MASTER LOCK Pneumatic Fitting Lockout: Pneumatic Fitting
The MASTER LOCK Pneumatic Fitting Lockout (MPN S3900) is a male-fittings lockout device designed to isolate pneumatic energy during maintenance. As a MASTER LOCK product, it provides a secure lockout point for male…
SKU 3G-OTH-554366
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Product Description
The MASTER LOCK Pneumatic Fitting Lockout (MPN S3900) is a male-fittings lockout device designed to isolate pneumatic energy during maintenance. As a MASTER LOCK product, it provides a secure lockout point for male pneumatic fittings, supporting safety procedures across industrial facilities.
Supplied to the Philippines — compatible with 60 Hz installations. DHL Express delivery to Manila, Quezon City, Cebu, customs and duties handled door-to-door.
Frequently Asked Questions
What is the MASTER LOCK S3900 pneumatic fitting lockout used for?
The MASTER LOCK S3900 isolates pneumatic energy by locking out male pneumatic fittings during maintenance. It creates a secure lockout point to prevent accidental equipment startup, supporting safety procedures in industrial facilities such as manufacturing plants, refineries, and processing lines.
What are the specifications of the MASTER LOCK S3900?
The MASTER LOCK S3900 is a pneumatic fitting lockout designed for male fittings. Its brand is MASTER LOCK, and the manufacturer part number is S3900. It is a Type: Male Fittings device used to secure pneumatic energy isolation points during maintenance and servicing.
Where to buy the MASTER LOCK S3900 worldwide?
3G Electric supplies the MASTER LOCK S3900 pneumatic fitting lockout to customers worldwide. We handle full logistics, customs clearance, and delivery to your facility. Contact us for pricing and lead time on this safety device for pneumatic lockout applications.
How to install the MASTER LOCK S3900 lockout device?
To install the MASTER LOCK S3900, attach it directly onto the male pneumatic fitting to block airflow. Ensure the fitting is depressurized before installation. Apply a padlock through the lockout hasp to secure the device. Follow your facility's lockout/tagout procedures for safe maintenance.
Used in
Common applications for MASTER LOCKMASTER LOCK Products
3G Electric supplies MASTER LOCK pneumatic fitting lockouts. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

