Dredgers

The Specialist Offshore Services Anchor Zip 10 is a unique product which has been developed using the highly successful Zip Pump and Zip Jet technologies. The AZ10 has proven itself over the years for suction pile and caisson work, and any job which requires up to 9 bar of differential pressure/suction. It has a built in relief valve that can be set to maximum suction to protect suction piles and anchors.

Specifically designed for ROV deployment, the AZ10 will interface with most work class ROV hydraulic systems. Vehicles fitted with the Anchor Zip 10 will offer a very quick and cost effective way of installing and removing suction anchors with no need to recover for pump change out. Output pressures may be regulated to ensure that differential pressures remain within the structural limits of all types of suction anchor. Flow reversal for anchor recovery is cleverly and simply achieved by sliding the top assembly from the input to the output side of the centrifugal pump.

The Anchor Zip 10 is a heavy duty suction anchor pump designed for ROVs able to produce 25 HP of hydraulic power.

• Heavy duty system for work vehicle applications
• Flow reversal for anchor recovery if needed
• Suction relief valve pre-set from 1 to 9.3 bar
• Easily interfaced
• Ingenious durable moving body design
• Proven Zip Jet technology
• High efficiency and performance
• Worldwide support

Hydraulic Input

• Max Pressure: 4000PSI – 276 bar
• Max Flow: 15 gpm – 70 ltr/min

Pressure/Suction Performance

• Differential Pressure: up to 140PSI – Up to 9.5 bar
• Flow: Up to 80 cubic metres/hour at 7.5 bar

General:

• Anchor Port Connection: 3″ Ansi Flange
• Minimum Hose Internal Diameter: 75mm (3 in)
• Reverse Actuator Minimum Pressure: 1000PSI – 70 bar
• Weight in air: 30 kg – 66lbs
• Weight in water: 14kg – 31lbs

The Specialist Offshore Services Anchor Zip 20 complements the Anchor Zip 10 by offering higher flow specifications at lower pressures when larger suction anchors are being installed.

The Specialist Offshore Anchor Zip 20 Suction Pump is specifically designed for deployment on ROV and will interface with most work class hydraulic systems. Flow reversal for anchor recovery is cleverly and simply achieved by sliding the motor and top assembly from the input to the output side of the centrifugal pump.

• Heavy duty system for work vehicle applications
• Flow reversal for anchor recovery
• Suction relief valve preset from 1 to 9.3 bar
• Easily interfaced
• Ingenious durable moving body design
• Proven ZipJet technology
• High efficiency and performancy
• Worldwide support

Hydraulic Input

• Max Pressure: 250 bar
• Max Flow: Min 60 lpm to 145 lpm

Pressure / Suction Performance

• Water Flow: Up to 185 cubic metres/hour at 5 bar
• Pressure: upt to 9 bar at 10 cubic metre / hour

Connections:

• Motor A&B : 3/4″ BSP – 12 JIC
• Motor Drain: 3/8″ BSP – 6 JIC
• Valve Actuator: 1/8″ NPT – 4 JIC

Physical Properties:

• Dimensions: 485 x 425 x 286mm
• Weight in air: 38 kg
• Weight in water: 21 kg

The Specialist Offshore Services subsea LP pump is a Hypro centrifugal pump. Hypro Series 9300 hydraulic motor-driven centrifugal pumps provide smooth performance. The 150psi pump can be conveniently mounted on to the ROV, thus becoming part of the vehicle’s hydraulic system.

Designed for pumping fluids, Polypropylene centrifugal pumps may also be used to pump acidic and other highly corrosive liquids. Contact Specialist Offshore Services if more information on the ROV LP Pump is required.

On/ Off control of hydraulic supply to the pump, including adjustment of flow and pressure has been integrated by Specialist Offshore Services into a custom designed manifold.

• Maximum input pressure: 2000psi
• Maximum input flow: 26 LPM
• Maximum output pressure: Approx. 120psi
• Maximum output flow: 140 GPM
• Weight: 10kg in air

The Hypro “close-coupled” design reduces the mounting space required, so that it eliminates long shafts and couplers between the pump and motor. The pumping fluid is taken directly from the surrounding seawater.

