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Type Y692 Low-Pressure Gas Blanketing Regulator

Figure 1.

 Type Y692 Low-Pressure Gas Blanketing Regulators

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Failure to follow these instructions or 

to properly install and maintain this 

equipment could result in an explosion, 

fire and/or chemical contamination 

causing property damage and personal 

injury or death.
Fisher™ regulators must be installed, 

operated and maintained in accordance 

with federal, state and local codes, rules 

and regulations and Emerson Process 

Management Regulator Technologies 

inc. (Emerson) instructions.
if the regulator vents gas or a leak 

develops in the system, service to the unit 

may be required. Failure to correct trouble 

could result in a hazardous condition.
installation, operation and maintenance 

procedures performed by unqualified 

personnel may result in improper 

adjustment and unsafe operation. Either 

condition may result in equipment 

damage or personal injury. Use qualified 

personnel when installing, operating and 

maintaining the Type Y692 Low-Pressure 

Gas Blanketing Regulator.

introduction

Scope of the Manual

This instruction manual provides installation, startup, 

maintenance and parts ordering information for the 

Type Y692 Low-Pressure Gas Blanketing Regulator.

Product Description

The Accu-Pressure™ Type Y692 Gas Blanketing 

Regulator (Figure 1) is a pressure reducing direct-

operated regulator with internal registration or external 

pressure registration. It is used for accurate pressure 

control on very low-pressure blanketing systems. 

Blanketing with low-pressure gas helps prevent 

corrosion, helps control emissions from the blanketed 

product and helps protect against any contamination to 

the blanketed product by atmospheric conditions.
The regulator will maintain a positive vessel 

pressure reducing the possibility of vessel 

wall collapse. The Type Y692 is available in 

NPS 1-1/2 and 2 / DN 40 and 50

 

body sizes.

Type Y692 with external pressure registration 

regulators have a stem seal with O-rings and a 

1/2 NPT control line connection in the diaphragm 

case. The control line can be used to more accurately 

control the pressure in the tank if the regulator is 

mounted an extended distance from the control point. 

The stem seal separates the body outlet pressure from 

the diaphragm case.

Instruction Manual

D102031X012
November 2016

Type Y692

Summary of Contents for Fisher Y692

Page 1: ...he Manual This instruction manual provides installation startup maintenance and parts ordering information for the Type Y692 Low Pressure Gas Blanketing Regulator Product Description The Accu Pressure Type Y692 Gas Blanketing Regulator Figure 1 is a pressure reducing direct operated regulator with internal registration or external pressure registration It is used for accurate pressure control on v...

Page 2: ...stallation with spring case pointing up will change outlet control pressure range to 7 5 in w c to 1 3 psig 19 to 90 mbar Table 1 Control Pressure Ranges Available Configurations Direct operated pressure reducing regulator with external or internal pressure registration with seven outlet control pressure ranges from 1 in w c to 7 psig 2 mbar to 0 48 bar Available in NPS 1 1 2 and 2 DN 40 and 50 bo...

Page 3: ...rd GAS BLANKETING PRESSURE Liquid INLET PRESSURE control PRESSURE ATMOSPHERIC PRESSURE INLET PRESSURE OUTLET PRESSURE ATMOSPHERIC PRESSURE Figure 3 Type Y692 with External Registration Operational Schematic block valve supply pressure vent valve vent valve vent pointed downward block valve Liquid gas blanketing pressure When the liquid level drops and vessel pressure decreases below the setting of...

Page 4: ...ction are shown in Figure 6 Warning If the regulator vents some gas or a leak develops in the system it indicates that service is required Failure to take the regulator out of service immediately may create a hazardous condition In hazardous or flammable gas service vented gas may accumulate and cause personal injury death or property damage due to fire or explosion Vent a regulator in hazardous g...

Page 5: ...ent valve in the control line All pressure between these block valves is released through the open vent valves since a gas blanketing regulator remains open in response to the decreasing downstream pressure If vent valves are not installed safely bleed off both inlet and outlet pressures and check that the regulator contains no pressure Maintenance Regulator parts are subject to normal wear and mu...

Page 6: ...crews key 21 and spring case key 23 3 In a regulator with a light control spring see Figure 4 Lift the upper spring seat key 44 lower spring seat key 4 and control spring key 1 off the diaphragm and plate assembly key 5 In a regulator with a heavy control spring see Figure 5 Lift the two spring seats key 4 and control spring key 1 off the diaphragm and plate assembly key 5 4 Remove the diaphragm a...

Page 7: ...ard MR0175 and or MR0103 Type Y692 Regulator Figure 6 Key Description Part Number Type Y692 Parts Kit For 1 4 3 8 and 1 2 in 6 4 9 5 and 13 mm Orifice Sizes includes keys 5 7 14 16 25 and 35 RY692X00012 For 3 4 1 and 1 3 16 in 19 25 and 30 mm Orifice Sizes includes keys 5 7 14 16 25 35 46 and 47 RY692X00022 1 Control Spring Plated steel See Table 1 2 Adjusting Screw See Table 4 3 Closing Cap See T...

Page 8: ...0825X0012 1 2 in 13 mm 0L0401X0012 3 4 in 19 mm 1A8323X0012 1 in 25 mm 1A8324X0012 1 3 16 in 30 mm 1C7834X0012 28 Body NPT Cast iron NPS 1 1 2 in DN 40 size 1B403619012 NPS 2 in DN 50 size 1B403719012 Key Description Part Number 28 Body continued Steel NPS 1 1 2 in DN 40 size 2L244522012 NPS 2 in DN 50 size 2L243322012 Stainless steel NPS 1 1 2 in DN 40 size 2L244533092 NPS 2 in DN 50 size 2L2433X...

Page 9: ...12 Aluminum 1A500528982 Plated steel 1A500528982 Plated steel 3 Closing Cap 1A589544022 Steel 1J8801X0022 Stainless steel 1H798714012 Brass 1J8801X0022 Stainless steel 4 Lower Spring Seat 14B4240X012 Aluminum 14B4240X012 Aluminum 1H7974X0012 Plated steel 1H7974X0012 Plated steel 29 Pipe Plug 1C333528992 Steel 1C3335X0012 Stainless steel 1C333528992 Steel 1C3335X0012 Stainless steel 30 Cap Screw 1B...

Page 10: ... Internal registration APPLY LUBricant SEALant ADHesive 43B0674 B TYPE ORIFICE SPRING RANGE DATE MFGD FISHER CONTROLS CO MARSHALLTOWN IOWA USA 21 22 44 35 30 23 74 47 29 50 51 13 20 11 19 17 16 14 25 27 46 28 6 5 4 3 2 1 7 8 9 10 Type Y692 ...

Page 11: ...n Figure 6 Type Y692 Regulator Assembly continued Section a a TYPE ORIFICE SPRING RANGE DATE MFGD FISHER CONTROLS CO MARSHALLTOWN IOWA USA 30 23 47 29 50 51 56 71 14 25 27 46 28 a a 21 22 20 13 19 16 35 30 23 15 47 14 28 25 27 46 17 11 6 5 4 3 2 1 7 9 8 11 Type Y692 ...

Page 12: ...arantees express or implied regarding the products or services described herein or their use or applicability All sales are governed by our terms and conditions which are available on request We reserve the right to modify or improve the designs or specifications of our products at any time without notice Emerson Process Management Regulator Technologies Inc does not assume responsibility for the ...

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