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SPG's |
SCUBA Hoses |
Valves |
Reg Bag |
O2 Grease |
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| OMS ® WORKHORSE REGULATOR
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R-250 High Performance SCUBA Regulator |
The Workhorse™ unbalanced regulator has been the standard in SCUBA diving for years. Why? Its rugged, simplistic,
dependable, low cost design lends itself for use as a primary, recreational, technical and DECO regulator. This 40%
Nitrox ready regulator in fact was utilized by the National Park Service as a primary SCUBA regulator in its 190+ foot
dive to the B-29 bomber in Lake Mead! The Workhorse™ now comes standard with (1) Black (installed) (1) Green
(Oxygen) and (1) Yellow (Nitrox) cover. Also available as an Octopus with a 40"
hose |
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| Item # | Description | |
| R-236C | Regulator with piston 1st stage, and non-adjustable 2nd stage with black, green and yellow covers. | |
| R-236D | Regulator with Balanced Diaphragm 1st stage (R-251), and non adjustable 2nd stage with black, green and yellow covers. | |
| R-242 | Workhorse Octopus with 40" hose | |
| FIRST STAGE SPECIFICATIONS | ||||||||
| Item # | Description | Materials | 40% Nitrox Service | Intermediate Pressure |
HP Ports |
LP Ports |
Lpm | Valve Interface |
| R-1Stage-P | Unbalanced Piston | Brass Stainless Steel |
YES |
135 psi (9.3 bar) |
1 |
3 |
1950 LPM | 300 BAR DIN |
| OR | ||||||||
| R-251 | Balanced Diaphragm | Brass Stainless Steel |
YES |
140 psi (9.3 bar) |
2 |
4 |
1950 LPM | 300 BAR DIN |
| SECOND STAGE SPECIFICATIONS | ||||||||
| Item # | Description | Materials | 40% Nitrox Service | Venturi Assist | Performance | Cover Color | ||
| R-STAGE-B | Downstream |
Glass Filled Delrin |
Yes |
Yes |
Medium |
3 covers * Black Green Yellow |
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| R-242 | Octopus w/40" hose |
Glass Filled Delrin |
Yes |
Yes |
Medium |
Black | ||
| *Item # R236 includes 1st and 2nd stage, hose and (3) colored covers | ||||||||
| OVERPRESSURIZATION RELIEF VALVE for 1st Stage LP Port Valve (Optional) | ![]() R - OPRV |
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| Item # | Description | Material | Vent Pressure | |||||
| R - OPRV | LP Port OPRV | Brass / Stainless | 180 psi (12.4 bar) |
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| ADAPTER (Optional) | ||||||||
| Item # | Description | Materials | ||||||
| R - 239 | Yoke Adapter | Brass / Plastic |
Silicone Regulator Necklace | |||||
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OMS® SECOND STAGE SHUTOFF AND OPRV (S3)
The S3 when combined with the R-OPRV (sold as a kit only) is a major component in bringing 2nd stage free flows under control. The diver by actuating the black slide on the S3 can positively shutoff a free flowing 2nd stage and continue to dive switching to the redundant regulator (on a set of doubles) or an alternate air source. The R-OPRV is installed in one of the LP ports in the first stage, is mandatory as it vents excess pressure buildup between the second and first stages and prevents hose failure. |
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| Item # R-S3-K |
Description Second Stage Shutoff and OPRV |
| OMS ® HIGH PERFORMANCE REGULATORS |
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OMS® R-250 REGULATOR
R-250 owners manual
The new OMS® R-250 (40% Nitrox ready) 2nd stage features an adjustment knob for increased air flow and a Venturi assist for excellent WOB (work of breathing). The 40% Nitrox ready first stage incorporates a balanced diaphragm design that offers high performance and is clearly the choice for cold and/or contaminated water. The first stage is designed for vertical or horizontal positioning and with the (2) HP and (4) LP ports, many hose configurations are possible. Also available as an OCTOPUS with a 40” hose. Also available as an Octopus with a 40" hose |
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![]() ![]() ![]() R-251 Balanced diaphragm first stage |
