DIN Cast Iron Globe Valve

Marine DIN Cast Iron Globe Valve

The Marine DIN Cast Iron Globe Valve is a robust, high-performance flow control solution, meticulously engineered to meet the demanding requirements of modern shipbuilding and offshore operations. Featuring a durable cast iron body combined with corrosion-resistant stainless steel trim and a high-integrity graphite sealing system, this PN16-rated valve delivers exceptional reliability and longevity in the most challenging marine environments.

Designed for precise regulation and positive isolation, this globe valve is ideal for a wide variety of critical shipboard applications, including steam, hot and cold water, oil, air, and gas systems. Its ability to provide accurate throttling and bubble-tight shutoff ensures operational efficiency and safety across the vessel’s auxiliary and main machinery systems.

Certified Strength and Global Compliance

With a comprehensive size range from DN15 to DN300, this valve series offers a solution for everything from small-bore instrument lines to large-diameter service mains. Manufactured in full compliance with DIN standards, the valve is available with IACS certification from the world’s leading classification societies, including CCS, ABS, and LR. This certification guarantees that the valve meets the stringent international quality, material, and performance standards required for global vessel registration and operation.

The combination of a robust cast iron body, stainless steel internals, and a high-temperature graphite sealing system ensures that this valve will withstand the harsh realities of the marine environment—corrosion, vibration, and pressure fluctuations—providing years of dependable, low-maintenance service.

Key Features & Benefits

✅ Heavy-Duty Cast Iron Construction: Provides superior strength, rigidity, and durability for demanding marine applications, offering a cost-effective and reliable pressure-containing shell.
✅ Corrosion-Resistant Stainless Steel Trim: The disc and stem are made of stainless steel, offering exceptional resistance to corrosion from seawater, steam, and hydrocarbons, ensuring smooth operation and long-term sealing integrity.
✅ High-Integrity Graphite Sealing System: Both the gland packing and bonnet gasket are constructed from high-quality graphite, providing a reliable, leak-proof seal that withstands high temperatures, pressure fluctuations, and thermal cycling.
✅ PN16 Pressure Rating: Suitable for a wide range of high-pressure marine systems, including main engine services, auxiliary circuits, and deck piping.
✅ IACS Certification (CCS, ABS, LR): Available with certification from major classification societies, guaranteeing quality, traceability, and acceptance for internationally trading vessels.
✅ Multi-Fluid Compatibility: Engineered for reliable performance with a variety of media, including steam, hot/cold water, oil, air, and gas.
✅ Precise Flow Regulation: The globe valve design is inherently suited for throttling and accurate flow control, allowing operators to fine-tune system performance.
✅ Bubble-Tight Shutoff: Ensures positive isolation when fully closed, preventing leakage and minimizing system losses.
✅ Wide Size Range (DN15-DN300): Offers versatile application across the vessel, accommodating various flow rates and pipe diameters.
✅ Custom Material Options: Alternative body materials, including Cast Steel, SS304, and SS316L, are available upon request to meet specific application requirements or enhanced corrosion resistance needs.

Material Composition

Component	Standard Material	Alternative Options
Body & Bonnet	Cast Iron	Cast Steel, Stainless Steel (SS304/SS316L)
Disc & Stem	Stainless Steel	SS304, SS316L (for enhanced corrosion resistance)
Gland Packing	Graphite	Various high-temperature materials
Bonnet Gasket	Graphite	Flexible graphite composites
Handwheel	Cast Iron	Ductile Iron, Steel

Technical Specifications

Parameter	Specification
Design Standards	DIN (Deutsches Institut für Normung)
Product Type	Marine Globe Valve / Stop Valve
Pressure Rating	PN16
Nominal Diameter (DN)	DN15, DN20, DN25, DN32, DN40, DN50, DN65, DN80, DN100, DN125, DN150, DN200, DN250, DN300
Certifications	CCS, ABS, LR (Other IACS certifications available on request)
Media	Steam, Hot Water, Cold Water, Oil, Air, Gas, Other Marine Fluids
Applications	Marine Vessels, Offshore Platforms, Port Facilities, Industrial Piping

Dimension Table (DIN PN16 Flanged)

