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FIRST STAGE - MAGNUM®II SRB3300, BLIZZARD® SRB3200, OASIS® SRB3400
NOTE: The Oasis
®
+ SRB3500 uses the SRB3601 externally adjustable first stage. The parts
breakdown and servicing of the SRB3601 is covered in the Oasis2/Blizzar
d Assembly & Maintenance
Guide. Oasis
®
+ regulators manufactured in 1990 have the SRB3801 first stage with the DSS feature.
The servicing of the SRB3801 first stage is covered in the
Ultima SRB3800 Assembly & Maintenance Guide
. To
determine the first stage of a particular regulator, compare
the regulator with the pictures and diagrams in this guide as
well as the other guides referenced above. For further
information, contact your authorized Sherwood Distributor.
ITEM # CATALOG # DESCRIPTION
SRB3305 ........First Stage Complete
1 ....................3701-70 ......Handwheel
2......................3504-6 ........Star Washer Retainer
3......................1390-7 ........Filter
4.................29-3106-13A ....Moving Orifice
(bare, no o-rings etc.)
5 ....................3601-20 ......Moving Orifice Assembly
(with o-rings & washers)
6.................19-8010-8 ........Belleville Spring Washers (5 needed)
7 ....................G007A ..........O-ring (2 needed)
8 .............MS28774-007 ....White Backup Washer
9..................... 5705-20 ......Dust Cap
10.................. 1-1665-17 ......Yoke Nut
11 ................. 2-3801-4..........Yoke
12 .................2-3305-1 ........Body
13 ................... G904A ........O-ring (for H. P. port plug)
14 .................1-3405-4 ........H. P. Port Plug
15 ....................3106-6 ........One Way Bleed Valve
16...................1-3105-6 ........L. P. Port Plug
17 ....................G011B ........O-ring (for L. P. port plugs)
18 ....................G122A ........O-ring (seals cap to main body)
19 .....................3801-12B ....Main Spring
20..................19-6526 ..........Shim (to raise hose pressure)
21 ....................G007A ........O-ring (for small end of piston)
22 ....................3801-5 ........Piston Seat
23 ....................3107-10 ......Piston Assembly
(includes seat & O-rings)
24 ....................G022A ........O-ring (for large end of piston)
25.................. 2-3305-2 ........Cap
ORIFICE ASSEMBLY PARTS FOR BLIZZARD FIRST STAGE SRB3205
The following parts are the only parts that differentiate
the Blizzard SRB3205 first stage from the standard
Magnum II type SRB3305 first stage:
ITEM # CATALOG # DESCRIPTION
B1......................3504-6 ........Larger Star Washer (holds orifice in body)
B2 ...............J26005-43B ......Smaller Star Washer (holds filter in orifice)
B3 ..................18-3106-14 ....Filter
B4 ....................G011B ........O-ring (seals filter to orifice)
B5 ...............29-3106-13 ......Moving Orifice (bare, no O-rings etc.)
B6 ....................3106-9 ........Moving Orifice Assembly (with O-rings & washers)
B7 ..............64-8010-8 ........Belleville Spring Washers (4 needed)