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| Item # | Description | |
| R-250 | Regulator with balanced diaphragm 1st stage, adjustable 2nd stage and black, yellow and green covers. | |
| R-246 | High Performance Octopus with 40" hose | |
| FIRST STAGE SPECIFICATIONS | ||||||||
| Item # | Description | Materials | O-Rings / Grease | Intermediate Pressure |
HP Ports |
LP Ports |
Lpm @ 3000 psi |
Valve Interface |
| R - 251 | Balanced Diaphragm | Brass Stainless Steel |
Viton / O2 Grease |
135 psi (9.3 bar) |
2 |
4 |
1950 LPM | 300 BAR DIN |
| SECOND STAGE SPECIFICATIONS | ||||||||
| Item # | Description | Materials | O-Rings / Grease | Venturi Assist | Performance | Cover Color | ||
| R 249 | Adjustable Downstream |
Glass Filled Delrin |
Viton / O2 Grease |
Yes |
High |
Yellow Green Black |
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| R 246 | OCTOPUS with 40" (101.6cm) hose | Black |
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| * Item # R-250 includes Hose, 1st stage, 2nd stage and 3 colored covers | ||||||||
| OVERPRESSURIZATION RELIEF VALVE for 1st Stage LP Port Valve (Optional) | ![]() R - OPRV |
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| Item # | Description | Material | Vent Pressure | |||||
| R - OPRV ROPRV |
LP Port OPRV | Brass / Stainless | 180 psi (12.4 bar) |
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| ADAPTER (Optional) | ![]() |
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| Item # | Description | Materials | ||||||
| R - 239 | Yoke Adapter | Brass / Plastic |
Silicone Regulator Necklace | |||||
OMS® DEEP PERFORMANCE REGULATOR
The new OMS® Deep Performance™ regulators (R-600 and R-601) recently underwent extensive testing using a certified ANSTI simulator to demonstrate that they perform as well or better than many technical regulators at depth. The performance of OMS® Deep Performance regulators were tested using both US NAVY and EN-250 test parameters. At the extreme with a 1200 psi supply pressure and the breathing simulator ramped up to 75 lpm, the OMS® regulators (R-600 and R-601) stayed well under the 2.0 J/L limit as they screamed past the 300 FSW mark until the chamber reached its max. depth of 329 FSW. At this depth the OMS® Deep Performance regulator was still delivering a breathing performance at a flat 2.0 J/L! *Results of the testing showed that the R-600/601 regulators are highly recommended for overall work of breathing performance at depths to 329 FSW. At the Navy’s maximum depth limit for open circuit SCUBA (198 FSW), these regulators are capable of performing at work rates (62.5 RMV) far above the Navy’s minimum 22.5 RMV requirement. The R-601 tested with similar results. Second stage can be configured for use on divers right or divers left. |
R-600 Deep Performance Regulator with Adjustment Knob and Venturi Control |
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| FIRST STAGE SPECIFICATIONS | Item # R-600 | Item # R-601 |
| Design | Balanced Diaphragm | Balanced Diaphragm |
| Material | Brass / Stainless | Brass / Stainless |
| Environmental seal | YES | NO |
| Hose configuration | Fixed Ports | Fixed Ports |
| Low pressure ports | 4 | 4 |
| High pressure ports | 2 | 2 |
| DIN to Yoke Adapter | Included | Included |
| SECOND STAGE SPECIFICATIONS | Item # R-600 | Item # R-601 |
| Design | Pneumatically balanced | Pneumatically balanced |
| Flow Adjustment | Adjustable flow knob | NO |
| Free flow control | "NO FREE FLOW" purge cover | "NO FREE FLOW" purge cover |
| Venturi control | YES | YES |
| Regulator Body Material | Glass filled thermoplastic | Glass filled thermoplastic |
| W.O.B. | W.O.B. < .9 J/L | W.O.B. < .9 J/L |
| Hose configuration | Divers Left or Right | Divers Right |
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| Item # | Description | Item # | Description |
| R-251 | Balanced diaphragm first stage | R-251 | Deep Performance Regulator with Venturi Control, no adjustment knob |
SPG |
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Reg Bag |
O2 Grease |