B&G Sprayer Diagram & Parts List
B&G Parts Diagram
B&G Repair and Maintenance Manual
Item Number |
Part Number |
Order Number |
Description |
| 1 | T-100 | 22025000 | B&G T-100 SS Replacement Tank-1 gal |
| 2 | OS-297 | 22025700 | B&G OS-297 Syphon Tube -1 gal |
| 3 | HA-298 | 22025300 | B&G HA-298 1/8" Hose Adapter |
| 4 | TB-1 | 22049477 | B&G TB-1 Plastic Tank Bottom Black |
| 5 | TT-1 | 22049476 | B&G TT-1 Plastic Tank Top Black |
| 8 | 5700-H(NA) | 22049475 | Holder, Tip(not used with item 5) |
| 9 | D-50 | 22030100 | Hose, 4 ft, red |
| 10 | D-51-P | 22030400 | B&G D-51-P Washer Coupling Hose |
| 11 | PO-265 | 22027000 | B&G Pump Assembly Unit-1 gallon |
| 12 | P-275 | 22029820 | B&G P-275 Brass Handle |
| 13 | P-276 | 22029900 | B&G Lock Spring SS |
| 14 | P-274 | 22029700 | Pump Brass Cap |
| 15 | B&G PO-273 | 22029500 | PO-273 Plunger Rod 8-1/4-(1 gallon) |
| 16 | P-269 | 22028250 | B&G P-269-SS Nut SS Plunger |
| 17 | P-272 | 22029200 | B&G P-272 Back Plate SS |
| 18-Poly Cup | NP-277 | 22029000 | B&G NP-277 Polypropylene Cup |
| 18-Leather Cup | NP-271 | 22028800 | B&G NP-271 Leather Cup |
| 19 | NP-270 | 22028600 | B&G NP-270 Spreader FR PL Cup |
| 20 | P-269A | 22028400 | B&G P-269A Washer SS Lock |
| 21 | P-268 | 22028000 | B&G P-268 K-Seal Tank Gasket |
| 22 | PO-267 | 22027500 | B&G PO-267 Kit, 1 Gallon Pump Cycle |
| 23 | PV-266 | 22027200 | B&G PV-266 Check Valve/Viton |
| 24-18" | 220 | 22042204 | B&G 220 Extenda Ban-18" with Tip Contains:
|
| 24-9" | 120 | 22042100 | B&G 120 Valve 9' Extension Extenda Ban with Tip Contains:
|
| 25 | VB-147 | 22044450 | B&G VB-147 Valve Body Kit |
| 26 | VT-140 | 22042800 | B&G VT-140 Valve Trigger Kit Contains: Trigger, Valve Housing & Scew |
| 30 | PN-150-2 | 22042455 | B&G PN-150-2 Packing Nut Stainless |
| 30A | PN-150-1 | 22042454 | B&G Brass Pack Nut-PN-150-1(1999-2000) |
| 31 | VP-151 | 22045099 | B&G VP-151 Valve Packing |
| 32 | PN-150(NA) | 22044900 | Nut, Packing (Prior to 1999) |
| 34 | AS-148 | 22044500 | B&G AS-148 Adjustment Screw, Lock Nut, Snap Ring |
| 36 | SL-162 | 22046700 | B&G SL-162 Safety Locknut |
| 37 | MS-145-50 | 22043800 | B&G Kit, MS-145-50 Strainer, Screen 50 Mesh |
| 39 | NG-146 | 22044200 | B&G NG-146 Nylon Gasket |
| 40 | SA-143 | 22043400 | B&G SA-143 Housing, Strainer Adapter |
| 41 | VC-152 VC-153 |
22045300 22045400 |
B&G VC-152 Valve Cable 8" B&G VC-153 Valve Cable 18" |
| 42 | VE-154 VE-155 |
22045500 22045600 |
B&G Extension, VE-154 8" B&G Extension, VE-155 18" |
| 43 | VS-156 | 22045700 | B&G VS-156 Valve Spring |
| 44 | SSL-157 | 22045900 | B&G SSL-157 Square Nut |
| 45 | SS-158 Seat tem | 22046100 | B&G SS-158 Seat Stem |
| 46 | SP-159 | 22046300 | B&G SP-159 Soft Seat Gasket |
| 48 | 9751-M | 22049300 | B&G 9751-M Tip Assb Modified |
| 49 | 4190 | 22034700 | B&G 4190 Gasket Viton |
| 50 | 5800-CC | 22049467 | B&G 5800-CC Tip Only |
| 51 | 4596 | 22034500 | B&G 4596 Retainer |
| 52 | 5700-B | 22049200 | B&G 5700-B Tip Extension, Crack and Crevice |
B&G Sprayer Parts Diagram & Parts List
Use our B&G sprayer parts diagram below to identify the exact replacement component you need for your 1-gallon stainless steel sprayer. Each numbered item on the diagram corresponds to a specific part number, order number, and direct link to purchase.
