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Exploded parts diagram · 5 parts

GPX 80 PRIME/SPRAY Valve Assembly

Genuine Titan OEM parts for GPX 80 PRIME/SPRAY Valve Assembly, matched to the official factory parts diagram. Search a part number, or call us and we'll confirm the fit before you order.

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GPX 80 PRIME/SPRAY Valve Assembly
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2
Item
Titan 0507745 bypass valve gasket (can be ordered as 700-537)
Titan 0507745 bypass valve gasket (can be ordered as 700-537)
Part #: 507745
UPC: 612564168586
Titan 0507745 bypass valve gasket or gasket, bypass valve is replaced by Titan 700-537   Fits: GP...
$3.33
QTY:
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6
Item
Titan 800-910 Bypass Valve Seat
Titan 800-910 Bypass Valve Seat
Part #: 800-910
UPC: 612564166568
OEM Titan Fluid Section Component Titan 800-910 Bypass Valve Seat is a genuine OEM precision se...
$15.10
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6
Genuine OEM
Titan
Titan 800-910 Bypass Valve Seat
Part #: 800-910
$15.10
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8
Item
Titan 700-721 O-Ring
Titan 700-721 O-Ring
Part #: 700-721
UPC: 612560069122
OEM Titan Sealing Component Titan 700-721 O-Ring is a genuine OEM Viton stem O-ring used in the...
$2.50
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8
Titan 700-721 O-Ring Genuine OEM
Titan
Titan 700-721 O-Ring
Part #: 700-721
$2.50
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11
Item
Titan 0507735 Bypass Cam Base (can be ordered as Titan 700-251)
Titan 0507735 Bypass Cam Base (can be ordered as Titan 700-251)
Part #: 0507735
UPC: 612564167763
Titan 0507735 Bypass Cam Base is replaced by Titan 700-251
$3.78
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13
Item
Titan 0507662 Relief Valve Knob
Titan 0507662 Relief Valve Knob
Part #: 0507662
UPC: 612564168128
OEM Titan PRIME/SPRAY Valve Control Titan 0507662 Relief Valve Knob is the external operating h...
$18.10
QTY:
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13
Titan 0507662 Relief Valve Knob Genuine OEM
Titan
Titan 0507662 Relief Valve Knob
Part #: 0507662
$18.10
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Buying guide

GPX 80 PRIME/SPRAY Valve Assembly: what to know before you buy

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.

Not sure it fits?

Send us your model and serial number — we’ll confirm the exact part number before you pay.

713-931-0006

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