Graco 203831, 204500, 204501 important safety instructions Dimensions, Description Qty

Parts

Ref					Ref
No.	Part No.	Description	Qty.		No.	Part No.	Description	Qty.
1	101682	SCREW, soc hd cap; 1/4–20 x 5/8		6	17	171194	CAP, regulator	1
2	101754	PLUG, pipe; hex soc; 3/8 npt		1	19	162485	ADAPTER; 3/8 npt x 3/8 npsm	1
3	101971	RACE, thrust; adjusting nut		1	20	164863	SCREW, adjusting	1
4	101972	BEARING, needle thrust		1	21*	164864	PLATE, diaphragm	1
5*	187875	GAUGE, fluid pressure; 0–30 psi			22*	171198	GASKET, acetal	1
		(0–2 bar) (Model 204500 only)		1	25	204522	KEY, regulating (removable)	1
	101180	GAUGE, fluid pressure; 0–200 psi			26*	204523	SEAT, valve (Models 203831 &
		(0–13 bar) (Model 204501 only)		1			204501 only)	1
	101176	GAUGE, fluid pressure; 0–60 psi				206523	SEAT, valve (Model 204500 only)	1
		(0–4 bar) (Models 205425 &				212030	SEAT, valve (Model 205425 only)	1
		203831 only)		1	27*	206920	STEM, valve (Model 204500 only)	1
7*	150670	GASKET, copper		1		204524	STEM, valve (Models 204501 &
9*	157277	SEAL, o-ring; thiokol		1			203831 only)	1
10	160741	NUT, lock; diaphragm		1		205183	STEM, valve (Model 205425 only)	1
11	160745	TUBE, gauge mounting		1	28*	206921	HANGER, diaphragm	1
12	161349	NUT, spring adjusting		1	29	153996	SPRING, helical compression (Model
13	161351	SPRING, flat compression (Models					204500 only)	1
		203831 & 205425 only)		1	30	166618	CAP, spring (Model 204500 only)	1
	166617	SPRING, helical compression (Model			31*	172193	DIAPHRAGM	1
		204500 only)		1	32*	171912	GASKET; cellulose fiber	1
	160034	SPRING, helical compression (Model			33*	171913	GASKET; cellulose fiber	1
		204501 only)		1	34	171193	WASHER, plain	1
14	161889	UNION 45_ swivel; 3/8 npt(m) x			* Recommended “tool box” spare parts. Keep on hand to
		3/8 npsm(f)		1		reduce down time.
15	161357	BUSHING, fluid outlet		1
16	161358	BODY, regulator		1

Dimensions

5.5” (140 mm)

Model 204500: 11.25” (285.8 mm)

Models 203831,

204501, & 205425 9.75” (247.7 mm)

Weight:

Model 204500: 4 lb (1.7 kg)

Model 203831: 5 lb (2.3 kg)

Model 204501: 5 lb (2.3 kg)

Model 205425: 5 lb (2.3 kg)

.62” (15.8 mm)

3/8 NPSM (M) OUTLET 3/8 NPSM (F) INLET

Fig. 5

306563 11