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This genuine OEM trigger valve in your nailer or stapler works in conjunction with the head valve. When you press the trigger valve, it creates a pressure difference between the air reservoir and the cylinder and causes the head valve to open and release compressed air to drive the nail or staple into the material you are working on. It is commonly found in the handle or grip area of the tool. If the trigger becomes stiff or difficult to press, the trigger valve may be damaged. To replace the trigger valve, begin by removing the magazine and retainer caps for the nosepiece guard. Take out the nosepiece from the housing and remove the roll pins securing the piston. Pull back the plastic guard on the housing, detach the strap securing the piston, and extract the piston from your tool. You can access and remove the trigger valve by taking out the O-ring and the pin that holds the trigger in place. Before reassembling the housing, remember to apply lubricant to the O-rings.
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We have a dedicated staff with decades of collective experience in helping customers just like you purchase parts to repair their products.
All our customer repair instructions are solicited directly from other customers just like you who have purchased and replaced this exact part.
Trigger leaked air
Robert from Toledo, Ohio
Driver pin was broken and trigger valve was leaking
Dwight from Puyallup, Washington
Air leak
Terry from LAKE OZARK, Missouri
Nail gun would not fire.
Rick from Rancho Cucamonga, California
Air leaking through trigger mechanism wouldnÆt fire
Steven from Hemet, California
Nailer would leak air at trigger
Gabriel from Wallingford, Connecticut
| Brand | Model Number | Description |
|---|---|---|
| Bostitch | BFN21PL | Nailer - Shell 21pl Bostictch Bull |
| Bostitch | BRN175 | Nailer - Bull Roof Nail 1 3/4 |
| Bostitch | BT1855 | Nailer - Oil-Free Brad Nailer |
| Bostitch | BT1855K | Nailer - 18 Gauge Brad Nailer |
| Craftsman | CMP21PL | Nailer - 21* Plstc Frmng Nler |
| Bostitch | DA1564K | Nailer - 15 Gauge "DA" Style Angled Finish Nailer Kit |
| DeWALT | DWFP1838R | Nailer - Stapler |
| Bostitch | EHF1838K | Nailer - Flooring Stapler |
| Black and Decker | FC350B | Nailer - 3-1/2 Framing Nailer |
| Bostitch | FN1664K | Nailer - 16 G Finish Nailer |
| Porter Cable | FR350B | Nailer - 3-1/2" Framing Nailer |
| Porter Cable | FR350BR | Nailer - Full Round Head Framing Nailer |
| Bostitch | LHF2025K | Nailer - Flooring Stapler |
| Bostitch | N62FNB | Nailer - Finish Nailer |
| Porter Cable | RN175B | Nailer - Coil Roofing Nailer |
| Bostitch | SL1838BC | Nailer - Cap Stapler |
| Bostitch | SX1838 | Nailer - Pneumatic Brad Nailer & Stapler |
| Bostitch | SX1838K | Nailer - Oil-Free Stapler |
Some of the parts we sell are eligible for mail-in rebates since we can recycle them. We will display any applicable rebates in your shopping cart. To redeem your rebate, contact Customer Service after you have received your part.
