Marine Valves

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Your Professional Marine Valves Supplier

Qingdao Keysmile Valves Co. Ltd. is a diversified manufacturing company located in the Environmental Protection Industrial Park of Jimo District, Qingdao, China. Our core expertise and primary focus lie in precision sheet metal fabrication and marine valves.
We specialize in the production of high-quality hardware components and parts for a wide range of industries. Our capabilities include crafting components from various materials, including steel, iron, steel, and aluminum, through processes like cutting, bending, punching, and assembling. We are particularly well-known overseas for manufacturing various brackets, charging piles, furniture hardware, public facilities industry, various cabinets, trailer compartments, etc.

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Marine Stainless Globe Valves

Valve body material：StainlessType : JIS F 7301R/F 7303R/F 7305R/F 7319RNominal pressure：5K / 10K /

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Marine Bronze Globe Check Valves

Valve body material：Bronze Type : JIS F 7351/F 7409Nominal pressure：5K / 16K (PN)Nominal

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Marine Cast Steel Globe Check Valves

Valve body material：Cast SteelType : JIS F 7311R/F 7471/F 7377RNominal pressure：5K / 10K / 16K

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Marine Cast Iron Globe Check Valves

Valve body material：Cast IronType : JIS F 7353/F 7375/F 7377Nominal pressure：5K / 10K / 16K

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Marine Cast Iron Globe Valves

Valve body material：Cast Iron. Type : JIS F 7305/F 7307/F 7309. Nominal pressure：5K / 10K / 16K

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Marine Cast Steel Globe Valves

Valve body material：Cast Steel. Type : JIS F 7311/F 7319/F 7309R. Nominal pressure：5K / 10K /

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Marine Bronze Globe Valves

Valve body material：Bronze . Type : JIS F 7301/ F 7303. Nominal pressure：5K / 16K (PN). Nominal

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Marine Cast Steel Angle Check Valves

Valve body material：Cast Steel. Type : JIS F 7312R/F 7472/F 7378R. Nominal pressure：5K / 10K / 16K

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Marine Stainless Angle Check Valves

Valve body material：Stainless. Type : JIS F 7352R/7410R/7354R/F 7472R. Nominal pressure：5K / 10K /

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Marine Cast Iron Gate Valves

Valve body material：Cast Iron. Type : JIS F 7363/F 7364/F 7369. Nominal pressure：5K / 10K / 16K

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Marine Bronze Gate Valves

Valve body material：Bronze. Type : JIS F 7367/F 7368. Nominal pressure：5K / 10K (PN). Nominal

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Marine Cast Iron Hose Globe Valves

Valve body material：Cast Iron. Type : JIS F 7333. Nominal pressure：5K / 10K (PN). Nominal

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Why choose us

01/

Comprehensive Quality System Assurance
The company is ISO 9001 certified and strictly implements process control and data traceability. From raw material inspection and production monitoring to final product testing, detailed records are kept to ensure consistent quality and a high pass rate for every batch.

02/

High-Precision Machining and Reliable Performance
Equipped with advanced CNC machining equipment and testing instruments, and supported by an experienced technical team, we can achieve micron-level precision control. Our metal components meet the stringent requirements of European and American customers in terms of strength, wear resistance, and dimensional accuracy.

03/

Efficient and Stable Delivery Capability
With a lean production system and intelligent scheduling management, we ensure visualization and efficient coordination throughout the production process. Even for large-volume orders, we guarantee on-time delivery and stable quality, meeting the continuous supply demands of long-term partners.

04/

Flexible Customization and Technical Support
We not only process parts according to customer drawings (DWG, STEP, PDF, etc.), but also provide structural optimization and process improvement suggestions to help customers reduce costs and improve assembly efficiency — truly delivering a one-stop service from prototyping to mass production.

Marine Stainless Globe Valves

Marine Globe Valve is a type of valve commonly used in marine applications, it's designed to control the flow of fluid (usually water, oil, or gas) by opening, closing, or partially obstructing passages within the valve body.

Applicable media

High temperature thermal oil, steam, hot and cold water, chlorine gas and other related liquids and gases.

Nominal diameter

DN6~DN500.

Valve body material

Cast Steel, Stainless Steel, Bronze, Cast Iron, Ductile Iron.

Applicable media

Water, Oil, Gas, Liquid.

Connection method

Flange, Internal Thread, External Thread.

Manufacturing standards

Chinese GB/T, CB, CB/T, Japanese JIS, German DIN, American API, ANSI.

Product Structure Drawing

20250805172925c1d30.jpg (1200×423)

202508051729417dccb.jpg (1200×423)

Product Dimensions - unit:mm

Rating	SIZE	φd	L	H	FF Flange				φW
Rating	SIZE	φd	L	H	φD	φC	t	n-φh	φW
5K F7301R F7351R	15A	15	100	130	80	60	9	4-12	80
	20A	20	110	140	85	65	10	4-12	100
	25A	25	120	160	95	75	10	4-12	125
	32A	32	140	170	115	90	12	4-15	125
	40A	40	160	190	120	95	12	4-15	140
16K F7303R F7409R	15A	15	110	130	95	70	12	4-15	80
	20A	20	120	140	100	75	14	4-15	100
	25A	25	130	160	125	90	14	4-19	125
	32A	32	160	170	135	100	16	4-19	125
	40A	40	180	190	140	105	16	4-19	140

