Features• Remote Electronic or ROV / Diver Adjustable• Proven Reliability (8,000 SkoFlo valves around the world)• Onboard Flow and Pressure Monitoring on Electric Models• 10,000 ft (3km) Rated Operating Depth — Deeper Available• Up to 15,000 psi (1034 bar) Service Pressure• Docks and Operates with Full Rated Pressure Drop Across Valve• Fail As-Set Design, Maintains Flow Control• Cost Savings Through Reduction in Umbilical Tubing Lines• 1 or 2 Valves per Docking Assembly• Onboard Filtration• Sensors Available for Wellhead/Down-hole Monitoring

SkoFlo Industries, Inc. www.SkoFlo.com Phone: (425) 485-7816 USA

MOTOR SF

Qin

Qout

Valve HeartProven Reliable...Over 8,000 in Service for 16 years

➛ Qin

Inletand/orOutletPressure

Time

OutputFLOWRate

Time

Qout➛

0.1-5 gpm (0.4-18.9 l/min),0.15-10 gpm (0.4-37.9 l/min),0.25-15 gpm (1-56.8 l/min)

The SkoFlo valve operates on a simpleand reliable principle of a given fluidflow rate will generate a consistentpressure drop across a knownrestriction. This pressure drop producesa net force on a piston which is counteredby a spring force. A ceramic throttlingpoint attached to the piston keeps thespring force equal to the pressuredifferential and thereby maintains aconstant flow that is independent ofexternal pressure fluctuation. Noadjustments are needed to maintaina preset flow!

The diagrams below show fluctuating pressure in with a steady flow out.

Pressure Independent Flow

Fixed Orifice “LF” Series1-7570 l/day @ 1,034 barg0.3-2000 gal/day at 15,000 psig

How SkoFlo Works For You

Standard Sensors - Orifice Inlet

- Orifice Outlet1

1Not externally readable

Optional Sensors - Measures Valve

Outlet Pressure - Measures Valve InletNote: P4 can be used tomonitor filter condition

= Dp Flowmeter

2

Motor

SF

ProcessInjectionPressureand/orchemicalInputPressure

SkoFloOutputFlowVolumeIntoProcessFluid

TimeSkoFlo Sub Sea

Chemical Injection Valve

Time

Inlet

ThrottlingPoint

➛

Piston

Stem

Outlet

MeasurementOrifice ➛

➛Filter

Stem

➛

➛

Outlet

ThrottlingPoint

➛

P1

P2

P4

P3

P1

P2

P3

P4

Variable Orifice“MF” Series

➛

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TheSkoFloadvantage!

P1

P2

P3

P4

➛

Precision FixedOrifice

Filter

VariableOrifice ➛

Valve Options:� Single SkoFlo Valve Core

• Fixed or Variable Orifice Design◗ Fixed orifice (LF) design standard

0.5 to 2000 gal/day (1-7570 l/day)� Flow as low as 0.3 gpd (1 l/day)

available• Variable orifice low flow (MF) design

0.15-15 gpm (0.4-56.8 l/min)

� Dual SkoFlo Valve Core (caninject the same or differentchemicals)• Two fixed orifice design SkoFlo

valves• Two variable orifice design SkoFlo

valves• One fixed and one variable orifice

design SkoFlo valves• One SkoFlo valve plus a jumper/

bypass

� Large Internal filters (up to110 in2–750 cm2 filter area)

� Side mounted ROV replaceablewetmate connector available

Valve Specifications� Weight in water approx. 200 lbs

(90 kg) with dual valve cores

� 10,000 ft (3km) Operating Depth

� Up to 15,000 psi (1034 bar)Service Pressure

� Flow measurement accuracy of5% or better depending on actualflow conditions

Remote Adjustable Sub Sea ValveROV or Diver Replaceable

3

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➛SSV MatedwithReceptacle

Note: Specifications are subject to change.See submittal sheets for exact dimensions.

LiftingHandle

DockingCanister -ROV/TorqueTool End

Docking Canister -Receptacle End

Typ. FluidCouplings

Latch

DockingReceptacle -Mounts toSubsea Panelor Control Pod

Stab PlateElectricalConnector

Electrically Operated Valve OptionsSingle or Dual Valve Cores With Stab PlateWetmate Connector

ROV ReplaceableDocking Canister

➛➛

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➛

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➛

➛➛

➛➛ ➛

Stab Plate WetmateElectrical Connector

Or

Docking Receptacle –Fixed to Christmas Tree

Optional 2nd Valve orEmpty for SingleValve Model

J-Plate

Inlet Fluid #2

DockingLedge orSaddleOutlet Fluid #2

OutletFluid #1

Inlet Fluid #1

Bypass Loop orOrifice Holder

1st Valve Core

➛

4

➛

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• 2 valves per docking canister saves valuable space on yoursubsea panel.

