Valve

Huaxi Special Steel Manufacturing Co., Ltd
Valve

Valve

Valves are pipeline accessories used to open and close pipelines, control flow direction, and adjust and control the parameters (temperature, pressure, and flow) of the conveying medium. According to their functions, they can be divided into shut-off valves, check valves, regulating valves, etc.

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Size Range

Typical valves

Ball valve: DN6~DN1200

Gate valve: DN15~DN4000
Butterfly valve: DN50~DN3000
Globe valve: DN6~DN300
Check valve: DN10~DN2000

Special valves
Micro valves (such as for laboratories): DN1~DN5
Ultra-large diameter valves (such as water conservancy projects): DN3000 and above

Standard

API standards: such as API 6D (pipeline valves) and API 600 (steel gate valves) are applicable to the oil and gas industry. 

ANSI/ASME standards: such as ASME B16.34 (valve pressure-temperature ratings) are the basic specifications for general industrial valves.


Types

Ball valves are used to cut off or connect the medium in the pipeline, as well as to regulate and control the fluid. As a professional manufacturer of customized valves, we can provide you with all kinds of floating and trunnion mounted ball valves.

Design standard: API, ASME, EN, ISO, JIS, DIN, BS, GB
Pressure rating: CLASS 150LB~2500LB, 1.0MPa~42.0MPa, JIS 10K~40K
Size range: NPS 3/8"~48", DN8~DN1200
End connections: flange, wafer, threaded, butt weld, socket weld
Operation: handle lever operated ball valve, gear operated ball valve, pneumatic operated ball valve, hydraulic actuator, electric actuator



Gate valves are used to cut off or connect media transmission, and are suitable for pipeline systems in petroleum, chemical, thermal power plants and other industrial fields. Gate valves can only be fully opened and disconnected in the pipeline, which means it cannot be used for regulation and throttling.


Design standard: API, ASME, ISO, JIS, DIN, BS, GB
Body Material: Cast Steel / Forged Steel
Pressure Class:  Class 150 - 2500  1.0MPa~42.0MPa, JIS 10K~40K
Size:  1/2" up to 60"   DN15~DN1500
Connection Form:  Thread NPT, Socket weld, butt weld, Flanged
Operation Method: Manual (including the type with a manual reduction gear), electric, Pneumatic




Butterfly valves are widely used in chemical industry, petrochemical industry, marine development, smelting, etc., as regulating and closing equipment. The seat and disc of our butterfly valve employ the most advanced technology to complete the structural design.


Types
Double offset butterfly valves
Triple Offset butterfly valves
Specification Anti-static
Blow-out proof stem
V type packing
Zero leakage
Ends: Wafer, Lug.
Unidirectional/Bi-directional sealing
Operation: Lever, Gear, Electric, Pneumatic actuator
Bare shaft with ISO 5211 top mounting flange
Anti-static
Blow-out proof stem
Fire safe API 607
V type packing
Zero leakage
Ends: Wafer, Lug, Double flange.
Uni-directional/Bi-directional sealing
Operation: Lever, Gear, Electric, Pneumatic actuator
Bare shaft with ISO 5211 top mounting flange (when specified)
Applicable seat materials
PTFE
RPTFE(15% Glass Filled)
RPTFE(25% Carbon Filled)
Viton
Metal with Graphite
Metal with PTFE
Pressure
150LB, 300LB, 600LB
150LB, 300LB, 600LB
Wafer/Lug
2”up to 100”, 2”up to 60”
3”up to 80”, 3”up to 40”
Operator
2"~4" Lever; 5"~100" Gear, 2"~4" Lever; 5"~60" Gear
3"~4" Lever; 5"~80" Gear, 3"~4" Lever; 5"~40" Gear



Globe valves is a linear motion valve and is primarily designed to stop, start and regulate flow. The disk of a Globe valve can be totally removed from the flow path or it can completely close the flow path.


Size:3/4" to 6"
Material:Stainless Steel SS316/Cast Iron /Cast Steel /Forged Steel A105
Working Pressure: 150#, 200#, 800#
Connection Type: 150# Flange End, JIS 10K Flange End, Threaded End (NPT / BSPP) , Welded End Socket Weld




Check valves is a valve referred to the opening and closing parts for the circular disc and by its own weight and medium pressure to block the media flow back.

Design

API594, ASME B16.34

Testing

API 598, API6D, EN12266-1

Face to face dimension

ASME B16.10

Ends connection

ASME B16.5, ASME B1.20.1, ASME B16.25

Pressure temperature rating

ASME B16.34

Marking

MSS SP-25

Non-destructive Examination

VT, PT, RT, UT, MT


Application

Energy industry. Including oil and gas, petrochemical, thermal power generation and other fields, valves are widely used to control the flow of liquids or gases.

Chemical industry. In the chemical production process, valves can be used to adjust the flow, pressure and temperature of gases and liquids to ensure the safety and effectiveness of the chemical process.

Food and pharmaceutical industry. In the field of food and pharmaceuticals, valves are mainly used to supervise and control the flow, temperature and pressure in the production process of food and medicine.

Construction industry. In the construction industry, valves are widely used in HVAC systems and water supply and drainage systems.

Aerospace industry. In the aerospace industry, valves are used to control air, fuel and other liquids.

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