PRO GRADE 15LT SHUT-OFF REPAIR KIT SILVAN 183863

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PRO GRADE 15LT SHUT-OFF REPAIR KIT SILVAN 183863 at a glance

The Pro Grade 15L Shut-Off Repair Kit – Part Number 183863 is a genuine replacement service kit designed for the shut-off (trigger) assembly of the Silvan ProGrade 15L Backpack/No-Leak Sprayer range.

This repair kit is used to restore proper operation of the spray gun’s trigger and internal shut-off valve. Over time, seals and internal components can wear due to chemical exposure and regular use. The 183863 repair kit allows operators to refurbish the shut-off mechanism instead of replacing the entire spray gun assembly, helping maintain optimal spraying performance.

Features & Benefits

Restores Trigger Performance
*Replaces worn internal shut-off components
*Restores smooth trigger action
*Ensures proper on/off spray control

Prevents Leaks
*Replaces degraded seals and internal parts
*Helps eliminate drips from the trigger area
*Improves sealing performance under pressure

Cost-Effective Maintenance
*More economical than replacing the full shut-off assembly
*Extends the working life of the sprayer
*Ideal for preventative maintenance programs

Maintains Spray Accuracy
*Ensures consistent pressure control
*Helps maintain uniform spray patterns
*Reduces chemical wastage caused by leaking valves

Specifications

Manufacturer: Silvan
Product Name: Pro Grade 15L Shut-Off Repair Kit
Part Number: 183863
Product Type: Shut-off / Trigger Repair Kit
Suitable For: Silvan ProGrade 15L Backpack / No-Leak Sprayers (including models such as 190550 and 190547)
Function: Service and rebuild kit for spray gun shut-off assembly
Contents: Internal seals, O-rings, and shut-off components required to service the trigger valve

The Pro Grade 15L Shut-Off Repair Kit (183863) is used for servicing and maintaining Silvan ProGrade sprayers in applications such as:

Herbicide spraying
Insecticide application
Fertiliser and liquid nutrient spraying
Horticulture and nursery operations
Landscape and garden maintenance
Agricultural chemical application

This repair kit is essential for keeping ProGrade backpack sprayers operating efficiently, preventing leaks, and maintaining safe and accurate chemical application.

Fill the 15-litre tank with water and add the appropriate concentrate chemical according to product instructions. Pump the handle to build pressure before spraying, then use the trigger to apply the spray to target areas. Maintain consistent pressure by re-pumping as needed during application. Always wear appropriate PPE and ensure the shut-off valve is engaged when not in use. Tips: This sprayer is ideal for small targeted areas and spot treatments where precision is needed, rather than large-scale applications. Keep the nozzle at a consistent distance from the target surface for even coverage, and work in calm conditions to minimise drift. Disclaimer: The information provided above is sourced from reputable industry references including Dairy Australia, FutureBeef, MLA, Business Queensland, GRDC and other recognised Australian agricultural authorities. It is intended as a general guide only. Results vary depending on your specific situation, animal class, soil type, climate and management practices. Tom Grady Rural Merchandise recommends consulting with your veterinarian, agronomist or relevant specialist before making product or management decisions for your property. Contact our team on (07) 5482 1692 — we're happy to help.

Common Questions

What sprayers does this repair kit fit?

The Pro Grade 15L Shut-Off Repair Kit (Part Number 183863) is designed for Silvan ProGrade 15L Backpack and No-Leak Sprayers, including models 190550 and 190547.

What's included in the kit?

The kit contains internal seals, O-rings, and shut-off components needed to service the trigger valve assembly of your sprayer.

When should I use this repair kit?

Use this kit when the trigger or shut-off valve becomes worn due to chemical exposure and regular use. Signs include poor trigger action, leaking from the trigger area, or loss of proper on/off spray control. It's also useful for preventative maintenance to keep your sprayer performing well.

Is this cheaper than buying a new spray gun?

Yes. This repair kit lets you refurbish just the shut-off mechanism instead of replacing the entire spray gun assembly, making it a more economical option that extends the working life of your sprayer.

Do you ship this product Australia-wide?

Yes, this product ships Australia-wide via road courier. It is too large or heavy for Australia Post. Call us on (07) 5482 1692 if you have any questions about delivery to your area.

Can I Click & Collect from Gympie?

Yes — Click & Collect is available from our store at 55 Tozer St, Gympie. Open Mon–Fri 8am–5pm and Sat 8am–12pm. Click & Collect is FREE on orders of $175 or more, or a flat $10 on orders under $175. Select Click & Collect at checkout and we will have your order ready.

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SKU: 183863
Categories: Farm Supplies Sprayers
Tags: cat:sprayers Farm Silvan