Emerson Y696 Instruction Manual download pdf

Type Y696

D101770X012

Instruction Manual

Form 5312

January 2009

www.emersonprocess.com/regulators

Type Y696 Vapor Recovery Regulator

Introduction

Scope of Manual

This instruction manual includes installation, startup,

maintenance, and parts information for the Type Y696

vapor recovery regulator.

Product Description

The Type Y696 vapor recovery regulator is a direct-

operated regulator with internal registration requiring

no downstream control line. It is used to sense

increase in vessel pressure and vent excessive

internal vessel pressure to an appropriate vapor

recovery disposal or reclamations system.

Specications

The Specications section lists maximum pressures,

temperatures, and other specications. Specications

for a given regulator as it originally comes from the

factory are stamped on the spring case nameplate.

Principle of Operation

The Type Y696 is used to maintain a constant inlet

(blanket) pressure with the outlet owing to a system

whose pressure is lower than that at the inlet.

When vessel pressure increases above the setpoint

of the regulator due to pumping in or thermal heating,

the force of the control spring is overcome by

Figure 1. Type Y696 Vapor Recovery Regulator

W5996

1 2 3 4 5 6 7 8

Type Y696 1

Summary of Contents

Page 1 - Type Y696

Type Y696D101770X012Instruction ManualForm 5312January 2009www.emersonprocess.com/regulatorsType Y696 Vapor Recovery RegulatorIntroductionScope of Man

Page 2

Type Y69621. The pressure/temperature limits in this instruction manual or any applicable standard limitation should not be exceeded.M1058INLET PRES

Page 3

Type Y6963Table 1. Body Sizes and End Connection StylesBODY SIZE, INCHES (DN)BODY MATERIALCast Iron Steel Stainless Steel Hastelloy® C1-1/2 and 2 (4

Page 4

Type Y6964 4. To remotely vent the regulator, remove the vent (key 56) and install obstruction-free tubing or piping into the 1/4-inch

Page 5

Type Y6965 1. To inspect and replace the disk assembly (key 25) or orice (key 27), remove the body cap assembly (key 38). 2. Remov

Page 6

Type Y6966*Recommended spare part. 10. Install the parts on the pusher post in the order listed below: • Diaphragm plate gasket (k

Page 7

Type Y6967Figure 3. Type Y696 AssemblySECTION A-A43B06792950515675212267892013111917162827474614414052443235130232538AA

Page 8

Type Y696The Emerson logo is a trademark and service mark of Emerson Electric Co. All other marks are the property of their prospective owners. Fisher