MAC 55B-11-PI-421BAAD pneumatic solenoid valve

MAC 55B-11-PI-421BAAD pneumatic solenoid valve

4 week ago

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Ningbo Hengnuo Hydraulic Drive Co.,Ltd

 4 year year

Product details

一、Product Overview

The MAC 55B-11-PI-421BAAD pneumatic solenoid valve is a high-speed balanced poppet type industrial air control valve manufactured by MAC Valves USA. It acts as a crucial pneumatic control component to drive logic switching, cylinder actuation and pilot control for the whole hydraulic system, widely matched with hydraulic pumps and hydraulic piston pumps to complete automated sequence control of heavy-duty equipment. As a premium pneumatic solenoid valve famous for ultra-fast response and anti-backpressure performance, it optimizes the control logic layout of integrated pneumatic and hydraulic system.

二、Full Model Code Breakdown

1. 55B: Main series — Large 3/2-way balanced poppet valve series, hard anodized aluminum valve body, compatible with vacuum to high-pressure air supply

2. 11: Valve function — 3/2 normally closed (NC), air spring reset, 1/4" NPT threaded main ports

3. PI: Pilot structure — Internal integrated pilot valve, built-in micro filter, no external pilot air source required, freely switchable between internal/external pilot mode

4. 421: Coil specification

- 4: Universal AC coil 120V/60Hz / 110V/50Hz

- 2: Heat-resistant continuous energization insulation design

- 1: Standard power coil (pull-in 10.9VA, holding 7.7VA)

5. BAAD: Wiring & accessory configuration

- BA: Lead wire outlet with cable gland

- A: Without manual lock button (momentary manual override for commissioning only)

- D: Standard dustproof protection grade with visual valve position marking

三、Core Technical Parameters

- Valve Type: 3/2-way normally closed balanced poppet pneumatic solenoid valve

- Working Medium: Compressed air, dry inert gas (clean gas for hydraulic system auxiliary air control)

- Working Pressure: Vacuum ~ 150PSI (0~10bar); Internal pilot supply pressure: 30~150PSI

- Port Size: 1/4" NPT

- Flow Capacity: Cv=1.2, large flow air delivery

- Response Speed: Energized 8~12ms, de-energized 7~11ms, max 500 cycles/min high-frequency operation

- Ambient Temperature: -18℃ ~ +50℃

- Air Filtration Requirement: ≥40μm, no lubrication needed

- Leakage Rate: ≤50cm³/min

- Material: Aluminum alloy valve body, vulcanized integrated wiper seal spool

- Certification: CE, UL certified

四、Product Advantages

1. Balanced spool design free from inlet pressure and exhaust backpressure interference, ensuring stable reversing for pneumatic loops supporting hydraulic system pressurization and accumulator charging

2. MAC patented oval short-stroke coil delivers strong electromagnetic thrust, no burnout risk under long-term AC energization, improving the reliability of the entire hydraulic system auxiliary control circuit

3. Modular convertible structure (NC/NO, internal/external pilot switchable) adapts to reconstruction and upgrading of diverse hydraulic system configurations

4. Dust & oil resistant sealing structure fits harsh workshop surroundings around hydraulic stations, extending the service life of supporting hydraulic pump and hydraulic piston pump units

五、Application Scenarios

This durable pneumatic solenoid valve is commonly installed in:

1. Pilot air control branch of industrial hydraulic system, controlling hydraulic directional valves and oil circuit switching

2. Hydraulic system accumulator inflation and pressure maintaining control

3. Construction machinery, machine tools, automated production line pneumatic clamping & jacking circuits

4. Packaging, printing equipment high-frequency air blowing and material switching units

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Ningbo Hengnuo Hydraulic Drive Co.,Ltd

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4 year

Address: Ningbo, China

Main Product: hydraulic motor, gear box, hydraulic pump , hydraulic valve , hydraulic winch, hydraulic system

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