Emerson Y696 Instruction Manual
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Emerson Y696 Instruction Manual

Emerson Y696 Instruction Manual

Vapor recovery regulator
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Instruction Manual
Form 5312
February 2016
Type Y696 Vapor Recovery Regulator
W5996
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
Figure 1. Type Y696 Vapor Recovery Regulator
increase in vessel pressure and vent excessive
internal vessel pressure to an appropriate vapor
recovery disposal or reclamations system.
Principle of Operation
The Type Y696 is used to maintain a constant inlet
(blanket) pressure with the outlet flowing 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
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Type Y696

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Summary of Contents for Emerson Y696

  • Page 1 Principle of Operation maintenance and parts information for the Type Y696 vapor recovery regulator. The Type Y696 is used to maintain a constant inlet (blanket) pressure with the outlet flowing to a system Product Description whose pressure is lower than that at the inlet.

  • Page 2: Specifications

    1. End connections for other than U.S. standard can usually be provided, consult your local Sales Office. 2. The pressure/temperature limits in this Instruction Manual or any applicable standard limitation should not be exceeded. VAPOR RecOVeRY VAcuuM SOuRce M1058 VAPOR PReSSuRe InleT PReSSuRe OuTleT PReSSuRe ATMOSPheRIc PReSSuRe lIquID Figure 2. Type Y696 Vapor Recovery Operational Schematic...

  • Page 3: Installation

    Type Y696 Table 1. Body Sizes and End Connection Styles BODY SIze BODY MATeRIAl cast Iron Steel Stainless Steel hastelloy ® NPT, SWE, CL150 RF, NPT, SWE, CL150 RF, 1-1/2 and 2 40 and 50 CL150 RF CL300 RF, PN 16/25/40 CL300 RF, PN 16/25/40 Table 2.

  • Page 4: Startup And Adjustment

    Due to the care Emerson™ takes in parts or explosion of accumulated meeting all manufacturing requirements (heat treating, gas, never adjust the control spring to dimensional tolerances, etc.), use only replacement...
  • Page 5 Type Y696 1. To inspect and replace the disk assembly (key 25) To Change the Control Spring: or orifice (key 27), remove the body cap assembly 1. Remove the closing cap (key 3) and turn the (key 38). adjusting screw (key 2) counterclockwise until all 2.

  • Page 6: Parts Ordering

    • Diaphragm and plate assembly (key 5) pattern and MR0103. side up • Control spring seat (key 4) Type Y696 Regulator (Figure 3) 11. Insert and tighten the diaphragm cap screw Description Part number (key 30) to secure the diaphragm parts to the pusher post (key 8).
  • Page 7 Type Y696 SecTIOn A-A 43B0679 Figure 3. Type Y696 Assembly...
  • Page 8 For further information visit www.fisherregulators.com The Emerson logo is a trademark and service mark of Emerson Electric Co. All other marks are the property of their prospective owners. Fisher is a mark owned by Fisher Controls International LLC, a business of Emerson Process Management.

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