Graco 238890, 238892, 238894 important safety instructions Technical Data

Technical Data

	Model 238890	Model 238892	Models 238894,	Model 244734
	spring operated, with	spring operated, with	248090, and 255072	air operated, with
	fluid pressure gauge	fluid pressure gauge	air operated, with	pressure sensor
	Model 238889	Model 238891	fluid pressure gauge	ports
			Model 238893
	spring operated, with	spring operated, with
	EZ Flush plug	EZ Flush plug	air operated, with EZ
			Flush plug
Maximum fluid	6000 psi	6000 psi	6000 psi	6000 psi
inlet pressure	(41 MPa, 414 bar)	(41 MPa, 414 bar)	(41 MPa, 414 bar)	(41 MPa, 414 bar)
Regulated fluid	500–3000 psi	3000–5000 psi	500–4000 psi	500–4000 psi
outlet pressure	(3.4–21 MPa,	(21–34 MPa,	(3.4–28 MPa,	(3.4–28 MPa,
range	34–207 bar)	207–345 bar)	34–276 bar)	34–276 bar)
Maximum inbound	––	––	100 psi	100 psi
air pressure			(0.7 MPa, 7 bar)	(0.7 MPa, 7 bar)
Fluid inlet/outlet	3/8 npt(f)	3/8 npt(f)	3/8 npt(f)	1/2 npt(f)
size			1/2 npt(f) for 248090
Gauge port size	1/4 npt(f)	1/4 npt(f)	1/4 npt(f)	1/4 npt(f)
Fluid pressure	0–3000 psi	0–5000 psi	0–5000 psi	––
gauge (Models	(0–21 MPa,	(0–34 MPa,	(0–34 MPa,
238890, 238892,	0–207 bar)	0–345 bar)	0–345 bar)
and 238894)
Maximum flow	2 gpm (7.6 lpm)	2 gpm (7.6 lpm)	2 gpm (7.6 lpm)	2 gpm (7.6 lpm)
(in 65 cp material)
Maximum fluid	up to 15,000 cp	up to 15,000 cp	up to 15,000 cp	up to 15,000 cp
viscosity
Maximum operat-	120_ F (50_ C)	120_ F (50_ C)	120_ F (50_ C)	120_ F (50_ C)
ing temperature
Weight (with gauge)	7.0 lb (3.2 kg)	7.0 lb (3.2 kg)	11.7 lb (5.3 kg)	11.7 lb (5.3 kg)
Fluid diaphragms	PTFE with TPE	PTFE with TPE	PTFE with TPE	PTFE with TPE
	backing	backing	backing	backing
Wetted parts (all	304, 316, 17–4 passivated SST, nickel– and cobalt–bound tungsten carbide, PTFE for all
models)	models; ceramic for model 248090, 244734, and 255072 only.
Adjustment tool	6 mm hex wrench	6 mm hex wrench	––	––
(spring-operated
models)

Air Requirements for Air-Operated Regulators (Models 238893, 238894, 248090, and 255072)

The following table shows the approximate air pressure needed to regulate the air-operated regulator to a given fluid outlet pressure.

						Regulated Fluid Outlet Pressure
				Models 238894, 248090,
	Air Pressure				and 255072				Model 255072
psi		MPa	bar	psi		MPa	bar	psi		MPa	bar

28

49

70

90

100

0.19

0.34

0.48

0.62

0.68

1.9

3.4

4.8

6.2

6.8

1000

2000

3000

4000

4000

7

14

21

28

28

69

138

207

276

276

550

1150

1800

2450

2700

4

8

12

17

19

40

80

120

170

190

20 308647