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Contents

Needle Control Valves Models 8503 & 8504

Installation and Operation Manual

X-VA-8503-eng

Part Number: 541B087AHG

March, 2008

Paragraph Page

Number Number

Introduction Section 1

1-1 Description .....................................................................................................................................1-1

1-2 Specifications.................................................................................................................................. 1-1

Installation Section 2

2-1 General ........................................................................................................................................... 2-1

2-2 Receipt of Equipment ...................................................................................................................... 2-1

2-3 Recommended Storage Practice ..................................................................................................... 2-1

2-4 Return Shipment ............................................................................................................................. 2-2

2-5 Transit Precautions ......................................................................................................................... 2-2

2-6 Removal from Storage ..................................................................................................................... 2-2

2-7 Installation ...................................................................................................................................... 2-2

2-8 Panel Mounting NRS Valve.............................................................................................................. 2-3

2-9 Panel Mounting NRS Valve with Digital Handle ................................................................................ 2-4

Operation Section 3

3-1 Operating Precaution ...................................................................................................................... 3-1

3-2 General ........................................................................................................................................... 3-1

Maintenance Section 4

4-1 Maintenance ................................................................................................................................... 4-1

Warranty, Local Sales/Service Contact Information ....................................................................... Back Cover

FIGURES

Figure Page

Number Number

1-1 Dimensions, Models 8503 & 8504 ................................................................................................... 1-3

1-2 Exploded View NRS Valve............................................................................................................... 1-3

1-3 Numerical Handle and NRS Needle Valve ........................................................................................ 1-3

2-1 Panel Mounting Drawing.................................................................................................................. 2-3