SP-P2 SP-P3 Plunger Valve and Trigger Valve Assembly Replacement 884-111 875-638 ​Fit for Hitachi NR83A NR83A2 NR83A2(S) NR83A3 Framing Nailer 【Replaces Part Number】:SP-P2 trigger valve assembly part number is 877-335 875-638, SP-P3 plunger valve part number is 884-111.SP-P2 SP-P3 Trigger and plunger valve kit fit for Hitachi NR83A NR83A2 NR83A2(S) NR83A3. 【 High-quality materials】:The plunger valve is crafted from brass, while the trigger valve's main body is constructed with galvanized material. It exhibits a superior luster and texture, exceptional robustness, as well as excellent resistance to moisture and rust, ensuring long-lasting durability.​​​​ 【Function】:The plunger valve assembly regulates the motion of the driver or piston within the nail gun, enabling compressed air to propel the driver forward for efficient nail penetration into materials. The effective sealing of the plunger valve is crucial in maintaining the necessary air pressure for proper nail activation.​​ 【Easy to use】:The trigger valve assembly regulates the compressed air flow to both the plunger valve and driver. Activation of the trigger initiates the opening of the valve, allowing compressed air to be directed towards the plunger valve. Prior to pulling the trigger, it is necessary for it to be pressed against a work surface. Regular cleaning and lubrication are essential in ensuring optimal functionality of these components and prolonging their lifespan. 【 Service after sale】:So that you can truly experience zero risk when using our trigger and plunger valve kit, please feel free to contact us at any time if you encounter any issues during the process. We are here to assist you and wish you a happy life!