China Scuba Oxygen Pump Oxygen Booster Pump Pneumatic Oxygen Booster

USUN Model :XB30-OL easy to carry mini scuba pneumatic oxygen gas booster
pump for diving club

Usunair driven gas boosterpumpsare ratio devices that utilize low pressure compressed

airdriving a larger diameter piston (area x pressure) which is linearly connected to a smaller

hydraulicpiston/plunger. Using this ratio principal, a higher hydraulic pressure can be generated.

UsunPump model numbers reflect the pumps nominal pressure ratio, while the technical data

indicates exact ratios.The outlet stall pressure is easy to set by adjusting the air drive pressure

through a simple air pressure regulator. By multiplying the pressure ratio by the available shop

airpressure, the nominal gas pressure can be calculated.

Example ( Pump Model:GB25 Gas booWatch Box sterpump)

Air drive piston area (160mm Ø)

Hydraulic plunBreaker & Protector ger area (32mm Ø)

Actual ratio =25:1

1. AIR DRIVE SECTION

The air drive section consists of a light weight piston complete with seals running inside an

aluminumbarrel. The diameter of the air piston is160mm. When compressed air is supplied to

the pump the airpushes the air piston down on a compression stroke

(forces as out of the gas end).

Under thecontrol of pilot pins (poppet valve) triggered at each end of the stroke

2. GAS DRIVEN SECTION

ThegassectionofaUSUNairdrivengasboosterconsisitof4mainpieces

,thegasbarrel,thepistonthecheckvalvesandthemainhighpressureseals.

ThegaspistonisdirectlylinkedTools & Hardware totheairpistonanditishousedinsidethegasbarrel

anditsmovementsupanddowncreatesthegasflowintoandoutoftheboosterthrough

thecheckvalves.Thecheckvalvesarepsringloadedandonthesuctionstroke.the inlet check valve

opens to the maximum allowing gas into the gas barrel and on the compression stroke

the inlet check valve closes the discharge check valve opens forcing the pumped gas

into the process .Themainhighpressuresealsislocatedonthegaspistonandtheysealagaist
thegasbarrelduringoperation. and the maximum pressures of the pump ,however the

standard PTFE seals are suitable for both the vast majority of gases encountered.

Othermaterialsofconstructioncanbesuppliedtomeetmoreaggresiveservices

.Thestandardserialsofboosterarenotsuitableforundergroundcoalmineapplications.

USUNDOManufacturemodelsof air driven gas boostersthat arenotsuitable for undergroundcoal mine applications .

USUN Air driven gas boosters cycle automatically as the outlet pressure increass the

resistance alsoincreasesandthecycleratedecreasesuntilthepumpstopsautomatically

whentheoutputpressureforcesareequal.Thisisreferedtoasthestallcondition.

Thepumpwillrestartwithaslightdropintheoutlletpressureoranincreaseinthe airdrivenpressure
Boosterperformancecanbeaffectedbyanumberofconditions,

suchasfreezingoftheexhaustmufflerorpilotvalves(Whichiscausedbymoisturein

airlines),inadequateinletairlinesizesanddirtyfilers.When operatingtheboosters

onacontunuousbasis,werecommendyouuseamaximumcyclerateof50-60cyclesperminute.

Thiswillbothincreaseserviceintervalsandassistinpreventingiceformingattheexhaust.

Anairsupplydryerwillalsoassistinreducingicingup .

USUNGasboostershavea120mmstrokethusreducingcycleratesatanygivenflow

andpressureascomparedwithmostotherbrands.Thislowerrepsectivecyclerateres

ultsinareductioninfreeze-up condTag Gun ition.

Toabtainbestoverallperformance,donotreducetheindicatedportsizeandconsult

USUNforflowconditionsnotshownincharts Model selection for gas booster

Itisveryimportanttorememberthattheperformanceofanyairdrivendeviceisverydependentontheairsupplyconditions.Restrictionsintheairsupplycanbecausedbyusingatoosmallaircompressororairlines.TheFLOWCHARTSSHOWNinthetechnicaldatasheetarebasedongoodconditions .sopleasedonot"designtotheline"allowforlossesandinefficiencies

The next question is wheather you want the booster to stall when an outlet pressure is reached

If so ,a simple airline pressure regulator will suffice ,but remember the flow drops off dramatically as the

booster reaches a stall condition .

Ifyourequireflowataparticularpressure,thenyouneedreadtheflowcahrtscarefullyandconservatively

Ifyouneedthepumptostopatacertainpressure,priortostall,thenanairpilorswitchesneedstobeinstalled.

Key features

1. Realiable ,Easy to Maintain ,compact and robust

2. No heat,flame or spark risk

3. Infinitely variable cycling speed and output

4. Air driven Models do not require electrical connection ,easy to apply automatic controls

5. No limit or adverse affect to contineous stop/start applications

6.Seals system designed for long working life,No airline lubricated required

7.Built-in coupling system (Most models) and suitable for most gases boostingMain technical data Typical technical data for air driven gas booster pump

Maximum Output pressure
240 Bar base on 8 bar air driven pressure
Pressure ratio30:1Inlet gas pressure range
25-200 BarMaximum gas Flow
60-80 liters peHand Tools r MinWorking medium
Specially for Oxygen gas ,which can be used for diving and aircraft industryDriven Power
Compressed air of 3-8 BarInlet /Outlet port size
NPT1/4''Air driven port Port size
PT3/8''Air consumption
0.6-0.8 M3 Per minOutput pressure formulaPO=30 PA

Remark 1) Maxium outlet pressure are at an air driven pressure of 8 bar or 116 PSI ,for long life using

of such pump ,we suggest that air driven pressure should be not more than 8 Bar.Typical application of such air driven oxygen gas booster pump