Installation

Changing the Orientation of the Fluid Inlet and Outlet Ports

The pump is shipped with the fluid inlet (R) and outlet

(S)ports facing the same direction. See Fig. 4. To change the orientation of the inlet and/or outlet port:

1.Remove the screws and washers (106, 112, 113 and 114) holding the inlet (102) and/or outlet (103) manifold to the covers (101).

2.Reverse the manifold and reattach. Install the screws and washers and torque to 150–160 in–lb (17–18 NSm). See Torque Sequence, page 32.

Fluid Pressure Relief Valve

CAUTION

Some systems may require installation of a pres- sure relief valve at the pump outlet to prevent overpressurization and rupture of the pump or hose. See Fig. 5.

Thermal expansion of fluid in the outlet line can cause overpressurization. This can occur when using long fluid lines exposed to sunlight or ambi- ent heat, or when pumping from a cool to a warm area (for example, from an underground tank).

KEY

N1/2 npt(f) air inlet port P Muffler

Air exhaust port is 3/4 npt(f) .

R 2” fluid inlet flange S 2” fluid outlet flange

1Torque to 150–160 in–lb (17–18 NSm). See Torque

Sequence, page 32.

N

P

102

Fig. 4

101Fluid covers

102Fluid inlet manifold

103Fluid outlet manifold

106Fluid outlet manifold screws (top)

112Fluid inlet manifold screws (bottom)

113Fluid outlet manifold washer

114Fluid inlet manifold washer

103 106 1

113 S

101

R

114

112 1

04613B

Overpressurization can also occur if the Husky pump is being used to feed fluid to a piston pump, and the intake valve of the piston pump does not close, causing fluid to back up in the outlet line.

KEY

R2” fluid inlet flange

S2” fluid outlet flange

VPressure relief valve

Part No. 112119 (stainless steel)

1Install valve between fluid inlet and outlet ports.

2Connect fluid inlet line here.

3Connect fluid outlet line here.

S 3

V 1

2

R

 

04616B

Fig. 5

 

 

 

 

 

10 308550

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Graco 308550ZAC Changing the Orientation of the Fluid Inlet and Outlet Ports, Fluid Pressure Relief Valve
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308550ZAC specifications

The Graco 308550ZAC is a versatile and efficient airless paint sprayer designed for both DIY enthusiasts and professional contractors. Known for its reliability and performance, this unit provides consumers with a powerful solution for their painting projects, ensuring a smooth and even finish.

One of the standout features of the Graco 308550ZAC is its ProXChange technology. This innovative system allows for quick and easy pump replacement without the need for additional tools or complex procedures. This feature ensures minimal downtime, making it especially valuable on job sites where time efficiency is crucial.

The sprayer is also equipped with a powerful electric motor that delivers a consistent pressure of up to 3000 PSI. This high pressure not only facilitates a fine atomization of paint but also enables users to work with a variety of coatings, including thicker materials like latex, stains, and sealers. As a result, users can achieve professional-grade finishes on a range of surfaces, from buildings to fences.

Another significant characteristic of the Graco 308550ZAC is its adjustable pressure control. This feature allows operators to fine-tune the pressure according to the specific paint being used and the project's requirements. This flexibility translates to improved control over the spraying process, minimizing overspray and ensuring precision, particularly when working on detailed areas.

Additionally, the unit comes with a built-in suction hose, which can be submerged directly into paint containers for efficient and seamless painting. This capability makes it easier to use large buckets, reducing the hassle of constantly refilling the sprayer and enhancing productivity.

The Graco 308550ZAC also features a lightweight and portable design, making it easier to transport between job sites. Its robust construction ensures durability, while the ergonomic handle offers comfort during extended use.

In summary, the Graco 308550ZAC is a robust airless paint sprayer that combines advanced technologies and thoughtful design features to meet the needs of both professionals and hobbyists. With its ProXChange system, adjustable pressure control, and high-performance motor, it represents an excellent choice for achieving flawless finishes in various painting applications.
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