EXW Singapore — collect or forward from our Singapore office.

3G Electric
MASTER LOCK S3920 Cable-Locked Squeeze-Trigger Handle Butterfly - Cable-Locked Squeeze-Trigger Handle Butterfly Valve Lockout
MASTER LOCKCable-Locked Squeeze-Trigger Handle Butterfly Valve Lockout

MASTER LOCK S3920 Cable-Locked Squeeze-Trigger Handle Butterfly

The MASTER LOCK Butterfly Valve Lockout (MPN S3920) is a cable-locked squeeze-trigger handle lockout device for lever handle valve types, supplied in red. It is designed to secure butterfly valves in the closed…

SKU 3G-OTH-554975

Also listed as: S 3920 · S-3920

Brand
MASTER LOCK
Item
S3920 Cable-Locked Squeeze-Trigger Handle Butterfly
Part Number
S3920
Category
Cable-Locked Squeeze-Trigger Handle Butterfly Valve Lockout
Available to Order
Trade pricing by quote — replies within 24h
Qty
WhatsApp an engineerMessage via Telegram
No account needed — your quote request goes straight to our engineers. A free account lets you track quotes and re-order faster.
EXW Singapore
Collect or forward from our office
Datasheet on Request
Technical specs
1-Day Quote
Replies within 24h

Local availability & support

Payment
Invoicing in USD. Bank transfer (SWIFT) and corporate PO accepted.

Technical Specifications

MASTER LOCK
Manufacturer Part Number
S3920
Type
For Lever Handle Handle Type, Red
Includes Cable Master Lock
None

Technical Documents

No technical documents available for this product.
Request documentation →
Not sure this is the right part? Get a recommendation.

Need installation or engineering help?

Installation, commissioning, maintenance plans, system design, and bundled product + service quotes — one team handles the full scope.
Talk to an engineer

Ask a question

MASTER LOCK Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The MASTER LOCK Butterfly Valve Lockout (MPN S3920) is a cable-locked squeeze-trigger handle lockout device for lever handle valve types, supplied in red. It is designed to secure butterfly valves in the closed position during maintenance, with no cable included. 3G Electric interprets this demand and delivers the genuine MASTER LOCK product, backed by our specialist expertise across 14 industrial departments — including combustion, pumps, and controls — to ensure you get the right solution for your facility's lockout/tagout needs.

Frequently Asked Questions

What is the MASTER LOCK S3920 butterfly valve lockout used for?

The MASTER LOCK S3920 is a cable-locked squeeze-trigger handle lockout device used to secure lever-handle butterfly valves in the closed position during maintenance. It supports lockout/tagout safety procedures in industrial facilities, helping prevent accidental valve operation while workers are servicing equipment.

What are the specifications of the MASTER LOCK S3920 butterfly valve lockout?

The MASTER LOCK S3920 is a red cable-locked squeeze-trigger handle lockout device designed for lever handle butterfly valves. It is supplied without a cable. The manufacturer part number is S3920, and the brand is MASTER LOCK. It is intended for lockout/tagout safety applications.

Where to buy the MASTER LOCK S3920 butterfly valve lockout worldwide?

3G Electric supplies the genuine MASTER LOCK S3920 butterfly valve lockout to customers worldwide. We handle full logistics, customs clearance, and delivery to your facility. As a global industrial solutions provider, we interpret your demand and source the right safety equipment for your lockout/tagout needs.

How to install the MASTER LOCK S3920 butterfly valve lockout?

To install the MASTER LOCK S3920, first ensure the butterfly valve is fully closed. Place the lockout device over the lever handle, engaging the squeeze-trigger mechanism. Insert a padlock through the locking holes to secure the device. Follow your facility's lockout/tagout procedures and consult the manufacturer's instructions for proper use.

Used in

Common applications for MASTER LOCK
Industrial lockout/tagout — Master Lock 1483BP410ES lockout station with padlocks and safety tags for hazardous energy control.
Commercial office buildings — Master Lock office lever locksets in satin brass or nickel for interior doors in administrative areas.
School and gym lockers — Master Lock 1670 built-in combination locker locks for right-hand mounting on metal lockers.
Equipment and gate security — Master Lock 8154DPF cable lock with 6 ft steel cable for securing equipment and gates.
Toolbox and storage security — Master Lock 176 combination padlock with brass body and steel shackle for lockers and toolboxes.
ADA-compliant locker applications — Master Lock 1676MKADA locker lock for accessible facilities requiring ADA compliance.
Not sure this is the right part? Photo-identify it→

MASTER LOCK Products

3G Electric supplies MASTER LOCK cable-locked squeeze-trigger handle butterfly valve lockout. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

You might also need

Burners & Combustion →Pumps & Compressors →Spare Parts →All Products →

Compatible alternatives & equivalents

More from MASTER LOCK

View all MASTER LOCK parts →

Customer reviews

No reviews yet — be the first

Questions & answers

No questions yet — ask us the first