The Jarvis Model USSS-1 is a pneumatically operated, high-speed captive bolt stunner designed for efficient and humane stunning of cattle in high-production meat processing environments. Engineered to deliver a single, powerful shot, the USSS-1 ensures animal insensibility to pain while enhancing meat quality and operator safety.
 
Designed with a robust pneumatic drive system and a firing mechanism that activates only once per cycle, the USSS-1 guarantees consistent stunning without multiple firings. Its lightweight build and low-recoil operation reduce operator fatigue during continuous use. The tool's dual-trigger, two-hand control system ensures safety during handling, while its corrosion-resistant construction allows for easy cleaning and maintenance.
 
Weighing only 32.4 lbs (14.7 kg), the USSS-1 combines power with portability. With a maximum operating pressure of 190 psi and a penetrating shaft diameter of 0.625 in (15.9 mm), it delivers precise and effective stunning with every shot, making it ideal for facilities prioritizing humane processing and superior efficiency.
 
Key Features:
Humane and Effective Stunning:
Renders animals instantly insensible to pain using a single-shot, no-repeat-fire mechanism.
Improves meat quality through more effective stunning.
Advanced Pneumatic Operation:
Air-powered with no air injection into the animal.
Operates at 160–190 psi with 1.45 ft³ (41 L) of air per cycle.
Operator Safety and Comfort:
Dual-trigger two-hand control for added safety.
Low recoil minimizes fatigue in extended use.
Durable and Low-Maintenance Design:
Easy to clean and repair.
Constructed from corrosion-resistant materials for longevity.
Compact and Lightweight:
Measures 19 x 5.5 x 15 in (483 x 140 x 381 mm).
Weighs only 32.4 lbs (14.7 kg), ideal for high-mobility environments.
 
The Jarvis USSS-1 Pneumatic Stunner is the trusted choice for humane, safe, and efficient cattle stunning in modern meat processing operations.
 
Technical Specifications:
Drive: Pneumatic
Model USSS-1
Operating Pressure (maximum): 160 – 190 psi / 11 – 13.1 bar
Air Consumption (per cycle): 1.45 ft³ / 41 L
Penetrating Shaft Diameter: 0.625 in / 15.9 mm
Control Handles: Dual Triggers
Control Type: Pneumatic
Overall Dimensions (L x W x H): 19 x 5.5 x 15 in / 483 x 140 x 381 mm
Weight: 32.4 lbs / 14.7 kg
 
Equipment Selection and Accessories:
Side handle for use in knocker box – Order Number: 4044004
Rear handle for use in “V” or center track restrainer – Order Number: 4044005
Rear handle for use in knocker box – Order Number: 4044013
 
Air Compressor:
460 V / 60 Hz / 5 hp – Order Number: 4061361
460 V / 60 Hz / 10 hp – Order Number: 4061366
 
Model AST-101 Pneumatic Stunner Tester (includes test stand and control box)
115 V, 60 Hz – Order Number: 4016004
230 V, 60 Hz – Order Number: 4016005
 
Air Filter-Regulator-Lubricator (64 oz / 1.9 L Capacity) – Order Number: 3022100
Air Hose Assembly (coiled, 25 ft) – Order Number: 3059045
Balancer – Order Number: 4042046