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CONTROL DEVICES Piloted Unloader Valve Mark 4 - Piloted Unloader Valves for Air Compressors
CONTROL DEVICESPiloted Unloader Valves for Air Compressors

CONTROL DEVICES Piloted Unloader Valve Mark 4

The CONTROL DEVICES Unloader Valve Mark 4 is a piloted unloader valve for air compressors, featuring a 1/2 in outlet size and 3/8 in exhaust size. It is constructed from forged brass and has a maximum air flow of 40…

SKU 3G-OTH-154362

Also listed as: LGM400401CBA1 · LGM40 0401CBA1

Brand
CONTROL DEVICES
Item
Piloted Unloader Valve Mark 4
Part Number
LGM40-0401CBA1
Category
Piloted Unloader Valves for Air Compressors
Available to Order
Also known as:LGM40-0401CBA1CONTROL DEVICES
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Local availability & support — Singapore

Local office
20 Woodlands Link #09-05, Singapore 738733
Phone
+65 8878 8355
Delivery
Same-day or next-business-day delivery within Singapore for in-stock items; 7–14 days for factory-order parts from Europe.
Payment
Invoicing in SGD. PayNow, bank transfer, and corporate PO accepted.
Ships to
Singapore

Technical Specifications

CONTROL DEVICES
Manufacturer Part Number
LGM40-0401CBA1
Exhaust Size
3/8 in
Max Air Flow
40 cfm

Technical Documents

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CONTROL DEVICES Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The CONTROL DEVICES Unloader Valve Mark 4 is a piloted unloader valve for air compressors, featuring a 1/2 in outlet size and 3/8 in exhaust size. It is constructed from forged brass and has a maximum air flow of 40 cfm. The manufacturer part number is LGM40-0401CBA1.

Frequently Asked Questions

What is the CONTROL DEVICES Unloader Valve Mark 4 used for?

The CONTROL DEVICES Unloader Valve Mark 4 is a piloted unloader valve designed for air compressors. It releases trapped air between the compressor pump and check valve, allowing the motor to start unloaded. Common in industrial compressed air systems, it helps reduce startup torque and extends equipment life.

What are the specifications of the CONTROL DEVICES Unloader Valve Mark 4?

The CONTROL DEVICES Unloader Valve Mark 4 (MPN LGM40-0401CBA1) has a 1/2 in outlet size, 3/8 in exhaust size, and a maximum air flow of 40 cfm. It is constructed from forged brass for durability. This piloted unloader valve is suitable for air compressor applications requiring reliable pressure relief.

Where to buy the CONTROL DEVICES Unloader Valve Mark 4 worldwide?

You can source the CONTROL DEVICES Unloader Valve Mark 4 through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to worldwide destinations. Contact us for availability and lead time; we provide competitive pricing and reliable sourcing for this piloted unloader valve.

How to install the CONTROL DEVICES Unloader Valve Mark 4?

Install the CONTROL DEVICES Unloader Valve Mark 4 by connecting the 1/2 in outlet to the compressor discharge line and the 3/8 in exhaust to atmosphere. Ensure the valve is oriented per manufacturer guidelines. Use thread sealant on connections and test for leaks. For specific torque values, consult the compressor manual.

Used in

Common applications for CONTROL DEVICES
Compressed air systems — SB75-0A150 soft seat safety valve with 3/4 in MNPT and 150 psi preset for overpressure protection.
Pneumatic control circuits — VR25-100 vacuum and pressure relief valve with 1/4 in MNPT for combined overpressure and vacuum protection.
Process piping — VRGSS038-001 stainless steel vacuum relief valve with 3/8 in MNPT for corrosive environments.
Tank protection — VRGSS300-001 stainless steel vacuum relief valve with 3 in MNPT for large tanks and pipelines.
Low-pressure pneumatic systems — VR38-100 brass vacuum and pressure relief valve with 3/8 in MNPT for 0-14.7 psi and 0-27 in Hg.
General industrial maintenance — VR75-100 brass vacuum and pressure relief valve with 3/4 in MNPT for compressed air systems.
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CONTROL DEVICES Products

3G Electric supplies CONTROL DEVICES piloted unloader valves for air compressors. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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