Sherwood REGULATORS, SRB3200 2.0 SPECIFICATIONS

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

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Contents

Main REGULATORS Assembly & Maintenance Guide FIRST STAGE - MAGNUMII SRB3300, BLIZZARD SRB3200, OASIS SRB3400 ORIFICE ASSEMBLY PARTS FOR BLIZZARD FIRST STAGE SRB3205 TABLE OF CONTENTS 1.0 INTRODUCTION Page 2.0 SPECIFICATIONS 2.1 SPECIFICATIONS FOR THE SRB3300 MAGNUM II, SRB3400 & SRB3500 OASIS A. First Stage Regulator: B. Second Stage Regulator: 3.0 O-RINGS REFERENCE CHART 4.0 FIRST STAGE PROCEDURES 4.1 TOOLS REQUIRED FOR FIRST STAGE SERVICING 4.2 DISASSEMBLY OF FIRST STAGE Page Photo #2 CAUTION Photo #3 4.3 ASSEMBLY OF FIRST STAGE 4.4 TESTING OF FIRST STAGE A. Before You Begin Testing B. Dry Air Bleed Flow Test Figure #1 C. Intermediate Pressure Test 5.0 SECOND STAGE PROCEDURES 5.1 TOOLS REQUIRED FOR SECOND STAGE SERVICING 5.2 DISASSEMBLY OF SECOND STAGE A. Purge Button Change: Page 5.3 ASSEMBLY OF SECOND STAGE 5.4 SET- UP OF SECOND STAGE NOTE Photo #5 Photo #4 5.5 TESTING OF SECOND STAGE A. Inhalation Effort B. Exhalation Effort C. Leak Test D. External Air Leaks 6.0 HELPFUL HINTS 6.1 TROUBLESHOOTING REGULATORS A. High Inhalation Effort at Depth: B. Free Flowing: C. Wet Breathing: D. Humming or Buzzing During Inhalation: 6.2 PARTS CLEANING RECOMMENDATIONS 6.3 COMMONLY USED CLEANING SOLUTIONS 6.4 HANDLING TIPS A. Pre-Dive Checks B. Post-Dive Care 7.0 TWO YEAR WARRANTY AND MAINTENANCE INFORMATION 7.1 PROPER PROCEDURE FOR WARRANTY PAPERWORK 7.2 SCHEDULED MAINTENANCE ITEM # CATALOG # DESCRIPTION SECOND STAGE REGULATOR - MAGNUM II SRB3300, BLIZZARD SRB3200, OASIS SRB3400, OASIS (SRB3500) NOTE: Labels (Item 1 below) are also available in different colors.