Rating	SIZE	φd	L	L1	H	H'	FF Flange				φW
Rating	SIZE	φd	L	L1	H	H'	φD	φC	t	n-φh	φW
5K JIS F 7305R JIS F 7353R JIS F 7306R JIS F 7354R	50A	50	210	100	270	240	130	105	16	4-15	160
	65A	65	250	115	300	255	155	130	18	4-15	180
	80A	80	280	130	310	265	180	145	18	4-19	180
	100A	100	340	150	360	310	200	165	20	8-19	224
	125A	125	410	170	390	330	235	200	20	8-19	250
	150A	150	480	190	415	380	265	230	22	8-19	280
	200A	200	570	220	530	450	320	280	24	8-23	315
	250A	250	740	275	650	540	385	345	26	12-23	355
	300A	300	840	310	740	610	430	390	28	12-23	400
10K JIS F 7319R JIS F 7471R JIS F 7320R JIS F 7472R	50A	50	220	120	285	255	155	120	20	4-19	160
	65A	65	270	130	310	270	175	140	22	4-19	200
	80A	80	300	140	320	275	185	150	22	8-19	200
	100A	100	350	160	370	315	210	175	24	8-19	250
	125A	125	420	180	420	360	250	210	24	8-23	280
	150A	150	490	205	470	405	280	240	26	8-23	315
	200A	200	570	230	555	475	330	290	26	12-23	355
	250A	250	740	290	630	570	400	355	30	12-25	450
	300A	300	840	320	770	645	445	400	32	16-25	500
16K JIS F 7309R JIS F 7377R JIS F 7310R JIS F 7378R	50A	50	220	120	285	255	155	120	22	8-19	160
	65A	65	270	130	310	270	175	140	22	8-19	200
	80A	80	300	150	340	295	200	160	24	8-23	224
	100A	100	350	170	385	330	225	185	26	8-23	250
	125A	125	430	200	455	390	270	225	26	8-25	315
	150A	150	500	225	510	435	305	260	28	12-25	355
	200A	200	570	250	630	540	350	305	30	12-25	450

Features of Marine Stainless Globe Valves

》This production has a reasonable structure, reliable sealing, excellent performance, and a beautiful appearance.
》The valve clack and sealing surface of the valve seat are made by resurfacing welding of iron-based alloy or Satellite cobalt-based alloy, which is wear-resistant, high temperature resistant, and corrosion resistant, it also has a long service life.
》The valve stem is treated by quenching and tempering, as well as surface permeability ammonia, so it has good corrosion resistance and abrasion resistance.
》It can take various standards of piping flange and flange sealing surface modes, in order to satisfy various engineers’ requirements and users’ demands.
》The valve body materials have complete varieties, which can be fitted reasonably according to actual operation mode and user’s requirement, it is also suitable for various pressures, temperatures, and medium operation modes.
》It has reliable sealing, and replacing fling can be operated without stopping the machine, so it is convenient and quick, which won’t affect system running.

Quick Comparison Table

Function	Mechanism / Valve Type	Role Aboard Ships
Flow control	Globe valves, flow-control devices	Manage pressure and flow in engine, cooling, fuel lines
Full system isolation	Gate valves, ball valves (and double block systems)	Safe maintenance, emergency shutdown
Backflow prevention	Check valves (spring-loaded or stop-check)	Protect pumps, prevent contamination, ensure flow direction

High‑Grade Materials Commonly Used in Marine Valves

Marine valves must endure relentless exposure to saltwater, humidity, and harsh marine conditions. To meet these demands, valve bodies and internal components are typically constructed from:

Marine-grade stainless steels (such as 316, 316L, and super duplex)

Renowned for their chromium and molybdenum content, these grades resist pitting and crevice corrosion in chloride-rich environments.

Bronze and aluminum bronze (e.g., C95400 aluminum bronze)

Copper-based alloys prized for exceptional saltwater corrosion resistance, wear durability, and long service life—even under high-pressure and temperature conditions.

High-performance alloys like Hastelloy (C‑276, etc.)

Engineered for unmatched corrosion resistance in aggressive marine and chemical environments. They also tolerate extreme temperatures and require less maintenance.

Premium options for specialized needs

Materials such as Monel, titanium, and super duplex steel are sometimes specified—especially for military-grade or Mil-Spec applications—offering robust resistance to rapidly flowing seawater and strong corrosive stress.

Standards and Certifications for Marine Valves

Marine valves are subject to stringent international standards and certifications to guarantee their quality, safety, and environmental performance in demanding maritime conditions. Key standards include:

ISO 10434: Outlines performance, design, and testing requirements specific to marine valves.

ASTM: Provides comprehensive guidelines for material properties and manufacturing processes to ensure durability.

ANSI: Establishes benchmarks for quality, compatibility, and safety in valve design and operation.

MARPOL: Ensures that marine valves meet environmental regulations to prevent pollution in maritime operations.

SOLAS: Sets critical safety standards to protect vessels, crew, and cargo by ensuring reliable valve performance.

FAQ

Q: If there is any quality problem, how do you solve it?

A: We are very proud that we never make one customer leave us. We are not 100% perfect, there is some quality problem.
Normally replacement, or compensation, or resend goods to customers as per the condition. To be discussed as per condition.

Q: How long is your delivery time?

A: For normal products in 7-10 days; For bulk order, in 15-25 days. It depends.

Q: Warranty time?

A: 3 years warranty for all of our stainless steel products. Gaskets or the easy broken parts are not included due to the different application for customers.

Q: Why trust in us?

A: 14 years in this industry. It makes us professional. Good credit in this market. All of our machines are the assurance of our responsibility.

Q: Free sample?

A: Free samples can be provided for first cooperation under sincere cooperation.

We're professional marine valves manufacturers and suppliers in China, specialized in providing high quality customized service and OEM service. We warmly welcome you to buy high precision marine valves at the best price from our factory.