Marine Gate Valves

Your Professional Marine Gate 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.

Add to Inquiry

Marine Cast Iron Gate Valves

Valve body material：Cast Iron. Type : JIS F 7363/F 7364/F 7369. Nominal pressure：5K / 10K / 16K (PN). Nominal diameter：50A-600A (DN) . Connection method：w / Flange. Manufacturer cert：ISO9001 /

Add to Inquiry

Marine Bronze Gate Valves

Valve body material：Bronze. Type : JIS F 7367/F 7368. Nominal pressure：5K / 10K (PN). Nominal diameter：15A-40A (DN) . Connection method：w / Flange. Manufacturer cert：ISO9001 / BV / ABS / CCS /

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.

Dimensions - unit:mm

Rating	SIZE	φd	L	H	RF Flange				φW
Rating	SIZE	φd	L	H	φD	φC	t	n-φh	φW
5K	50A	50	180	285	130	105	16	4-15	125
	65A	65	190	330	155	130	18	4-15	140
	80A	80	200	380	180	145	18	4-19	160
	100A	100	230	430	200	165	20	8-19	180
	125A	125	250	495	235	200	20	8-19	200
	150A	150	270	560	265	230	22	8-19	224
	200A	200	290	680	320	280	24	8-23	280
	250A	250	330	800	385	345	26	12-23	355
	300A	300	370	920	430	390	28	12-23	400
	350A	335	410	1000	480	435	30	12-25	450
	400A	380	470	1100	540	495	30	16-25	500
10K	50A	50	200	300	155	120	20	4-19	140
	65A	65	220	350	175	140	22	4-19	160
	80A	80	230	400	185	150	22	8-19	180
	100A	100	250	450	210	175	24	8-19	200
	125A	125	270	520	250	210	24	8-23	224
	150A	150	290	580	280	240	26	8-23	250
	200A	200	320	700	330	290	26	12-23	315
	250A	250	380	840	400	355	30	12-25	400
	300A	300	440	960	445	400	32	16-25	450
	350A	335	500	1050	490	445	34	16-25	500
	400A	380	590	1150	560	510	36	16-27	560
	450A	430	640	-	620	565	38	20-27	-
	500A	480	710	-	675	620	40	20-27	-
	550A	530	780	-	745	680	42	20-33	-
	600A	580	850	-	795	730	44	24-33	-
16K	300A	300	490	1010	480	430	36	16-27	560
	350A	335	540	1070	540	480	38	16-33	560
	400A	380	610	1185	605	540	42	16-33	630

Product Structure Drawing

p20250625093009f7c65.jpg (1200×700)

Hydro. test pressure - unit:kgf/cm2

Rating	5		10		16
Nominal dia	400A or less	450A to 600A	400A or less	450A to 600A	16
Hydraulic inspection for body	10.5	7.5	21	18	24
Watertight inspection for valve seat	7.7	5.5	15.4	13.2	17.6

Material List

NO.	Parts	Material
1	Body	FC200
2	Bonnet	FC200
3	Stuffing box	FC200
4	Disc	FC200
5	Handwheel	FC200
6	Valve seat of body	SCS13
7	Valve seat of disc	SCS13
8	Screwed piece	CAC406(BC6)
9	Guide bush	CAC406(BC6)
10	Guide bush	CAC406(BC6)
11	Packing gland	CAC406(BC6)
12	Indicator	CAC406(BC6)
13	Indicator plate	C2801
14	Stem	SUS403
15	Stud bolt Hex. head bolt	SS400
16	Stud bolt	SS400
17	Stud bolt	SS400
18	Taper pin with threa	SUS403
19	Hex. nut	SS400
20	Hex. nut	SS400
21	Hex. nut	SS400
22	Hex, nut	C3604
23	Hex. nut	SS400
24	Machine screw	C2700
25	Split pin	C2600
26	Packing	GRAPHITE
27	Gasket	NON ASBESTOS
28	Gasket	NON ASBESTOS
29	Name plate	C2801

Advantage of Our Boat Gate Valve

Durable Construction
We use corrosion-resistant materials like stainless steel or bronze to ensure long-lasting function even in challenging saltwater settings.

Precise Flow Control
Our marine valves provide fine fluid flow control, effectively regulating water, fuel, or other substances aboard ships and offshore platforms.

Reliable Sealing
Rongkang marine gate valves are renowned for sealing solid qualities, which stop leaks and preserve the integrity of systems and pipelines.

Easy Maintenance
We fabricate marine gate valves with parts that are easy to get your hands on and easy to maintain, which means less maintenance and less time wasted for maritime workers.

Marine Gate Valves Certificates: CCS, LR, KR, NK, BV

CCS (China Classification Society): Ensures valves meet stringent safety and quality standards for vessels operating under Chinese maritime regulations.

LR (Lloyd’s Register): Provides verification that valves conform to international safety and performance standards, widely respected in the global maritime industry.

KR (Korean Register): Certifies valves for compliance with Korean maritime safety and environmental standards, ensuring durability in harsh marine environments.

NK (Nippon Kaiji Kyokai): Japan’s classification society that certifies valves for reliability and performance under Japanese maritime regulations.

BV (Bureau Veritas): Offers comprehensive certification ensuring valves meet global standards for safety, quality, and environmental compliance.

Application

Marine stainless steel gate valves are suitable for a wide range of applications aboard ships and offshore structures, including seawater systems, ballast systems, cooling systems, bilge systems, fuel oil systems, and more.

Material

Marine gate valves are constructed from stainless steel, specifically chosen for its corrosion resistance and durability in marine environments. Common grades include 316 stainless steel, which offers superior resistance to corrosion and pitting.

Operation

Gate valves can be operated manually using handwheels or mechanically with actuators for remote operation. Manual operation is common for smaller valves, while larger valves may incorporate pneumatic, hydraulic, or electric actuators for automation.

FAQ

Q: What can we do?

A: We have professional design team to help you solve problems of your vessel, we can recommend a set of solutions for your vessel to choose.

Q: How to ensure the quality?

A: Every equipment will be tested before leaving our factory, we can show you the video and testing report, also if go for marine classification society survey, we will have the product certificate showing all the testing result and approved.

Q: What certificate do you have?

A: Our products can be issued of abs, bv, ccs, dnv, gl, lr, rina…etc, while bv and ccs are most common use and worldwide accepted certificate, every products can apppy for above certificate.

Q: How to ensure international delivery security?

A: Every cargo will be packed with appropriate package, also we have professional packing workers and forklifts to load and fix the cargo in container&air plane, ensuring the safety of sea/air transportation.

Q: How about the warranty of the products ?

A: One year warranty-when the cargo arrived at your vessel we will keep providing service like installation instructions and spare parts repairing in later using, we will always be there once you have any problems.

We're professional marine gate 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 gate valves at the best price from our factory.

Marine Bronze Gate Valves, Marine Cast Iron Gate Valves, marine gate valves