Having trouble finding the right product or need additional information? Please call us at 1-800-476-3368
How to Use the B&G Parts Diagram
The B&G parts diagram above shows an exploded view of the 1-gallon stainless steel tank sprayer, with each component labeled by item number. To find the part you need, locate the numbered callout on the diagram that matches the area of your sprayer showing wear or failure. Then reference the corresponding row in the B&G sprayer parts list table for the part number, order number, and description.
For example, if your sprayer is losing pressure during pumping, the issue is often related to the pump assembly (Item 11, PO-265) or the pump gasket (Item 21, P-268). If you notice dripping from the tip when the valve is closed, the seat gasket (Item 46, SP-159) or the valve spring (Item 43, VS-156) may need replacement. Matching symptoms to diagram locations saves time and prevents ordering the wrong component.
Most Commonly Replaced B&G Sprayer Parts
Certain parts of the B&G sprayer wear out faster than others due to regular contact with chemical solutions and repeated mechanical use. The pump gasket (P-268) and polypropylene cup (NP-277) are among the first to show signs of deterioration, especially when acidic or oil-based products are used frequently. The check valve (PV-266) is another high-turnover item, since a failing check valve prevents the tank from building or holding pressure.
On the valve end, the valve packing (VP-151) and packing nut (PN-150-2) are common culprits behind leaks at the wand connection. The hose coupling washer (D-51-P) can also crack or flatten over time, causing leaks where the hose meets the tank. If you're unsure which parts to stock, our B&G Sprayer Tune Up Kit bundles the most frequently needed gaskets and seals into a single purchase.
B&G Parts List: Tank, Pump, and Valve Components Explained
The B&G parts list covers three main sections of the sprayer: the tank assembly, the pump assembly, and the valve and wand assembly.
The tank assembly includes the stainless steel tank (T-100), the syphon tube (OS-297), the hose adapter (HA-298), and the plastic tank top and bottom covers (TT-1 and TB-1). These parts form the pressurized reservoir that holds your treatment solution.
The pump assembly is responsible for building and maintaining air pressure inside the tank. Key pump components on the B&G parts list include the complete pump unit (PO-265), the plunger rod (PO-273), the brass handle (P-275), the back plate (P-272), the polypropylene or leather cup (NP-277 or NP-271), and the pump cycle kit (PO-267). When the pump fails to compress air or the plunger moves without resistance, one or more of these parts typically needs replacement.
The valve and wand assembly controls the flow of solution from the tank to the spray tip. This section includes the valve body kit (VB-147), the valve trigger kit (VT-140), the valve cable, the valve spring (VS-156), and the Extenda-Ban wand assemblies available in 9-inch (120) and 18-inch (220) configurations. The strainer adapter (SA-143) and 50-mesh screen (MS-145-50) sit at the junction between the hose and wand, filtering debris before it reaches the spray tip.
B&G Sprayer Parts Diagram FAQ
What size B&G sprayer does this parts diagram apply to?
This B&G sprayer parts diagram corresponds to the 1-gallon stainless steel tank sprayer, which is the most widely used model in pest control. B&G also manufactures 2-gallon models that share many of the same valve and wand components but use a different tank, syphon tube, and plunger rod length. If you have a 2-gallon unit, contact us at 1-800-476-3368 to confirm part compatibility before ordering.
How often should I replace gaskets and seals on my B&G sprayer?
The answer depends on how frequently you use the sprayer and which chemicals you run through it. For pest control operators using their B&G daily, inspecting gaskets, the pump cup, and the check valve every three months is a good practice. Homeowners who use their sprayer seasonally should inspect these parts at the start of each treatment season. Oil-based concentrates and emulsifiable concentrates (ECs) break down rubber and polypropylene components faster than water-based solutions.
My B&G sprayer is not holding pressure. Which parts should I check first?
Start with the pump gasket (P-268), as a cracked or dried-out gasket is the most common cause of pressure loss. If the gasket looks intact, check the polypropylene cup (NP-277) and spreader plate (NP-270) inside the pump tube. A worn cup won't create a proper seal during the pump stroke. Also, inspect the check valve (PV-266) at the base of the pump. If the check valve fails, liquid enters the pump cylinder during pressurization instead of staying in the tank, which prevents proper air compression.
Can I use this B&G parts list to order replacement parts directly?
Yes. Every item in our B&G sprayer parts list links directly to the product page where you can add it to your cart. Each listing includes the B&G part number, our order number, and a full description so you can verify compatibility. We ship from warehouses in Georgia and Arizona, and orders include fast, free shipping.
Where can I find the B&G repair manual for disassembly instructions?
We host the official B&G Repair and Maintenance Manual as a downloadable PDF. It includes step-by-step instructions for disassembling the pump, replacing internal components, adjusting the valve, and troubleshooting common issues like leaks, pressure loss, and spray pattern problems. If you need additional help, our team is available by phone at 1-800-476-3368 or through live chat.