GRACO 172193 - Regulator Diaphragm (Low‑Pressure Fluid Regulators)

Compatible Equipment

• 204500 - Low Pressure Fluid Regulator, 250 PSI Max
• 203831 - Low Pressure Fluid Regulator, 250 PSI Max
• 204501 - Low Pressure Fluid Regulator, 20-160 psi, 3 GPM, AL, Spring Type, 3/8 (F) x 3/8 (M), 1/4 (F) Port
• 205425 - Low Pressure Fluid Regulator, 250 Max psi, 0-60 psi Regulated Pressure, 3.0 GPM, AL, Spring Type, 3/8 (F) x 3/8 (m), 1/4 (F) Port
• 206019 - Low Pressure Fluid Back Pressure Regulator, 180 PSI max pressure, AL wetted parts, manual, 1"(f) inlet, 1"(f) outlet w/ gauge, Series F
• 208997 - Back Pressure Regulator, Low Pressure Corrosion Resistant, 200 Max psi, SST, Manual, 1-1/4 (f) x 1-1/4 (f), w/ Gauge, Series E

Related Parts

• 171912 - Cellulose Fiber Gasket
• 171913 - Cellulose Fiber Gasket
• 165750 - Fluid Regulator Housing
• 160033 - Guide, Spring
• 160034 - Spring, Helical Compression (Model 204501 Only)
• 188006 - SEAT, stainless steel
• 188512 - RETAINER, diaphragm, stainless steel
• 164864 - PLATE, diaphragm
• 160791 - NUT, diaphragm

Reference number 31 in the parts diagram. Related to other gasket/diaphragm parts 171912 (GASKET, cellulose fiber) and 171913 (GASKET, cellulose fiber) Reference number 11† in the diagram. Included in Repair Kit 210754. Torque specifications on this model: 120-130 in-lb (13.6-14.7 N•m) for main assembly, 12-15 ft-lb (16-20 N•m) for secondary connections. Reference number 12 in parts list. Keep on hand to reduce down time according to note for items 8, 10, 12, 14, 17, and 18.

Reference Manuals

• 306563 (Page 11) Low Pressure Fluid Regulators
• 306770 (Page 6) Back Pressure Valve
• 307107 (Page 6) Stainless Steel, Waterbase Compatible, Back Pressure Valve
• 310537 (Page 5) Back Pressure Valve
• 3A7527 (Page 10) Low Shear Back Pressure Regulator