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Instruction Manual
December 2013
T208Vr Series Tank Blanketing Vacuum regulator

Table of Contents

Introduction .................................................................. 1
Specifications .............................................................. 2
Principle of Operation .................................................. 2
Installation ................................................................... 4
Startup, Adjustment and Shutdown ............................. 5
Maintenance ................................................................ 5
Parts Ordering ............................................................. 9
Parts List...................................................................... 9

introduction

Scope of the Manual
This Instruction Manual provides instruction for
installation, startup, maintenance and parts list for the
T208VR Series tank blanketing vacuum regulator.
Instructions and parts lists for other equipment used
with these regulators are found in separate manuals.
Product Description
The T208VR Series vacuum regulators are used
for precise control of small capacity, low-pressure
service applications where a constant vacuum must be
maintained. These direct-operated vacuum regulators
come in 3/4 and 1-inch / DN 20 and 25 body sizes and
have a 7/16-inch / 11 mm orifi ce and a 1/4-inch spring
case vent connection with optional umbrella vent
assembly. The individual products are described
as follows:
Type T208VR
The Type T208VR is a vacuum regulator with internal
pressure registration requiring no control line.
Type T208VRM
The Type T208VRM has a control line connection and
blocked throat for external pressure registration.
www.fisherregulators.com
T208VR Series
Figure 1. Type T208VR Vacuum Regulator

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Summary of Contents for Emerson FISHER T208VR Series

  • Page 1: Table Of Contents

    T208VR Series Instruction Manual December 2013 T208Vr Series Tank Blanketing Vacuum regulator Table of Contents Introduction ..............1 Specifications .............. 2 Principle of Operation ..........2 Installation ..............4 Startup, Adjustment and Shutdown ......5 Maintenance ..............5 Parts Ordering ............. 9 Parts List..............
  • Page 2: Specifications

    A decrease in this vacuum (increase and Emerson Process Management in absolute pressure) beyond this value registers on regulator Technologies, inc. (regulator the diaphragm and opens the disk. This permits a Technologies) instructions.
  • Page 3 T208VR Series aDJUSTing nUT VACUUM BEING COnTrOL SPring CONTROLLED VEnT STEM VaLVE PLUg DiSK OriFiCE DiaPHragM PiPE PLUg PUSHEr POST LEVEr VACUUM HIGHER VACUUM SOURCE PUMP inLET PrESSUrE (COnTrOLLED VaCUUM) OUTLET PrESSUrE (HigHEr VaCUUM SOUrCE) aTMOSPHEriC PrESSUrE TYPE T208Vr WiTH inTErnaL PrESSUrE rEgiSTraTiOn aDJUSTing nUT COnTrOL SPring VEnT...
  • Page 4: Installation

    T208VR Series installation property damage due to fire or explosion. Vent equipment in hazardous gas service to a remote, safe location away from air Warning intakes or any hazardous area. The vent line or stack opening must be protected against condensation or clogging. Personal injury, property damage, equipment damage or leakage due to 2.
  • Page 5: Startup, Adjustment And Shutdown

    T208VR Series Table 1. Vacuum Control Pressure Ranges CHangE in MaXiMUM MaXiMUM VaCUUM COnTrOL SPring WirE SPring FrEE BaCK DiSK COnTrOL PrESSUrE inLET OUTLET PrESSUrE rangE SPring ParT SPring DiaMETEr LEngTH SPring ParT TO WiDE-OPEn VaCUUM VaCUUM nUMBEr COLOr nUMBEr psig / bar psig / bar Inch / mm...
  • Page 6 T208VR Series 3. To inspect the orifice (key 5) on Types T208VR Warning and T208VRM or throat seal O-ring (key 31) and machine screw (key 34) on the Type T208VRM, To avoid personal injury, property remove the cap screws (key 2) and separate the damage or equipment damage caused by lower casing (key 4) from the body (key 1).
  • Page 7 T208VR Series Type T208VR Vacuum Regulator 11. Install the upper spring seat (key 19) and the adjusting nut (key 20). Turn the adjusting nut Key numbers are referenced in Figure 3. clockwise until there is enough control spring (key 6) force to provide proper slack to the 1.
  • Page 8 T208VR Series Table 2. Body Part Numbers (Key 1) ParT nUMBEr BODY MaTEriaL EnD COnnECTiOn STYLE 3/4-Inch / DN 20 Body 1-Inch / DN 25 Body Gray cast iron ERSA03695A0 ERSA03697A0 NPT (standard) ERSA00231A0 ERSA00764A0 316L/316 Stainless steel CL150 RF ERSA01470A6 ERSA01470A7 1.
  • Page 9: Parts Ordering

    T208VR Series Parts Ordering When corresponding with the local Sales Office or stamped on the nameplate. Specify the eleven- Sales Representative about this regulator, include character part number when ordering new parts from the type number and all other pertinent information the following parts list.
  • Page 10 T208VR Series ERSA02741 □ aPPLY LUBriCanT L1 = SiLiCOnE grEaSE L2 = anTi-SEiZE COMPOUnD 1. Lubricants must be selected such that they meet the temperature requirements. Figure 3. Type T208VR (Internal Registration) Assembly...
  • Page 11 T208VR Series 18 31 ERSA02742 □ aPPLY LUBriCanT L1 = SiLiCOnE grEaSE L2 = anTi-SEiZE COMPOUnD 1. Lubricants must be selected such that they meet the temperature requirements. Figure 4. Type T208VRM (External Registration) Assembly...
  • Page 12 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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