MARINE & OFFSHORE EQUIPMENT

Dredging Equipment
- Dredge Rubber Hose
- Dredge Gate Valve
- Dredge Ball Joint
- Dredge PE Pipe & Dredge Floater
- Dredge Cutter Teeth
- Other Dredge Component
Marine Deck Machinery
- Marine Winch
- Marine Capstan
  - Marine Hydraulic Capstan
  - Marine Electric Capstan
- Marine Crane
- Marine Anchor Windlass
Marine Mooring Equipment
- Marine Anchor
- Marine Anchor Chain
- Marine Shackle
- Chain Chaser
- Marine Bollard
- Marine Chock
- Marine Fairlead
- Marine Chain Stopper
- Marine Mooring Reel
- Marine Towing Bracket
- Mooring Rope
- Marine Towing Hook
- Marine Shark Jaw
- Marine Fender
- Marine Buoy
- Marine Floating Pontoon Dock
Aquaculture Equipment
- Fishing Chains
- Fishing Nets
- Shrimp Peeling Machine
Marine Outfitting Equipment
- Marine Furniture
- Marine Chair
- Marine Door
- Marine Window
- Marine Ladder
- Marine Hatch
- Marine Kitchen Equipment
- Marine Elevator
- Port Boarding Ladder
- Marine Wet Unit System
Marine Propulsion System
- Marine Rudder System
- Marine Shaft System
- Marine Tunnel Thruster
- Azimuth Thruster
- Marine Propeller
- Diesel Engine Parts
Marine Painting
Marine Auxiliary Machinery
- Marine Air Compressor
  - Marine Air Cooled Air Compressor
  - Marine Water Cooled Air Compressor
- Marine Air Receiver
  - Marine Horizontal Air Receiver
  - Marine Vertical Air Receiver
- Marine Sewage Treatment Plant
- Marine Diesel Generator Set
- Marine Oil Water Separator
- Ballast Water Management System
  - UV Ballast Water Management System
  - Nitrogen Ballast Water Treatment System
- Marine Hydrophore
- Marine Calorifier
- Seawater Desalination Plant
- Marine Oil Separator
- Marine Fuel Oil Supply Unit
- Marine Heat Exchanger
  - Shell and Tube Exchanger
  - Plate Heat Exchanger
- Marine Hot Well Unit
- Marine Incinerator
- Marine Boiler
Marine Valve
- JIS Marine Valve
- DIN Marine Valve
- ANSI Marine Valve
- GB Marine Valve
- CB Marine Valve
- CBM Marine Valve
- Marine Gate Valve
- Marine Globe Valve
- Marine Angle Globe Valve
- Marine SDNR Valve
- Marine Angle SDNR Valve
- Marine Check Valve
- Marine Storm Valve
- Marine Butterfly Valve
- Marine Quick Closing Valve
- Marine Fire Valve
- Marine Self Closing Valve
Marine Valve Accessories
- Air Vent Head
- Marine Filter
- Marine Mud Box
- Marine Strum Box
- Deck Control Unit
- Marine Scupper
- Marine Sight Glass
- Marine Level Gauge
- Marine Level Switch
- Marine Flow Meter
- Others
Marine Pump
