Vaaiga lautele o oloa

O lePneumatic Actuated Wafer Butterfly Valve is a high-performance flow control valve designed for reliable on/off and modulating service in demanding industrial piping systems. Manufactured with a 304 stainless steel disc and a rugged metal hard seal construction, this valve provides exceptional durability, tetee a'a, and bubble-tight shut-off across a wide range of media including water, ea, kesi, suauu, ausa, ma vailaau. The wafer-type body with compact design installs easily between flanges, requiring minimal space and reducing installation costs. Equipped with a high-performance pneumatic actuator, this valve delivers fast response, precise control, and reliable operation in automated systems. Available in sizes from DN50 to DN1200 (2″ to 48″) with a wide temperature range from -40°C to +600°C, this valve is suitable for a broad spectrum of applications including chemical processing, suauu & kesi, fa'atupu malosi, togafiti vai, ma faiga HVAC. It is the trusted choice for engineers and plant operators worldwide.

Pneumatic Actuated Wafer Butterfly Valve

Fa'amatalaga Fa'apitoa

Pneumatic Actuated Wafer Butterfly Valve

Vaega Autu

1. 304 Stainless Steel Disc – Superior Corrosion Resistance
2. Metal Hard Seal – High Temperature & Wear Resistant
3. Pneumatic Actuator – Fast Response & Reliable Control
4. Wafer Type Design – Compact & Space-Saving
5. Wide Temperature Range – -40°C to +600°C
6. Multiple Material Options – Customizable
7. ISO 5211 Mounting – Standard Actuator Interface

Galuega Fa'avae

The pneumatic actuated butterfly valve operates through a simple yet reliable mechanism:

• 1. Actuator Operation: Compressed air is supplied to the pneumatic actuator. For double-acting actuators, air enters one side to open the valve and the other side to close it. For spring-return actuators, the valve is opened or closed by air pressure and returns to the fail-safe position when air supply is lost.
• 2. Valve Operation: The actuator drives the stem, which rotates the disc 90° from fully closed to fully open. The disc provides bi-directional sealing against the seat.
• 3. Control Options: The valve can be controlled by a solenoid valve (on/off control) or a positioner (modulating control with 4-20mA or 0-10V signal).

Pneumatic Actuated Wafer Butterfly Valve

Talosaga

1. Fa'agaioiina Vailaau
2. Suauu & Paipa kesi
3. Malosiaga
4. Vai & Wastewater Treatment
5. HVAC & Faavevela Faaitumalo

afifiina ma uta

O le afifiina e fa'alagolago i le ituaiga oloa ma le aofa'i. Options include wooden crates or carton boxes with proper protection for actuator and valve body. E mafai ona fa'atulaga le uta i le sami, nofoaafi, ea, po'o le mana'oga a le tagata fa'atau.

Pneumatic Actuated Wafer Butterfly Valve

Fa'amatalaga a le Kamupani

Luoyang Datang Energy Tech Co., Ltd is a professional industrial valve supplier, dedicated to providing reliable flow control solutions for chemical, suauu & kesi, fa'atupu malosi, togafiti vai, HVAC, ma faiga paipa fale gaosi oloa i le lalolagi atoa. O oloa uma e gaosia i tulaga faʻavaomalo faʻatasi ma le CE ma le ISO 9001 tusipasi. Faatasi ai ma le ova 10 tausaga o le poto masani, se fale fa'aonaponei o 80,000 m², ma 200+ tagata faigaluega faapolofesa, matou te tautua tagata fa'atau i totonu 10+ atunuu e iai oloa lelei, tau faatauva, ma fa'atuatuaina le fa'aolaina.

Tulaga Totogi

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Pneumatic Actuated Wafer Butterfly Valve

FAQs

Q1: What is the difference between pneumatic and electric actuators?

A: Pneumatic actuators are driven by compressed air, offering fast response, maualuga tui, and excellent explosion-proof capabilities; they are suitable for hazardous areas and frequent operation. Electric actuators are powered by electricity, offering higher precision and eliminating the need for an air supply; they are suitable for locations lacking compressed air systems. O le filifiliga e fa'alagolago i tulaga o le sapalai o le ea i luga ole laiga ma le fa'atonuina o mana'oga sa'o.

Q2: What is the difference between metal-to-metal (hard) sealing and soft sealing?

A: Metal-to-metal sealing utilizes metal-on-metal contact, capable of withstanding temperatures up to 600°C; it is wear- and corrosion-resistant, making it suitable for high-temperature steam, hot oil, and abrasive media. Soft sealing (EPDM/PTFE/Viton) provides bubble-tight sealing but has a limited temperature range (typically ≤200°C). The choice depends on the medium’s temperature, omiga, ma le pala.

Q3: Do pneumatic actuators support explosion-proof requirements?

A: Ioe. Pneumatic actuators do not generate electrical sparks and are inherently explosion-proof. When paired with explosion-proof solenoid valves and positioners, the entire valve assembly meets explosion-proof zone requirements (Exd/Exia), making it suitable for hazardous environments such as petrochemical plants.

Q4: How is automated control achieved with pneumatic butterfly valves?

A: Pneumatic butterfly valves achieve on/off control via solenoid valves and modulating control via positioners (using 4-20mA or 0-10V signals). The system consists of an air preparation unit (filter-regulator + lubricator), a solenoid valve or positioner, and a pneumatic actuator, allowing for seamless integration into DCS, PLC, and SCADA systems.

Q5: What is the difference between wafer-style and lug-style butterfly valves?

A: Wafer-style butterfly valves are installed between two flanges using through-bolts; they are compact, māmā, ma taugofie. Lug-style butterfly valves feature threaded lugs on both sides, allowing them to be bolted individually to flanges; this supports single-sided isolation, enabling the removal of downstream piping without draining the system. The choice depends on installation space and maintenance requirements.

Pneumatic Actuated Wafer Butterfly Valve