GPX 80 PRIME/SPRAY Valve Assembly

Titan 0507745 bypass valve gasket (can be ordered as 700-537)

Item No: 2

Part #: 507745

Titan 0507745 bypass valve gasket or gasket, bypass valve is replaced by Titan 700-537 Fits: GP...

$3.33

Discontinued by Manufacturer

Titan 800-910 Bypass Valve Seat

Item No: 6

Part #: 800-910

Titan part 800-910 is a bypass valve seat used in the pump fluid section of compatible...

$15.10

QTY:

Titan 700-721 O-Ring

Item No: 8

Part #: 700-721

700-721 is a replacement O-ring used in various Titan airless sprayer models to seal f...

$2.50

QTY:

Titan 0507735 Bypass Cam Base (can be ordered as Titan 700-251)

Item No: 11

Part #: 0507735

Titan 0507735 Bypass Cam Base is replaced by Titan 700-251

$3.78

Discontinued by Manufacturer

Titan 0507662 Relief Valve Knob

Item No: 13

Part #: 0507662

Titan 0507662 Relief Valve Knob – Essential Component for Pressure Regulation ...

$18.10

QTY:

Buy GPX 80 PRIME/SPRAY Valve Assembly OEM Replacement Parts Online

The GPX 80 PRIME/SPRAY Valve Assembly controls the flow direction of coating material inside the Titan GPX 80 gas airless sprayer. This assembly allows the operator to switch between PRIME mode, which circulates material for startup and pressure relief, and SPRAY mode, which directs pressurized coating material to the spray hose and gun. Proper valve operation is essential for maintaining stable pressure, smooth priming, and reliable spray performance during heavy-duty airless spraying applications.

The valve assembly contains several precision sealing and pressure-control components that help regulate fluid movement under high pressure. Common OEM parts associated with this assembly include the Titan 700-537 Bypass Valve Gasket, Titan 800-910 Bypass Valve Seat, Titan 700-721 O-Ring, Titan 0507735 Bypass Cam Base, and Titan 0507662 Relief Valve Knob. These components work together to maintain leak-free switching between prime and spray functions while protecting the system from pressure instability.

FAQs

A stiff valve usually indicates dried coating buildup around the cam base or internal stem assembly. Debris accumulation inside the valve housing can restrict smooth movement between PRIME and SPRAY positions.

This often happens when the bypass valve seat or internal O-rings fail to seal correctly. Worn valve seats can allow material to bypass internally instead of building spray pressure.

Loss of prime commonly occurs when internal valve seals or the bypass gasket develop wear, allowing pressure to bleed back into the return line after shutdown.

A worn bypass cam base may prevent the valve from fully engaging either PRIME or SPRAY mode, causing unstable pressure transition and inconsistent fluid flow through the system.

Leaks around the relief valve knob are typically caused by damaged O-rings, worn stem seals, or internal pressure wear inside the valve housing assembly. Replacing worn sealing components restores proper pressure containment.

GPX 80 PRIME/SPRAY Valve Assembly

Buy GPX 80 PRIME/SPRAY Valve Assembly OEM Replacement Parts Online

FAQs

1. Why does the GPX 80 PRIME/SPRAY Valve feel stiff when switching modes?

2. What causes paint to continuously return to the siphon tube in SPRAY mode?

3. Why does the GPX 80 lose prime after sitting idle for a short time?

4. What happens if the Titan 0507735 Bypass Cam Base becomes worn?

5. Why does the GPX 80 PRIME/SPRAY Valve leak around the knob area?