Gas Blending Accessories | Scuba Center | Gauges, Transfill Hoses,...


CAGE Code: 3PHY4

Gas Blending Accessories

Global Manufacturing Corporation ( GMC ) -- GMC is a leading manufacturer and distributor of divers accessories, test and technical equipment for Recreational, Technical, Commercial, and Public Safety Diving.

Global Reference Information (PDF)

Global Nitrox/O2 DIN Cross Over
# 45345ox
Used to interconnect two DIN-mode scuba tanks for pressure equalization. Equalizers have 2-foot Teflon-lined / stainless steel hoses and bleeder vents. Delivered Oxy-Clean. 3200 psi service.

Price: $149.95

Global Deluxe Nitrox/O2 DIN Cross Over
# 45346ox
Identical to #45345, except that the bleeder block contains a 4,000 psi oxy-clean gauge to monitor pressure transfer

Price: $185.00

Dwyer Digital Mixing Gauge - Oxy Version
# 45305ox
This O-ring sealed gauge with a rugged anodized aluminum case features 0.25% accuracy, selectable pressure scale (5,000 PSI or 350 BARS), automatic zeroing, and 2,000 operating hours on two AAA batteries! 1/4" male NPT bottom stem mount. GMC sells a custom-production model that eliminates certain trouble-some functions such as unstable zeroing, 2-minute auto shutoff and peak value memory, all of which interfere with conventional blending operations. Delivered Oxy-Clean

Price: $428.00

Global Basic Gas Blender # 45555ox *
	This is a simplified device for partial pressure blending of single tanks of Nitrox, Trimix, or decompression mixes. It consists of a 300 bar, DIN-mode gas-mixing whip (5-foot hose) with stainless steel Metering Valve, a Dwyer Digital Gauge (with 0.25% accuracy and a protective rubber cover), and a check valve to prevent resurgence of scuba tank gas. The supply end of the Blender is equipped with a quick coupler, so that the unit can be readily switched from one supply gas to another. Included are Gas Supply Connectors for inputting both pure oxygen (CGA 540) and Oxygen Compatible Air (OCA). This latter adapter allows the unit to be attached to any air station filler whip (yoke-mode) that can provide OCA. Delivered Oxy-Clean
	Basic Gas Blender # 45555ox	Price: $949.00

Various accessories are available to increase the versatility of the Blender: (#45189ox - Converts the DIN-mode filler to yoke mode) (#45557ox is a helium Gas Supply Connector for blending Trimix) (#45556ox - An adapter to connect the Blender to a DIN-mode air station whip) (#45559ox - A Gas Supply Pressure Quick Tester to swiftly ascertain the available supply gas pressure prior to mixing) (#45558ox - A valve and coupler assembly that installs in the outlet port of most Hyper-Filters, providing an attachment point for the Blender to receive OCA). Because this product is sold in "ala-carte" fashion, it is less expensive than the #45465ox Economy Portable Mixer, which incorporates many premium features and includes many accessories.
	45189ox DIN Filler to Yoke Converter	Price: $59.95
	45556ox Blender to DIN Air Fill Whip	Price: $57.50
	45557ox Helium Gas Supply Connector	Price: $62.50
	45559ox Gas Supply Pressure Quick Test	Price: $145.00

Global Economy Mixer Complete # 45465ox *
Working downstream from the gas supply bottle, this unit includes: A detachable, green handtite nut & Soft-seal filter tailpiece which connects to a commercial oxygen cylinder (CGA 540 valve). the O2 outlet nipple engages a brass bleeder block by means of a Quick Coupler. This block contains 5,000 psi gauge to monitor the gas supply pressure. Attached to this block is a 5 foot hi-pressure Teflon-core hose (stainless steel overbraid for 4,500 psi service) mated to a #45475 Flow Controller, consisting of an oxy-version line valve with a pin-hole metering orifice to allow precision flow control. The downstream side of this Controller has another Quick Coupler that snaps onto the filling head which contains a check valve to prevent back-flow of gas from a dive tank and a DIN bleeder block holding a PG-7 Digital Pressure gauge for determining the actual mixing pressures.
	Also includes three special adapters: A #45189 Converter switches the DIN-fitting over to yoke-mode, so that tanks with either DIN or yoke valves can be charged; two air adapters (#45468 / #45469) connect respectively to a DIN or yoke-mode whip from a reliable source of oxy-compatible air to supply OCA to the Mixer. Unique design with two bleeders allows switching gas supplies or dive tanks without depressurizing entire system or suffering costly supply gas loss. Using the Controller, the permissible gas flow rates of 50-70 psi / minute into the dive cylinder can easily be achieved and maintained manually. The model PG-7 Digital Gauge (5,000 psi) is environmentally resistant, battery-powered, and has 0.25% accuracy. The Mixer is rated for 3,200 psi in yoke mode, 4,500 psi in DIN, and is delivered Oxy-Clean in a padded, nylon carrying bag.
	Economy Mixer Complete # 45465ox	Price: $1695.00

Two other optional adapters are handy for using the Mixer with other hydrocarbon-free respiratory gases: #45228 is a Quick Coupler mated with a CGA 580 handtite nut & Nipple so that the Mixer can be attached to a helium source for mated with A CGA 580 handtite nut & Nipple so that the Mixer can be attached to a helium source for making Trimix. Adapter #45229+ (CGA 347 handtite nut & nipple) permits the unit to be connected to bottled OCA air and will fit both CGA 346 or 347 type commercial valves.
	45228ox Helium QC Adapter	Price: $57.00
	45229ox OCA Air QC Adapter	Price: $69.95

* Note: To ensure proper function and oxy-cleanliness, most GMC mixing apparatus is built and tested to order.
Please allow additional lead time

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While these are excellent reference materials, in no way should this information be considered a replacement for proper training for the specific type of diving in which you plan to participate. Gas blending should only be attempted by properly trained and certified gas blenders.

Economy Mixer Complete # 45465ox