General Pump Y60100831 Bayonet Bolt 1/2" BSPP VB75 - 1905

Overview of the General Pump Y60100831

The General Pump Y60100831 is an OEM bayonet bolt with 1/2" BSPP threading, precision-engineered to deliver a secure, leak-free high-pressure connection in VB75 series unloaders - keeping your pressure washer running safely and reliably.

Why You'll Love the Y60100831 Bayonet Bolt

Whether you're a field technician or an equipment owner maintaining VB75 unloaders, these are the benefits that matter most during service and repair.

• Reliable sealing under high pressure – The correct 1/2" BSPP parallel thread and bayonet engagement create a dependable seal that resists leaks even at the demanding working pressures typical of VB75 unloaders in commercial applications.

• OEM-correct fit for VB75 unloaders – The Y60100831 is specifically engineered for certain General Pump unloader models, eliminating the guesswork that comes with generic fittings. It provides the correct threaded connection in unloader assemblies every time.

• Reduced downtime during repairs – Having the right replacement bolt on hand means faster turnarounds when unloader components need attention. No hunting for approximations - just pull a spare and get the line back up.

• Durable construction for industrial use – Built from corrosion-resistant brass, this bolt handles repeated exposure to high-pressure water, detergents, and thermal cycling without degrading prematurely.

• Simple to install – Standard hand tools are all you need. Clear orientation and familiar thread geometry make replacement straightforward for most maintenance teams.

What Makes This Bayonet Bolt Different

Most generic banjo bolts may cause improper alignment and fluid flow issues because they aren't created to match the precise internal geometry of General Pump unloaders. The Y60100831 is built differently:

• Engineered for VB75 geometry – The bolt length, shoulder profile, and bayonet engagement are matched specifically to the VB75 unloader body, ensuring that internal flow passages align correctly and fluid moves through the assembly as designed.

• True 1/2" BSPP thread quality – The Y60100831 is precision-machined for exact thread matching and pressure tolerances. The parallel thread finish promotes consistent contact with sealing washers, a detail that generic alternatives frequently miss.

• Backed by General Pump's application expertise – This component is specified for high-pressure, high-cycle duty in systems that can reach approximately 3,650 PSI and handle flow rates up to 8.0 GPM. That level of engineering reduces the risk of premature failure and keeps trapped pressure under control during gun-off cycles.

How It Works

Here's a straightforward look at how the Y60100831 interacts with the VB75 unloader in practice.

1. Seating in the VB75 unloader body The bayonet bolt is inserted into the corresponding female port in the unloader housing. Its hollow construction positions the internal flow passage in line with the bypass circuit, ready to carry pressurized water.

2. Creating a secure, pressure-rated connection As the bolt is tightened, the BSPP threads draw the sealing surfaces together against the gasket or sealing washer. This forms a reliable joint rated for the full working pressure range of the VB75 series.

3. Supporting stable flow and pressure control With the bolt correctly installed, water flows through the unloader as designed - diverting to bypass when the trigger gun closes and returning to full output when the trigger opens. The result is smooth, predictable pressure regulation.

Product Details

A quick, scannable spec overview so you can check fit and compatibility before placing orders.

• Part number: Y60100831 - Bayonet Bolt for VB75 unloaders

• Thread type and size: 1/2" BSPP (British Standard Pipe Parallel); note that the related Banjo Bolt variant features 3/8 inch BSP threading for different port configurations

• Intended assembly: Designed to secure and seal fluid connections in General Pump VB75 series unloader valve assemblies used on pressure washer systems. The Y60100831 acts as a fastener for fluid connections in unloader valve assemblies.

• Material: Brass - corrosion-resistant, machinable, and well-suited for high-pressure water and detergent environments

• Pressure environment: Specified for the typical working pressures of VB75 unloaders (up to approximately 3,650 PSI / 252 bar) and fluid temperatures up to roughly 195°F

• Compatible models: YVB75KDMN, YVB55KDM, and other VB75 variants; the Banjo Bolt is also compatible with model YVB135KDM

• What's included: One (1) OEM bayonet bolt, part number Y60100831. Sealing washers or gaskets are typically sourced separately - check your unloader's parts list to confirm the correct seal specification.

• Important note: The Y60100831 is not a complete pump or unloader valve but an OEM component. It is designed to replace worn or damaged fittings in pressure washing applications.

• Identification tips: Check the VB75 unloader model tag and compare your existing bolt's markings and thread size. BSPP threads are parallel, not tapered - confirm this before ordering.

Who It's For

Not sure if Y60100831 is the right part? Here's who typically needs it.

• Professional pressure washing contractors – Operators running rigs with General Pump VB75 unloaders who need dependable replacement hardware to keep jobs on schedule.

• Service centers and repair shops – Technicians maintaining fleets of commercial washers that frequently service General Pump unloaders and want genuine parts on the shelf.

• Facility maintenance teams – In-house crews responsible for on-site pressure washing equipment in plants, warehouses, and logistics hubs using VB75-equipped pump systems.

• OEMs and equipment builders – Manufacturers integrating VB75 unloaders into custom wash systems who standardize on genuine fasteners for reliability and consistency.

If your system uses a different unloader family, verify the part number and thread specifications before ordering to avoid compatibility issues.

Frequently Asked Questions

Below are answers to the most common questions about the General Pump Y60100831 bayonet bolt.

Is Y60100831 compatible with all General Pump unloaders? No. The Bayonet Bolt is part number Y60100831 and is engineered for VB75 series models. Always confirm your unloader series before selecting this bolt. The Banjo Bolt is an OEM part from General Pump and covers additional models, but thread sizes and features differ between variants.

How can I confirm I have a 1/2" BSPP thread? Measure the major thread diameter and pitch, and note that BSPP threads are parallel - the diameter stays consistent along the entire threaded length. If your existing bolt tapers, you likely need a BSPT fitting, not this part.

Do I need special tools to install it? No. Standard hand tools are typically all that's required. Hand-thread the bolt initially to avoid cross-threading, then snug it down carefully. No published torque specification exists for this bolt, so use controlled force and avoid over-tightening, which can deform sealing surfaces.

Can I reuse the old sealing washer or gasket? It's best practice to inspect all seals during repair and replace any that show wear, compression set, or damage. Reusing a degraded washer risks creating a new leak path under high pressure.

What maintenance practices extend the life of the bolt? During routine unloader service, check for corrosion, thread damage, and erosion around the internal fluid passage. VB75 unloaders generally benefit from seal inspection approximately every 400 working hours, with deeper internal wear checks around 800 hours.

Ready to Restore Your VB75 Unloader?

Choosing the OEM General Pump Y60100831 bayonet bolt protects your system's performance, safety, and uptime. It's a small component with an outsized impact - the difference between a pressure washer that holds steady and one that leaks pressure at the worst possible moment.

Keep at least one spare Y60100831 on hand so unexpected maintenance doesn't turn into extended downtime. Source the genuine part through your preferred General Pump distributor or service channel and get your VB75 unloader back to full operating condition.