Number	Part Number	SMP Order Code	Description
1	510-509	DHXA.S0248	Head Harness (Spider)
2	510-510	DOBHS.S018	Hood & Seal Deluxe
3	545-015	DHXA.S0083	Nose Block Device
	510-575	DOBHS.S108	Nose Block Pad
4	520-020	DHXA.S0036	Valve Body
5	510-550	DHXA.S0026	Valve, Oral Nasal
6	530-060	DOBHS.S046	Screw ( 18 Only )
7	510-490	DHXA.S0209	O-Ring ( 18 Only )
	510-211	DHXA.S0015	O-Ring ( 28 Only )
8	550-081	DHXA.S0210	Regulator Mount Nut ( 18 Only )
	550-038	DHSL.M0105	Regulator Mount Nut ( 28 Only )
9	510-690	DHXA.S0025	Oral Nasal Mask
10	515-005	DHXA.S0168	Earphone, Right
11	515-006	DHXA.S0169	Earphone, Left
	510-542	DHXA.S0281	Earphone Cover Set
	515-008	DHXA.S0316	Speaker
	520-015	DHXA.S0466	Speaker Protector
12	515-009	DHXA.S0170	Shure® Microphone
13	515-030	DHXA.S0171	Communications Set
14	520-051	DOBHS.S038	Comfort Insert ( 18 Only )
15	530-095	DOBHS.S047	Screw
16	545-007	DOBHS.S062	Top Band
17	520-056	DOBHS.S120	Mask, Fibreglass ( 18 Only )
	520-096	DOBHS.S109	Mask, Xenoy Frame ( 28 Only )
18	530-535	DHXA.S0072	Washer
19	530-415	DHXA.S0066	Washer
20	530-317	DHXA.S0062	Nut
21	545-016	DHXA.S0084	Air Train
22	530-317	DHXA.S0062	Nut
23	530-535	DHXA.S0072	Washer
24	545-065	DOBHS.S110	Standoff ( 28 Only )
25	530-050	DHXA.S0052	Screw
26	510-260	DHXA.S0016	O-Ring
27	520-004	DHXA.S0034	Face Port ( Lexan ) ( 18 Only )
	520-128	DOBHS.S111	Face Port ( Lexan ) ( 28 Only )
28	560-070	DOBHS.S112	Port Retainer
28n	550-116	DHXA.S0183	Nose Block Guide
29	530-052	DHXA.S0053	Screw, Port Plug
30	530-035	DHXA.S0049	Screw
31	510-010	DHXA.S0010	O-Ring
32	510-008	DHXA.S0009	O-Ring
33	555-180	DHXA.S0130	Packing Nut
34	550-062	DHXA.S0119	Knob, Nose Block
35	510-554	DHXA.S0030	Whisker, Rubber
36	550-061	DHXA.S0118	Spacer
37	540-015	DHXA.S0079	Plate
38	530-045	DHXA.S0051	Screw
39	545-080	DHXA.S0405	Regulator Body ( 18 Only, pre '99 )
	545-080	DHXA.S0405	Regulator Body, Superflow 350 ( 18 Only )
	545-022	DHXA.S0087	Regulator Body ( 28 Only )
40	550-060	DHXA.S0117	Piston
41	535-807	DHXA.S0078	Spring Set
42	550-059	DHXA.S0116	Spacer
43	550-057	DHXA.S0115	Shaft
44	520-032	DHXA.S0040	Washer
45	510-011	DHXA.S0011	O-Ring
46	550-055	DHXA.S0114	Packing Nut
47	550-053	DHXA.S0113	Knob, Adjustment
48	530-601	DHXA.S0074	Retaining Pin
49	530-030	DHXA.S0048	Screw
50	545-020	DHXA.S0086	Clamp
51	545-018	DHXA.S0085	Cover Assembly
51a	535-905	DHXA.S0394	Retaining Clip
51b	540-055	DHXA.S0400	Cover
51c	535-810	DHXA.S389	Spring, Purge Button
51d	520-017	DHXA.S0337	Purge Button
51e	320-078	DHXA.S0486	Purge Button Sticker ( 18 Only )
	320-077	DHXA.S0487	Purge Button Sticker ( 28 Only )
52	510-553	DHXA.S0029	Diaphrgm
53	530-303	DHXA.S0060	Nut
54	550-052	DHXA.S0112	Spacer
55	545-038	DHXA.S0091	Roller Lever
56	530-506	DHXA.S0069	Washer
57	530-505	DHXA.S0068	Washer ( 28 Only )
58	535-804	DHXA.S0077	Spring ( 28 Only )
59	545-026	DHXA.S0089	Inlet Valve
