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2.0 SPECIFICATIONS
2.1 SPECIFICATIONS FOR THE SRB3300 MAGNUM® II, SRB3400 & SRB3500 OASIS®
REGULATOR MODELS: Sherwood Magnum II SRB3300,
Oasis SRB3400 & SRB3500
AIR FLOW: 28-29 cu. ft. (793-821liters)/min. @ 1 atmosphere
INHALATION RESISTANCE: 1.1” (2.8 cm) w.c. @ 1 atmosphere
EXHALATION RESISTANCE: 0.8” (2 cm) w.c. max. @ 1 atm.
RECOMMENDED LUBRICANT: LTI Christo-Lube
®
A. First Stage Regulator:
TYPE: Flow-by piston with Moving Orifice Balancing and
Dry Air Bleed - U.S. Pat. # 4,226,257
WEIGHT: 1 lb. 3 oz. (.54kg)
INTERSTAGE PRESSURE: 135 -150 psi (9-10 bar)
MAXIMUM INLET PRESSURE: 232 Bar for SRB3300CE, SRB3900CE,
SRB3400CE & SRB3500CE Models
POSITIVE AIR PURGE
FLOW RATE: 13-27 cc/minute
# LOW PRESSURE PORTS: 4 (3/8”-24 UNF)
# HIGH PRESSURE PORTS: 2 (7/16”-20 UN)
MATERIALS: Body - CDA-360 Brass
O-rings - Buna-N
Bleed Valve - Ethylene Propylene
Piston Seat - Teflon
®
B. Second Stage Regulator:
TYPE: Downstream valve, diaphragm, Variable Fulcrum
- U.S. Pat. #3,991,785
WEIGHT: 7.6 oz. (.22 kg) ( w/o hose)
HOSE LENGTH: 31 in. (.79 m)
MATERIALS: Cover - Thermoplastic Vinyl
Case - Thermoplastic Triax
®
Poppet Seat - Buna-N
Poppet Seat - Buna-N
O-Rings - Buna-N
Diaphragm - Tufel
®
(black)
Exhaust Valve - Thermoplastic Elastomer (blue)
Mouthpiece - Liquid Silicone Rubber
Maximum certified depth is 50m
3