• 2nd position inside of the canister can be used as a flushingjumper to bypass valve.

• With additional pressure transducers and a fixed orifice, thebypass jumper above can also serve as a flow meter to accuratelymeasure the amount of bypassed fluid such as in a purge.

• Second valve core can be configured for 2nd chemical or as aredundant system.

• With single core or single core and bypass – a large last chancefilter is available with capacity of up to 110 in2.

• CANBUS, MODBUS, Profibus or Analog Output• 4w Max per Core, 24 VDC +/-4 Std.

➛

Core #2 BypassOrifice with Filter/Bypass Loop

➛J-Plate

➛

Tree MountedDocking Saddle

ROV Retrievable, RemoteAdjustable Single andDual Core Docking Valve

➛

Core #1 SkoFloValve w/J-PlateElectrical Connector

➛MQC/TemplateMount Valve

➛

ROV Mateable SideMount Electrica|Connectorwith Guide Cone

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Docking Canister

Dual Core SkofloDocking Valve w/Side MountElectrical Connector andExtra Capacity Filters

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5

Winner ofBritish Petroleum’s

Inventionof the Year

Award, 2001

View ofinsidecontent

View ofinsidecontent

Filter

➛

SFI’s flowmonitoring andfield conditionstest center

• All SkoFlo valves tested to100% flow capacity atworking pressure ratings.

• Temperature controlled flowcalibration can be done withactual field chemical.

• Component Helium leaktesting.

• All instruments traceableto NIST.

SFI offers complete environmental extremes testing Including:• Shock and Vibration.• ATM tests to 6000 psi (413 bar) -13,300 ft (4053m).• Docking tests under injection pressure.• Temperature, injection and supply pressure tested to 15,000

psi (1035 bar) and -60oF to 195oF (-51C to 90C). Externalpressure can be simulated to 6,000 psi (414 bar).

6

Website:www.SkoFlo.com

Phone:(425) 485-7816 USA

Screw Type Injection Valves

FEATURE SkoFloTrue pressure independent CONSTANT flow? Yes NoSet it and forget it! Self-compensating flow control? Yes NoDoes valve have to be reset for changes in pressure? No YesLow power requirements? Yes NoMaintains desired flow rate during power/communications loss? Yes NoCalibrated orifice flow measurement / True flow meter? Yes NoLarger internal passages for greater clogging resistance? Yes NoResists small passageway film build up? Yes NoPeriodic cycling to keep passageways clear? No YesCan debris seize valve adjustment? No YesWear resistant ceramic metering orifice? Yes NoAdjustment threads in contact with chemical? No YesDoes the chemical’s filming action cause a flow change? No YesIndependently verified flow rate accuracy for 3-month trial? Yes NoInternals resist corrosion from all industry standard chemicals? Yes NoLowest maintenance costs and best operational value? Yes NoFailsafe Design? (Flow stays constant if motor fails) Yes No

7

✗ Can only estimate actual flow.✗ If threads are filmed or dirty, Cv

is not as assumed.✗ Result? Non-accurate chemical

injection rate.✗ A 0.0001" (0.003mm) of film can

result in a flow loss of 5% in lowflow systems!

✗ Requires constant stem ditheringTo maintain flow – causingincreased wear and reduced gearmotor life.

ScrewValve

PressureMeasurementTaken alongflow path -not acalibratedorifice

Long, narrow flow path proneto filming and clogging

Small areas proneto film cloggingand jamming bydebris

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Website: www.SkoFlo.comPhone: (425) 485-7816 USA

Note: Dimensions are approximate. Contact factory for specific dimensions as designs are subject to change.

SkoFlo Industries, Inc. P.O. Box 1728, Woodinville, WA 98072 USAPhone: (425) 485-7816 Fax: (425) 486-5672 www.SkoFlo.com

ApproximateDimensions ofSkoFloSubsea ValvesDimensions in Inches [mm]

Subsea Docking Receptacle Subsea Template Mount Valve,Approximate Weight 40lbs (18 Kg)

ROV Retrievable Subsea Valve Docked in a Receptacle

ROV Retrievable Subsea Valve Canister, Approximate Weight 150lbs (68 Kg)

44 [1114mm]31 [784mm]

17 [432mm]

13 [3

30m

m]

14 [356mm]

42 [1063mm]10 [260mm]

28 [699mm]

6 [1

56m

m]

3 [89mm]

More Technical Information Available at SkoFlo.com

Contact Information:

Class 3 or 4 Latch withAPI 17D Bucket

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