- Marine Centrifugal Pump
  - Marine Horizontal Centrifugal Pump
  - Marine Vertical Centrifugal Pump
- Marine Screw Pump
  - Marine Single Screw Pump
  - Marine Double Twin Screw Pump
  - Marine Three Screw Pump
- Marine Gear Pump
- Marine Vortex Pump
- Marine Ejector Pump
- Marine Diaphragm Pump
- Marine Piston Pump
- Marine Fire Pump
- Marine Emergency Fire Pump
- Marine External Fire Pump
- Marine Ballast Water Pump
- Marine Fuel Pump
- Marine Lubricating Oil Pump
- Marine Bilge Pump
- Marine Sewage Pump
- Marine Domestic Water Pump
- Marine General Pump
- Marine Cargo Oil Pump
- Marine Hand Pump
- Marine Pump Parts
  - Marine Pump Casing
  - Marine Pump Impeller
  - Marine Pump Shaft
  - Marine Pump Cover
Marine Life-saving Equipment
- Life Boat And Davit
- Life Raft
- Marine Davit
- Life Jacket
- Life Accessories
- Inflatable boat
- Marine Life-saving Immersion Suit
- Life Buoy
Fire-fighting Equipment
- Fire Monitor
- Fire Extinguisher Filling Machine
- Fire Extinguishing Agent
- Fire Hose
- Air Breathing Apparatus
- Fire Fighting System
Marine Cable
- Marine Power Cable
  - DIN 89158/89160 Marine Power Cable
- Marine Control Cable
- Marine Telecommunication Cable
Marine Electrical Equipment
- Lighting Fixture
- Maine Wiper
- Marine Compass
- Marine Air Horn
Marine HVAC
- Marine Blower Fan
- Marine Ventilator
  - Marine Mushroom Ventilation
  - Marine Goose-neck Ventilation
- Marine Fire Damper
- Marine Damper
- Marine Fan Heater
- Marine Air Conditioner
- Marine Silencer
- Spiral Ducts and Fittings
- Ventilation Grille
- Diffuser
- Air Vent
Labour Protection Appliance
Marine Decorative Material
- Rock Wool Panel
- Aluminum Honeycomb Panel
- Marine Fire Proof Panel
- Marine Ceiling
- Marine Wall Panel
- Marine Floor
- Ceramic Tile
- Cabin unit
- Thermal Insulation Material
- Marine Carpet
Marine Anode
Marine Pipe Fitting & Flange
- Marine Pipe Fitting
  - Tank Head
- Marine Flange
- Gasket
Marine Instrument
- Thermometer
- Pressure Gauge
- Marine Pressure Transmitter
- Level Transmitter
- Marine Level Gauge
- Marine Float Level Controller
- Flow Meter
- Marine Temperature Transmitter
Ship Building Equipment
- Shot Blasting Machine
- Plate Rolling Machine
- Plate Shearing Machine
- Press Brake Machine
- Pipe Bending Machine
- Shipbuilding Plates
- Marine Steel Sections
- Marine Steel Pipes
- Marine Steel Sheet Pile
- Marine Steel Pipe Pile
- Marine Cutting Machine
- Marine Welding Machine

