Graco Inc.

Low Pressure Regulators  Low Pressure Fluid Regulators

Manual and air-operated fluid regulators for a balanced fluid system

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For a balanced fluid system, pressure control is essential. Graco provides a wide selection of fluid pressure regulators. Together, these controls keep your system functioning more productively by providing rugged, precise pressure regulation.

Low Pressure Corrosion Resistant Fluid Pressure Regulator 

  • Stainless steel wetted materials are compatible with catalyst and waterborne materials 
  • Manual or air operated 
  • Low-shear model (222115) 
  • Tungsten and Carbide materials to resist wear 
  • PTFE/Elastomer hybrid diaphragm withstands wear and maintains responsiveness
  • 3/8”(f) inlet and outlet 
Low Pressure Composite Pressure Regulator 
  • Acetal Composite Material 
  • Compatible with waterborne materials 
  • Manual or air operated 
  • SST seat and carbide ball 
  • PTFE diaphragm 
  • Low pressure only 
  • 1/4”(f) inlet and outlet 

Fluid Pressure Regulators
U.S.
Metric
Maximum fluid inlet pressure
100 psi
0.7 MPa, 7 bar
Maximum fluid operating temperature
150° F
66° C
Regulated fluid pressure range
Models 236081, 236449, 241976
3 to 30 psi
.02 to 0.2 MPa, 0.2 to 2.1 bar
Models 236216 and 236450
20 to 100 psi
.14 to 0.7 MPa, 1.4 to 7.0 bar
Models 236281, 238159
3 to 100 psi
.02 to 0.7 MPa, 0.2 to 7 bar
Maximum flow capacity
0.5 gpm with 70 cps fluid at 100 psi inbound pressure
1.9 lpm with 70 cps fluid at 0.7 MPa, 7 bar inbound pressure
Wetted Parts
acetal resins, PTFE, tungsten carbide, 304 and 316 series stainless steel, 17−4 PH stainless steel
acetal resins, PTFE, tungsten carbide, 304 and 316 series stainless steel, 17−4 PH stainless steel
Weight
Model 236081
1.2 lb.
0.54 kg
Model 236216
1.28 lb.
0.58 kg
Model 236281
1.6 lb.
0.73 kg
Model 236449
1.5 lb.
0.68 kg
Model 236450
1.6 lb.
0.73 kg
Model 238159
1.39 lb.
0.63 kg
Model 241976
1.5 lb.
0.68 kg



Low Pressure Fluid Regulator
U.S.
Metric
Maximum Fluid Inlet Pressure (Fluid Pressure Regulators)
233757, 233773, 233774, 233809, 234256, 234263, 234272, 234273, 24Z112: 580 psi
233757, 233773, 233774, 233809, 234256, 234263, 234272, 234273, 24Z112: 4000 kPa, 40 bar
233759, 234267: 1015 psi
233759, 234267: 7000 kPa, 70 bar
233759, 234267: 7000 kPa, 70 bar
Maximum Permanent Supply Pressure (Back Pressure Regulators)
233758, 233810, 234257, 234262: 145 psi
233758, 233810, 234257, 234262: 1000 kPa, 10 bar
233811, 233950, 234255, 234261: 290 psi
233811, 233950, 234255, 234261: 2000 kPa, 20 bar
233811, 233950, 234255, 234261: 2000 kPa, 20 bar
233812, 234258: 725 psi
233812, 234258: 5000 kPa, 50 bar
233812, 234258: 5000 kPa, 50 bar
Pressure Range
233773, 233809, 234272, 234256: 6-145 psi
233773, 233809, 234272, 234256: 40-1000 kPa, 0.4-10 bar
233758, 233774, 233810, 234257, 234262, 234273 : 15-145 psi
233758, 233774, 233810, 23425 , 234262, 234273 : 100-1000 kPa, 1-10 bar
233758, 233774, 233810, 23425 , 234262, 234273 : 100-1000 kPa, 1-10 bar
233757, 234263: 15-290 psi
233757, 234263: 100-2000 kPa, 1-20 bar
233757, 234263: 100-2000 kPa, 1-20 bar
24Z112: 15–290 psi. Preset to 185 psi.
24Z112: 100–2000 kPa, 1–20 bar. Preset to 1275 kPa, 13 bar.
24Z112: 100–2000 kPa, 1–20 bar. Preset to 1275 kPa, 13 bar.
233811, 233950, 234255, 234261: 29-290 psi
233811, 233950, 234255, 234261: 200-2000 kPa, 2-20 bar
233811, 233950, 234255, 234261: 200-2000 kPa, 2-20 bar
233812, 234258: 73-725 psi
233812, 234258: 500-5000 kPa, 5-50 bar
233812, 234258: 500-5000 kPa, 5-50 bar
233759, 234267: 145-725 psi
233759, 234267: 1000-5000 kPa, 10-50 bar
233759, 234267: 1000-5000 kPa, 10-50 bar
Maximum Operating Air Pressure (Pneumatic Regulators Only)
145 psi
1 MPa, 10 bar
Maximum Flow Rate
See chart on page 21, manual 309474.
See chart on page 21, manual 309474.
Temperature Range
233757, 233758, 233759, 233773, 233774, 233809, 233810, 233811, 233950, 234255, 234256, 234261, 234262, 234263, 234273, 24Z112: 32-194°F
233757, 233758, 233759, 233773, 233774, 233809, 233810, 233811, 233950, 234255, 234256, 234261, 234262, 234263, 234273, 24Z112: 0-90°C
233812, 234258: 50-176°F
233812, 234258: 10-80°C
Fluid inlet and outlet
233757, 233758, 233759, 233773, 233774,233809, 233810, 233812, 233950: 3/8 in. BSPP(F)
233757, 233758, 233759, 233773, 233774,233809, 233810, 233812, 233950: 3/8 in. BSPP(F)
234256, 234257, 234258, 234261,234262, 234263, 234267, 234272, 234273, 24Z112: 3/8 in. npt(f )
233811: 1 in. BSPP(F)
234255: 1 in. npt(f)
Air inlet
233773, 233809, 233810: 1/4 in. BSPP(F)
233773, 233809, 233810: 1/4 in. BSPP(F)
234256, 234257, 234272: 1/4 in. npt(m)
*Gauge port
1/8 in. BSPP(F)
1/8 in. BSPP(F)
Wetted Parts
Stainless steel, tungsten carbide, PTFE, chemically resistant fluoroelastomer, PEEK (233809 and 234256 only)
Stainless steel, tungsten carbide, PTFE, chemically resistant fluoroelastomer, PEEK (233809 and 234256 only)
* Accessory gauges available.