60	510-014	DHSL.M0013	O-Ring
61a	550-046	DHXA.S0109	Inlet Nipple, "A"
61b	550-048	DHXA.S0110	Inlet Nipple, "B"
61c	550-050	DHXA.S0111	Jam Nut, "B"
62	510-552	DHXA.S0028	Exhaust Valve
63a	505-026	DHXA.S0007	Demand Regulator Assembly "A"
63b	505-027	DHXA.S0008	Demand Regulator Assembly "B"
	505-069	DHXA.S0243	Demand Regulator Assembly 350 "B"
63c	505-028	DHXA.S0174	Regulator Adjustment Assembly
64	530-021	DHXA.S0046	Screw
65	545-024	DHXA.S0088	Exhaust Cover ( 18 )
	545-041	DOBHS.S113	Exhaust Cover ( 28 )
66	510-561	DHXA.S0031	Main Exhaust Valve
67	550-063	DHXA.S0120	Exhaust Body ( 18 Only )
68	545-009	DOBHS.S063	Bottom Band
69	530-035	DHSL.M0049	Screw ( 18 Only )
70	550-040	DHXA.S0107	Nut
71	530-308	DHXA.S0061	Hex Nut
72	530-525	DHXA.S0070	Washer
73	515-035	DHXA.S0032	Communications Post
74	510-481	DHXA.S0018	O-Ring
75	550-043	DHXA.S0108	Plug
76	555-175	DHXA.S0246	Packing Gland
77	520-035	DOBH.M0036	Ferrule, Front
78	520-036	DOBH.M0037	Ferrule, Back
79	555-178	DHXA.S0129	Packing Nut
80	515-045	DHXA.S0033	W.P. Connector, Male ( 4 pin )
80a	505-047	DHXA.S0185	W.P. Connector Assembly, Complete
81	515-049	DOXOS.S104	Terminal
82	515-061	DHXA.S0184	Terminal Block
83	550-019	DHXA.S0094	Locknut
84	535-802	DHXA.S0076	Spring
86	520-016	DHXA.S0035	Knob, Control
87	550-020	DHXA.S0095	Bonnet
88	510-015	DHXA.S0014	O-Ring
89	520-031	DHXA.S0039	Washer
90	510-010	DHXA.S0010	O-Ring
91	550-022	DHXA.S0096	Valve Stem
92	550-023	DHXA.S0097	Seat Assembly
93	550-024	DHXA.S0098	Stud - Side Block
94a	550-026	DHXA.S0099	Side Block - "A"
94b	550-029	DHXA.S0100	Side Block - "B"
95	550-140	DHXA.S0160	Aux Valve Body
96	550-138	DHXA.S0161	Stem
97	540-095	DHXA.S0162	Washer
98	520-024	DHXA.S0163	Packing
99	550-091	DHXA.S0164	Packing Nut
100	520-025	DHXA.S0165	Knob, Control
101	535-802	DHXA.S0076	Spring
102	550-019	DHXA.S0094	Locknut
103	505-070	DHXA.S0166	Aux Valve Assembly
104	555-195	DHXA.S0125	One-Way Valve
105	555-117	DHXA.S0121	Adapter, Brass, 1/4" NPT/O2
	For replacement parts below Order Kit 525-330	Order Complete See Item 114
106		DOBHS.S114	Seat
107		DOBHS.S114	Wiper
108		DOBHS.S114	O-RIng
109		DOBHS.S114	O-Ring
110		DOBHS.S114	Poppet
111		DOBHS.S114	Spring
112		DOBHS.S114	Body
113	510-483	DHSL.M0019	O-Ring
114	505-060	DHXA.S0167	One-Way Valve Assembly
115	550-095	DHXA.S0158	L.P. Plug, w/O-Ring
115b	310-003	DHXA.S0159	O-Ring
116a	510-011	DHXA.S0011	O-Ring
116b	520-033	DHXA.S0041	O-Ring, Teflon
117a	555-152	DHXA.S0124	Regulator Hose
117b	555-154	DHXA.S0126	Bent Tube Assembly
118a	510-010	DHXA.S0010	O-Ring
118b	510-012	DHXA.S0012	O-Ring
119a	555-152	DHXA.S0124	Regulator Hose w/O-Rings
119b	555-155	DHXA.S0127	Bent Tube Assembly w/O-Rings
120a	505-022	DHXA.S0005	"A" Side Block Assembly Complete
120b	505-024	DHXA.S0006	"B" Side Block Assembly Complete

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