CODE	DN	D (mm)	L (mm)	H (mm)	M (mm)	Weight (Kgs)
75 52 31	15	95	130	172	100	3.3
75 52 32	20	105	150	173	100	3.9
75 52 33	25	115	160	182	120	5.0
75 52 34	32	140	180	200	120	6.6
75 52 35	40	150	200	155	160	8.4
75 52 36	50	165	230	273	160	12.0
75 52 37	65	185	290	295	180	17.3
75 52 38	80	200	310	332	200	22.7
75 52 39	100	220	350	369	250	35.8
75 52 40	125	250	400	432	250	52.8
75 52 41	150	285	480	483	320	74.2
75 52 42	200	340	600	606	360	126.0
75 52 44	250	405	730	758	360	200.0
75 52 45	300	460	850	830	500	315.0

Applications

The Marine DIN Cast Iron Globe Valve is the ideal choice for precise flow control and isolation on a wide variety of shipboard and offshore systems:

Steam Systems: Isolation and control of auxiliary steam lines, heating coils, and steam traps.
Fuel & Lube Oil Systems: Regulating flow to burners, purifiers, and engines.
Cooling Water Systems: Controlling flow to main engines, auxiliary engines, and heat exchangers.
Ballast & Bilge Systems: Isolation and throttling for water management lines.
Compressed Air Systems: Precise control for service and control air circuits.
Fire Fighting Systems: Isolation and control for fire mains and deluge systems.
General Service Lines: For water, air, and other non-aggressive fluids.

Frequently Asked Questions (FAQs)

Q1: Why is a globe valve preferred over a gate valve for flow regulation?
A: The internal design of a globe valve (with its changing flow path and disc moving perpendicular to the seat) makes it inherently suitable for throttling and flow regulation. The disc can be positioned at any point between open and closed to accurately control flow rate. A gate valve is designed for fully open or fully closed service and should not be used for throttling, as it can cause vibration, noise, and damage to the gate and seats.

Q2: What are the advantages of stainless steel trim in a cast iron valve?
A: Using stainless steel for the trim (disc and stem) provides critical benefits:

Corrosion Resistance: Stainless steel offers far superior resistance to corrosion from seawater, steam condensate, and hydrocarbons compared to ferrous materials, protecting the moving parts and sealing surfaces.
Wear Resistance: The stem and disc are subject to friction during operation. Stainless steel provides a hard, smooth surface that resists galling and wear.
Seatability: The combination of a cast iron body and a stainless steel disc provides a reliable, long-lasting seal.

Q3: What does PN16 mean, and is it suitable for steam systems?
A: PN stands for “Pressure Nominale” (Nominal Pressure). PN16 indicates the valve is designed for a maximum working pressure of 16 bar (approximately 232 psi) at a reference temperature (typically 20°C for water). For steam systems, the allowable working pressure decreases as the temperature increases. For saturated steam at 200°C, a PN16 valve is typically rated for a lower pressure (e.g., around 13 bar). You must consult pressure-temperature charts to ensure the valve is suitable for your specific operating conditions.

Q4: Why is graphite used for the packing and gaskets instead of other materials?
A: Graphite is selected for its exceptional performance across a wide range of media and temperatures. Key advantages include:

High Temperature Resistance: It can withstand high-temperature steam without degrading, unlike rubber or PTFE.
Chemical Resistance: Graphite is inert to most fluids, including oils, gases, and seawater.
Fire Safety: It is fire-resistant, a critical safety feature for marine applications.
Reliable Seal: It maintains its sealing force over time, resisting creep and relaxation.

Q5: What are IACS certifications (CCS, ABS, LR), and why are they important?
A: IACS (International Association of Classification Societies) certifications, such as those from CCS (China Classification Society), ABS (American Bureau of Shipping), and LR (Lloyd’s Register) , are independent, third-party verifications that the valve’s design, materials, and manufacturing process meet the strict international standards required for marine equipment. These certifications are essential for:

Vessel Registration: Most flag states require class-approved equipment.
Insurance: Insurers require vessels to be “in class.”
Quality Assurance: They provide traceability and confidence in the product’s safety and reliability.

Q6: What do the “CODE” numbers in the dimension table represent?
A: These CODE numbers (e.g., 75 52 31) are the manufacturer’s unique part numbers for each specific valve size. They streamline the ordering process and eliminate ambiguity. By quoting the correct code, you ensure you receive the exact DN15 valve with the correct face-to-face dimension (L), flange diameter (D), height (H), and material specification for your system, ensuring a perfect fit and correct performance.

Attention please: The description was copied from different cooperating manufacturers. The description may be different with the goods, please check with us when order.

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