![S3921 Butterfly Valve Lockout Device](http://cdn.masterlock.com/masterlock/microsite/content/img/products/butterfly-main-background.jpg)
Butterfly Valve Lockout
With an adjustable design the S3920, Butterfly Valve Lockout Device is easy to use and applies in seconds
- Patent Pending
![S3921 Butterfly Valve Lockout Device](http://cdn.masterlock.com/masterlock/microsite/content/img/products/butterfly-main.png)
S3921 Butterfly Valve Lockout Device with Cable Lockout
- S3921, Includes one S806CBL3 3 Foot (91.4cm) Adjustable Cable Lockout and one S3920 Butterfly Valve Lockout Device.
- Already have a cable lockout device? The S3920 includes one Butterfly Valve Lockout Device only.
![Butterfly Valve Lockout Device with Cable Lockout](http://cdn.masterlock.com/masterlock/microsite/content/img/products/butterfly-s3921-s806cbl3.jpg)
Need more than a 3-foot (91.4cm) cable? S806 is available in custom lengths from 2 (61cm) to 50 feet (15.24m). Contact us for more details.
Simple, quick installation
![Step 1](http://cdn.masterlock.com/masterlock/microsite/content/img/products/S3920-butterfly-valve-application-1.jpg)
Step 1
Place device in between butterfly valve handle and lever
![Step 2](http://cdn.masterlock.com/masterlock/microsite/content/img/products/S3920-butterfly-valve-application-2.jpg)
Step 2
Feed cable through desired eyelet hole
![Step 3](http://cdn.masterlock.com/masterlock/microsite/content/img/products/S3920-butterfly-valve-application-3.jpg)
Step 3
Wrap cable around valve stem and back through S806 body
![Step 4](http://cdn.masterlock.com/masterlock/microsite/content/img/products/S3920-butterfly-valve-application-4.jpg)
Step 4
Cinch cable tight
![Step 5](http://cdn.masterlock.com/masterlock/microsite/content/img/products/S3920-butterfly-valve-application-5.jpg)
Step 5
Apply a safety padlock to effectively lockout. Cinch tighter even with padlock applied!
Video: S3920/S3921 Butterfly Lockout Valve
Product Family
Valve Lockout Devices
![485 â Rotating Gate Valve Lockout](http://cdn.masterlock.com/masterlock/microsite/content/img/products/butterfly-485-Rotating-Gate-Valve-Lockout.jpg)
485 – Rotating Gate Valve Lockout
Onward/Inward rotation allows for easier installation & storage. 5 Models in one! (Fits 1" (2.5cm) to 13" (33cm) Diameter Valves)
![S3068 Seal Tight Handle-On Ball Valve Lockout](http://cdn.masterlock.com/masterlock/microsite/content/img/products/butterfly-S3068-On-Vertical-Pipe.jpg)
S3068 – Seal Tight Handle-On Ball Valve Lockout
Clamps tight on handle stop to prevent accidental activation
![S3081 Adjustable Ball Valve Lockout](http://cdn.masterlock.com/masterlock/microsite/content/img/products/butterfly-S3081-410RED-Locking-Out-Ball-Valve.jpg)
S3081 – Adjustable Ball Valve Lockout
Use with S806 cable lockout for the most secure fit
![468L Seal Tight Handle Off Lockout](http://cdn.masterlock.com/masterlock/microsite/content/img/products/butterfly-468L-410YLW-Locking-Out-Ball-Valve.jpg)
468L – Seal Tight Handle Off Lockout
Encloses valve stem, with the handle removed, to make accidental reactivation nearly impossible
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Specifications
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Product Number | S3920 |
Overall Length | 2.14" (54.2 mm) |
Overall Width | 1.95" (49.5 mm) |
Overall Height (closed position) | 1.32" (33.5mm) |
Overall Height (open position) | 1.80" (45.7mm) |
Max Handle Width | 1.72" (43.7mm) |
# Adjustable Fits | 5 adjustment angles ranging from 16° - 35° |
Product Weight | 0.10lbs (45.3g) |
Color Finish | Red |
Body Material | PBT and PC Zenex™ |
Component Material | Stainless Steel (Rivet) |
Chemical Resistance | Silicone oils, hexane, solvents, bleaches, dilute acetic acid and naphtha |
Corrosion Resistance | ASTM F883-09 Section 11.3, Grade 6 Weathering-Corrosion Test |
Operating Temperature | -40° F to 200° F (40° C to 93° C) |
REACH Compliant | Yes |
Prop 65 Compliant | Yes |
ATEX Certified | Yes |
Master Carton Quantity | 24 |
UPC Master Carton | 10071649198431 |
Price/Unit | $19.99 |