(I) Sanitary Ball Valve Nominal Diameter
1. Range: DN15 - DN300 (Special specifications available upon request)
1. Common Specifications: DN15, DN20, DN25, DN32, DN40, DN50, DN65, DN80, DN100, DN125, DN150, DN200, DN250, DN300
(II) Nominal Pressure
1. PN Series: PN10, PN16, PN25, PN40, PN63, PN100
1. Class Series: Class150, Class300, Class600, Class900, Class1500
(III) Connection Type
1. Flange Connection: Complies with GB/T 9113, HG/T 20592, and ASME B16.5 Flange sealing surface types include raised face (RF), flat face (FF), grooved face (MFM), and tongue-and-groove (TG).
1. Threaded Connection: Complies with standards such as GB/T 7306 and ASME B1.20.1. Suitable for small-diameter valves. Connection thread types include tapered pipe thread (NPT) and straight pipe thread (G).
1. Wafer Connection: The valve is clamped between two flanges or a dedicated flange for wafer-type butterfly valves. Suitable for installations with limited space.
1. Welded Connection: Includes butt welding (BW) and socket welding (SW). Suitable for high-temperature, high-pressure, and extremely demanding sealing conditions. Welding standards comply with GB/T 12459 and ASME B16.9.
(IV) Valve Body Materials
1. Metal Materials
∙ Carbon Steel (WCB, WCC): Has excellent overall mechanical properties and is suitable for general industrial applications. The operating temperature range is -29°C. 425°C
∙ Stainless steel (304, 304L, 316, 316L, 321, etc.): Highly corrosion-resistant, widely used in the chemical, food, and pharmaceutical industries, with an operating temperature range of -196°C to 815°C
∙ Alloy steel (1Cr5Mo, 12Cr1MoV, etc.): High strength and heat resistance, suitable for high-temperature, high-pressure, and special media applications, with an operating temperature range of 550°C to 650°C
1. Non-metallic materials
∙ Plastics (PVC, UPVC, PP, PE, etc.): Excellent corrosion and chemical resistance, suitable for conveying corrosive media, with an operating temperature range of -20°C to 80°C
∙ Ceramics: Excellent wear, corrosion, and high-temperature resistance, suitable for conveying highly abrasive and corrosive media, with an operating temperature range of up to Above 1000°C
(V) Valve Spool Material
1. Metal material similar to the valve body: Suitable for general media and operating conditions
1. Special alloy materials: Such as Hastelloy and Monel, which have extremely strong corrosion resistance and are used to handle highly corrosive media, such as solutions containing large amounts of chloride ions
1. Surface-hardened metal materials: Surface treatment processes such as nitriding and hard chrome plating improve the hardness and wear resistance of the valve spool. Suitable for applications with abrasive media such as particles and suspended matter
(VI) Sealing Materials
1. Soft Seals
∙ Polytetrafluoroethylene (PTFE): Features excellent chemical stability, corrosion resistance, and a low friction coefficient. Its applicable temperature range is -100°C to 250°C, making it one of the most commonly used soft sealing materials.
∙ Reinforced Polytetrafluoroethylene (RPTFE): PTFE is reinforced with glass fiber, carbon fiber, and other materials to improve its mechanical strength and wear resistance. Its applicable temperature range is similar to PTFE. Similar
∙ Rubber (NBR, EPDM, FKM, etc.): Nitrile rubber (NBR) offers excellent oil resistance and is suitable for conveying oil and other media. Its operating temperature range is -40°C to 120°C. Ethylene propylene rubber (EPDM) offers excellent weather and water resistance and is suitable for media such as water and steam. Its operating temperature range is -50°C to 150°C. Fluororubber (FKM) offers excellent high-temperature and corrosion resistance and an operating temperature range of -20°C to 250°C.

1. Hard Seals
∙ Metal-to-Metal Seals: Utilizing a unique combination of metal materials and a sealing structure, these seals are suitable for harsh operating conditions such as high temperature, high pressure, and high abrasion, such as high-temperature, high-pressure steam and media containing solid particles. The sealing surfaces are precision machined and polished to ensure excellent sealing performance. Operating temperatures can reach over 650°C.
∙ Ceramic Seals: Ceramic materials offer high hardness, high wear resistance, and excellent corrosion resistance, making them suitable for sealing highly abrasive and corrosive media. Operating temperatures can reach... 1000°C and above
(VII) Actuator Parameters
1. Power Supply Type
∙ AC Power Supply (AC): Common voltage levels include 220VAC and 380VAC, with frequencies of 50Hz or 60Hz, suitable for most industrial and residential applications.
∙ DC Power Supply (DC): Common voltages include 24VDC and 110VDC, suitable for control systems requiring DC power, such as highly automated equipment or applications requiring explosion-proof operation.
1. Output Torque
∙ Range: Depending on valve specifications and operating requirements, actuator output torque ranges from 50N·m to 5000N·m.
∙ Selection Basis: Comprehensive consideration should be given to factors such as the valve's nominal diameter, nominal pressure, media characteristics, operating temperature, and valve operation mode (on-off or modulating) to ensure the actuator can provide sufficient torque to drive the valve properly.
1. Actuation Time
∙ On-off actuators: The actuation time from fully open to fully closed or from fully closed to fully open is generally between 5s and 60s. The specific time can be adjusted according to user needs.

∙ Modulating actuators: Response time is typically between 1s and 10s to meet the requirements for rapid and accurate flow control.

1. Control Signal

∙ On-off actuators: Typically receive switching signals (such as passive contact signals, level signals, etc.) to control the opening and closing of the valve.

∙ Modulating actuators: Common control signals include 4-20mA analog signals, 0-10V analog signals, and digital communication signals (such as Modbus and Profibus). These signals can be selected based on the requirements of the control system to achieve precise adjustment of the valve opening.

(VIII) Protection Level

1. Dust and Waterproof Level: The protection level of the actuator housing generally meets the IP standard. Common levels include IP54, IP55, IP65, and IP67.

∙ IP54: A lower protection level, providing protection against dust and splashing water from all directions, but cannot be immersed in water for long periods of time.

∙ IP55: Better protection than IP67. IP54: Protects against water jets at a certain pressure, suitable for general industrial environments.
∙IP65: Provides excellent dust and water resistance, protecting against water jets from all directions and short-term immersion.
∙IP67: Completely protects against dust intrusion and can withstand immersion in water at a certain depth for a certain period of time. Suitable for harsh outdoor environments or applications where water contact is possible.
1. Explosion-proof Rating (for applications requiring explosion-proof protection): The actuator's explosion-proof rating complies with relevant national standards, such as Exd II BT4 and Exd II CT6.
∙Exd II BT4: Suitable for Class IIB explosive gas environments, temperature class T4 (maximum surface temperature not exceeding 135°C).
∙Exd II CT6: Suitable for Class IIC explosive gas environments, temperature class T6 (maximum surface temperature not exceeding 85°C). This higher explosion-proof rating allows for use in more hazardous explosive environments.