Coupling Block, Manual Valves | Graco Inc GX-7 400, 311321H, GX-7 DI

Coupling Block

Chemical hoses are joined to gun block by coupling block to ease installation and removal of gun.

Manual Valves

Two manual valves located on coupling block control flow of each chemical component to gun.

Triggering gun with manual valves closed

may cause crossover if any residual chem- ical remains in gun ports.

Never open manual valve unless coupling block is secured to gun or unless you point gun into waste container.

Open Manual Valves

Use 5/16 in. nut driver to turn manual valve counterclockwise three full turns.

Coupling

Block

Manual Valves

FIG. 14: Open Manual Valves

Operation Basics

Close Manual Valves

Use 5/16 in. nut driver to turn manual valve fully clockwise.

CAUTION

To prevent accidental gun operation, always set safety stop to CLOSED (SERVICE), close both manual valves, and disconnect air supply.

Installation and Removal

To prevent release of pressurized chemicals, close both manual valves before removing coupling block.

Install Coupling Block

1.Replace nicked, damaged, or worn cou- pling block gaskets.

2.With gaskets in place, fit coupling block to gun block.

311321H

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Image 13

Graco Inc GX-7 400, 311321H, GX-7 DI, GX-7A Coupling Block, Manual Valves, Installation and Removal

Contents

311321H Important Safety InstructionsGX-7 Models Contents Personal Protective Equipment Fire and Explosion Hazard Pressurized Aluminum Parts Hazard Model GX-7A Overall ViewModel GX-7 DI Locknut Model GX-7Valving Rod Rear Stop Gun Block Air Cap Valve Trigger GX-7A Centerline Components Centerline Components GX-7 400 Centerline Components GX-7A Mixing Module Mixing Module Operation Basics Safety PositionIsocyanate Hazard Keep a and B Components Separate Air Hose Connection Disengage Safety StopConnect Air Hoses Disconnect Air Hoses Coupling Block Installation and RemovalManual Valves Optional Configuration Air Inlet ConfigurationRemove Coupling Block Do not Overtighten Mixing Module and PCD Installation GX-7A and GX-7 400 Models Only Valving Rod AdjustmentGX-7 DI Model Only Initial Set Up Daily Shutdown Daily Start-up Trigger Gun Pressure Relief Procedure Gun Service Kits MaintenanceClean Spray Gun Procedure Flush Gun Repair Service Screen ScrewRemove Centerline Components Remove valving rod. Rod Draw Bar Valving Rod Install Centerline Components GX-7 DI Shown Replace End Cap and Air Piston Assembly Replace Trigger Valve O-Ring Replace Trigger Valve O-Rings Unthread Cap from PCD Body Clean Mixing Module Install Mixing Module Install Mixing Module GX-7A Model Shown Clean Pattern Control Disc Parts GX-7A Model Final Assembly No. Part No. Description GX-7A Model Final AssemblyModule see GX-7A Mix Mod GX-7 DI Model Final Assembly Module see GX-7 DI Model Specifications , GX-7 DI Model Final AssemblyNo. Part No. Description Qty GX-7 400 Model Final Assembly Module Kit , GX-7 400 Model Final Assembly GX-7A Model Handle Assembly Description GX-7 Model Handle Assembly GX-7 DI Model Handle Assembly Description Qty GX-7 DI Model Handle Assembly GX-7 400 Model Handle Assembly GX-7 400 Model Handle Assembly All models Coupling Block Assembly GX-7A Mix Module Kit Specifications Tip Set-Up Chart for GX-7A Model GX-7 400 Mix Module Kit Module Kits Cleanout Drill Iso PortQuantity In/mm Module Only Size Ref Tip Kits for GX-7 400 Gun No. Ref Quantity Set-up Chart for GX-7 400 Model Module/Tip Data for Chemical Sprayed at 2500 PSI Output GX-7 DI Model SpecificationsPattern Lbs/min Round Spray Pattern Tool Kits Tip KitsFor GX-7A and GX-7 DI Models Round Tip Kits Size Quantity Category Data Technical Data Graco Standard Warranty