Badger Range Guard System Valve Actuator (SVA) - 87-120042-001
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Wholesale PricingThe Badger 87-120042-001 System Valve Actuator (SVA) is the pneumatic slave component for Badger Range Guard wet chemical and Industry Guard dry chemical fire suppression systems. In the mechanical chain of a suppression network, the SVA serves as the kinetic bridge between the control head and the agent cylinder. When the system is triggered -- via a manual pull station or a detection event -- high-pressure nitrogen or CO2 travels through the actuation tubing and drives the SVA's internal piston, which mechanically depresses the extinguisher valve stem to initiate an instantaneous discharge.
The 87-120042-001 features a spring-loaded locking plunger that keeps the piston in the extended position until the cylinder is completely empty. This fail-safe mechanism prevents a partial discharge if actuation pressure is lost mid-sequence, ensuring the full volume of suppression agent reaches the hazard regardless of pressure fluctuations during the event. Multiple 1/8" NPT ports allow for flexible tubing configurations in both single-tank and multi-cylinder manifolds.
| Feature | Details |
|---|---|
| Manufacturer | Badger Fire Protection |
| Part Number | 87-120042-001 |
| System Compatibility | Range Guard, Industry Guard, Kidde WHDR / WHDR 125 |
| Actuation Type | Pneumatic (nitrogen or CO2) |
| Piston Mechanism | Spring-loaded with mechanical locking plunger |
| Port Size | 1/8" NPT Female (actuation in/out) |
| Maintenance Cycle | 6-year internal audit |
| Certifications | UL Listed, ULC Listed, FM Approved |
Individual Cylinder Actuation
Every agent tank in the manifold must be equipped with its own dedicated 87-120042-001 actuator to ensure consistent pneumatic pressure is delivered to each cylinder simultaneously during a discharge event.
Actuation Line Integrity
Use only 1/4" O.D. copper tubing or braided high-pressure nitrogen hose (P/N 87-120045-00X). All connections must be verified gas-tight before commissioning. A pressure drop in the actuation line can result in incomplete piston travel and a failed discharge.
Vent Check Protocol
The final SVA in the actuation line must have a 1/8" NPT vent check installed in the outlet port. This prevents the gradual accumulation of residual pressure that could cause an accidental discharge.
6-Year O-Ring Audit
During maintenance or recharges, the internal O-ring seals (P/N 87-120074-001) must be inspected for hardening, cracking, or compression set. Brittle O-rings can allow pneumatic bypass, preventing the piston from fully depressing the valve stem and resulting in a failed actuation.
Is the 87-120042-001 compatible with Kidde WHDR 125 systems?
Yes. Kidde and Badger utilize the same pneumatic platform for these pre-engineered systems, making the 87-120042-001 a direct OEM equivalent for actuator part numbers found in both the Kidde WHDR and Kidde WHDR 125 series.
Can I use the SVA as a manual trigger?
No. The SVA is a slave actuator that depends entirely on a pneumatic signal from a master control head. Manual triggering must be performed at the control head or via a dedicated remote manual pull station.
Why does the piston have a mechanical lock?
The locking plunger prevents the piston from retracting until the cylinder has fully discharged. This ensures the complete volume of suppression agent reaches the hazard even if primary actuation pressure fluctuates during the discharge event.
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