SP-P1 SP-P2 Plunger Valve and Trigger Valve Set Replacement for Hitachi NR83A NR83A2 NR83A2(S) NR83A3 Framing Nailer Part 877-337 875-638

Tired of your framing nailer failing to fire smoothly, leaking air or losing pressure mid-job? Our trigger & plunger valve replacement kit brings your nail gun back to factory performance in minutes!What You Get1× 877-337 SP-P1 plunger valve + 1× 875-638 SP-P2 trigger valve, a complete matching valve assembly for quick one-time repair.Wide Perfect FitWondering if it fits your tool? This set matches NR83A / NR83A2 / NR83A2(S) / NR83A3 framing nailers, perfectly replaces original part numbers for seamless swap.Tough Rust-Resistant BuildNo more flimsy cheap valves that corrode fast! The plunger adopts solid brass, while the trigger body uses galvanized metal—moisture-proof, sturdy and built for long workshop daily use.Stable Air Pressure SealEver had weak nail driving due to poor sealing? Our plunger valve locks air tightly to sustain steady pressure, letting the piston push nails evenly every single shot.Standard Safe Working RuleRemember this small tip before firing: press the nailer firmly against your work surface first, then pull the trigger. The trigger valve controls compressed air flow for safe, controlled nail operation.Why Choose Our Valve KitDitch expensive whole nail gun replacements! This affordable repair set restores your pneumatic nailer’s original power, ideal for carpentry, construction and all DIY framing projects.

• Exact Replacement Valve Kit: Includes 877-337 plunger valve (SP-P1) & 875-638 trigger valve (SP-P2), direct fit replacement set for framing nailer
• Wide Model Compatibility: Fits NR83A NR83A2 NR83A2(S) NR83A3 pneumatic nail gun, compatible with corresponding power tool part numbers
• Premium Rust-Proof Material: Brass plunger valve + galvanized trigger valve body, sturdy, moisture resistant for long term workshop use
• Stable Air Sealing Performance: Well-sealed plunger maintains steady air pressure to push piston, ensures smooth nail driving operation
• Standard Safety Operation Logic: Trigger controls compressed air flow; contact tip needs to touch surface before pulling trigger to fire normally