INDUSTRY EQUIPMENT

STOCK LIST

Stock List
- Marine Valve in Stock

Contacts

tel. Tel:+86-23-67956606
tel. FAX:+86-23-67956622
email Email:manager@cqhisea.com

Working Time: 9:00--17:00

Working Day: Monday to Friday Website: www.cqhisea.com

Home > Cast Steel JIS Marine Valve

Safety Valve

Safety Valve

Introduction

A marine safety valve is a critical safety device installed on ships and marine vessels to protect the crew, equipment, and the environment from potential hazardous situations that may arise from overpressure in the vessel.

It is a spring-loaded valve that is designed to automatically open and relieve pressure if the pressure inside the vessel exceeds a predetermined set point. When the pressure drops below the set point, the valve automatically closes to prevent further release of the contents of the vessel.
Application

Marine safety valves are used on a wide range of equipment, including boilers, cargo tanks, fuel tanks, and compressed gas cylinders. They play a crucial role in ensuring the safety of the crew, vessel, and the environment, and are subject to rigorous testing and certification requirements to ensure their reliability and effectiveness.
Configuration Options

Name of Parts	Material	Advantages/Disadvantages
Valve Body	Bronze	Bronze is generally cast and has better strength, hardness and corrosion resistance than brass
	Cast Steel	The price is higher than cast iron and lower than bronze. It has high mechanical strength and toughness. With heat resistance, corrosion resistance, wear resistance and other special properties.
	Cast Iron	Low production cost, good manufacturability; good casting performance, low melting point; good fluidity; small shrinkage, good cutting performance, and good chip breaking performance. High wear and abrasion resistance, excellent vibration damping and low notch sensitivity
	Stainless Steel	Resistant to weak corrosive media such as air, steam, and water, and is rust-resistant
Valve Bonnet	Bronze	Seawater corrosion resistance, a little more expensive than cast steel and cast iron
	Cast Steel	The price is higher than cast iron and lower than bronze. Has high mechanical strength and toughness. It has special properties such as heat resistance, corrosion resistance and wear resistance.
	Cast Iron	Not resistant to corrosion and cost less than bronze and cast steel
	Stainless Steel	It has a series of characteristics such as excellent corrosion resistance, formability, compatibility and toughness
Valve Disc	Bronze	Bronze has excellent low temperature resistance, the price is a little more expensive than stainless steel, and the seawater resistance of bronze is better than that of stainless steel
Valve Disc	Stainless Steel	Stainless steel has a strong ability to resist tension, wear and corrosion. Stainless steel is much stronger than copper in material. Stainless steel will not produce corrosion, pitting, rust or wear and high temperature resistance.
Valve Stem	Stainless Steel	It has good rust resistance, excellent high temperature resistance and good intergranular corrosion resistance.

Specific Difference Between Us and Other Suppliers:

Comparison
Product Picture of other low quality supplier		Product Picture of our factory
Other low quality supplier	Consequence	Our Factory	Result
The quality of flange manufacturing is poor, and there are problems such as cracks, pores, and insufficient thickness	the valve is not wear-resistant, the pressure bearing is poor, the valve is prone to quality problems, and the service life is short.	Select materials in strict accordance with national standards	The valve is wear-resistant, has good pressure-bearing performance, and is not easy to be damaged.
In order to reduce costs, omit raw materials and reduce internal quality, resulting in the thin wall of the valve body that occupies the main body of the valve.	Leaving a safety hazard, the thin wall is easy to break or leak the valve at high temperature and high pressure or during operation.	Strictly in accordance with the standard processing, uniform thickness, and material	Use with confidence, meet user needs, and the product has a long service life
The manufacturer considers the cost and purchases unqualified standard bolts	Leaving hidden dangers on the valve can easily lead to accidents.	According to customer requirements, use standard bolts.	Use it with confidence, reduce safety hazards and reduce the accident rate.
Use iron, carbon steel to manufacture valves and repair scrap valves as shoddy valve products.	Such products generally have large errors in hardness and accuracy. It is easy to cause the shell to crack, and the phenomenon of running, running, dripping and leaking occurs, and in severe cases, it will cause the explosion of the oil and gas pipelines.	According to customer requirements to manufacture new valves, never shoddy.	Meet the hardness and precision requirements of standard valves, Ensure the quality of the valve and ensure the normal operation of the equipment.

Nominal Diameter

Diameter: 20~200

Main Size List

DN	Inter Flange						Outlet Flange						Frame Dimension
DN	d	D	D1	D2	n-φ	b	d1	D3	D4	D6	n1-φ1	b1	h1	L	H
20	20	100	75	58	4-15	14	25	125	90	70	4-19	14	66	88	236
25	25	125	90	70	4-19	14	32	135	100	80	4-19	16	88	95	260
32	32	135	100	80	4-19	16	40	140	105	85	4-19	16	95	100	320
40	40	140	105	85	4-19	16	50	155	120	100	4-19	16	100	120	480
50	50	155	120	100	4-19	16	65	175	140	120	4-19	18	120	160	500
65	65	175	140	120	4-19	18	80	185	150	130	8-19	18	130	140	540
80	80	185	150	130	8-19	18	100	210	175	155	8-19	18	140	160	570
100	100	210	175	155	8-19	18	125	250	210	185	8-23	20	160	180	690
125	125	250	210	185	8-23	20	150	280	240	215	8-23	22	180	200	730
150	150	280	240	215	8-23	22	200	330	290	265	12-23	22	230	255	885
200	200	330	290	265	12-23	22	250	400	355	325	12-23	24	260	300	1055

Safety Valve

Our Inventory

IACS Certificate: CCS, RINA, LR, ABS, BV.