MPa (adjustable via spring)
Operating Temperature	-20°C to +80°C
Body Material	Cast Iron (GG25) with epoxy coating
Internal Parts	Brass or 304 Stainless Steel (optional)
Connection Type	Threaded (BSP/NPT) or Flanged (ANSI/DIN/JIS)
Certification	ISO9001, LR ABS Type Approval

Product Advantages for Shipboard Use:
This valve is specifically designed to meet the rigorous demands of marine environments. The LR ABS certification ensures full compliance with international classification society standards for fire safety, pressure integrity, and material traceability. The cast iron body is treated with a high-grade epoxy coating that withstands salt spray and humidity, preventing rust in engine rooms or deck areas. Furthermore, the balanced diaphragm design minimizes the effect of backpressure, delivering consistent outlet pressure even when multiple pneumatic devices operate simultaneously. For maintenance, the integrated stainless steel strainer (optional) protects internal components from debris, and the adjustable pressure spring allows quick field recalibration without special tools.

Customer Benefits:
By choosing our pressure reducing valve, shipowners and system integrators gain reliable operation that reduces downtime, extended service life due to corrosion-resistant materials, and easy installation with multiple connection options. The valve's compact size saves valuable space in machinery rooms, and its lightweight design simplifies handling during installation. With a global export network and ports in Shanghai, Guangzhou, Hong Kong, and Beijing, we deliver quickly to any major shipyard worldwide.

Trust & Quality Assurance:
Shanghai Zhibang Valve Manufacture Co., Ltd. has been manufacturing valves since 2016 and maintains an ISO9001 certified quality system. We have exported over US$1.5 million worth of valves annually to more than 20 countries, including North America, Europe, and Southeast Asia. Each pressure reducing valve undergoes 100% hydrostatic testing and functional pressure regulation tests before shipment. Our LR ABS certified products are regularly inspected by classification society surveyors, ensuring you receive a valve that meets the strictest marine standards. Contact us today for a quote or technical consultation – we are ready to support your next shipboard project.

Frequently Asked Questions

What is the maximum inlet pressure for this valve?
The valve is rated for inlet pressures up to 4.0 MPa (580 psi). The outlet pressure can be adjusted from 0.1 to 2.0 MPa using the spring adjustment screw.
Are both threaded and flanged connections available for the same size?
Yes, we offer both connection types for each size DN15-DN50. Threaded connections are typically BSP or NPT, while flanged connections follow PN16/PN25/PN40 standards. Please specify your requirement when ordering.
Does this valve come with LR ABS certification?
Yes, the valve is LR ABS type approved for marine use. We can provide the certificate upon request. The valve also meets ISO9001 quality management requirements.
Can the valve be used for other gases besides air?
The valve is designed for compressed air and inert gases. For other media, please consult our technical team to verify material compatibility.
What maintenance is required?
Periodic inspection of the internal strainer (if installed) and diaphragm is recommended. The valve can be disassembled easily for cleaning. Spare parts are available upon request.
Is the valve suitable for high temperature environments?
The standard operating temperature range is -20°C to +80°C. For higher temperature applications, we can offer optional high-temperature seals – please contact us for details.
What is the typical lead time?
Standard sizes are usually in stock and can be shipped within 7-15 days. Custom orders (e.g., special flange standards or materials) require 15-30 days depending on quantity.
Do you provide installation instructions or technical support?
Yes, we provide a user manual with each valve and offer free technical support by email or phone. We also can arrange on-site training for large projects.