The LP Pump can be set up to provide suction for items such as suction grippers.

Another option is that the ROV LP pump can also be used in conjunction with one or more of the Specialist Offshore Services hydraulic rotary actuators in order to provide low pressure back seal testing, double block and bleed or hotstab port selection, or precise control of LP fluid injection quantities.

The STS Predator system is a completely new concept in performance dredging. Its unique features make it the most efficient dredger on the market saving both vessel and operational time. The dredger can be easily mounted to the host ROV using its dedicated interface frame.

• Can be mounted to any Work Class ROV safely & quickly
• Certified lifting points & rigging
• Can be assembled / disassembled subsea by work class ROV / Diver
• Certified ROV mounting frame for fast mobilisation & on deck turnaround (optional)
• Can be configured for dredging or jetting subsea without need for ROV recovery (x 2 WROV required)
• Depth rated to 5000 MSW
• Optimum dredging up to 230mm rocks
• Comes with clay jetting nozzle & agitator as standard
• Optional lengths of suction / discharge hoses that can be changed out subsea
• Easily adapted to ROV or Diver use
• Can be converted to jetting mode subsea

The STS 10” Piranha dredger has evolved from our experience building ROV dredging units. Fitted with our custom bayonet – tri lock hose connector ensures a fast set up / re-configuration of the system on any WCROV. With less moving parts than the previous model, the new 10” Piranha is a more streamlined, highly efficient, reliable ROV / Diver dredger.

• Can be mounted to any Work Class ROV safely & quickly
• Depth rated to 5000 MSW
• Optimum dredging up to 230mm rocks
• Bayonet – Tri lock Interface Connector
• Easily adapted to ROV or Diver use
• Comes as standard with a 10” 360 Degree Cobra Head
• ROV Handle – Fish Tail 10” Clamp

The STS 12” Piranha dredger has evolved from our experience building ROV dredging units. Fitted with our custom bayonet – tri lock hose connector ensures a fast set up / re-configuration of the system on any WCROV. With less moving parts than the previous model, the new 12” Piranha is a more streamlined, highly efficient, reliable ROV / Diver dredger.

• Can be mounted to any Work Class ROV safely & quickly
• Depth rated to 5000 MSW
• Optimum dredging up to 230mm rocks
• Bayonet – Tri lock Interface Connector
• Easily adapted to ROV or Diver use
• Comes as standard with a 10” 360 Degree Cobra Head
• ROV Handle – Fish Tail 10” Clamp
• Low maintenance pump system

The 12” Dredger system is designed to be deployed on its own unique dredge deployment frame, that acts as a platform for all dredging operations and is designed to allow easy access for ROV and/or Diver use. The dredger can be operated by either a hydraulic downline from the surface or direct from the ROV supply, provided it can provide the required flow / pressure.

• Can be deployed subsea on unique deployment frame
• Certified lifting points & rigging
• Comes as standard with 12” 360 Degree cobra head
• Twin depth compensators
• Depth rated to 3000 MSW
• Optimum dredging up to 275mm rocks
• Optional lengths of suction / discharge hoses that can be changed out subsea ( Max 10m)
• Remote exhaust function for remote spoil dumping (Max 10m)
• Comes with hydraulic splitter manifold + gauge points

The STS 3” Gremlin system is a completely new concept in performance dredging. Its unique features make it the most efficient 3” dredger on the market saving both vessel and operational time. The dredger can be easily mounted to the host ROV using its dedicated interface frame or mounted to the standard STS dredge deployment frame for diver use.

• Can be mounted to any Work Class / Observation Class ROV safely and quickly
• Optimum dredging up to 40mm rocks
• Easily adapted to ROV or Diver use
• Self-standing frame
• Cam-Lock hose connectors for quick & easy connections
• Twin balanced shaft bearings which prolongs hydraulic motor life
• Depth compensated bearing housing provides unlimited depth
• Lightweight design

The STS 4” Gremlin system is a completely new concept in performance dredging. Its unique features make it the most efficient 4” dredger on the market saving both vessel and operational time. The dredger can be easily mounted to the host ROV using its dedicated interface frame or mounted to the standard STS dredge deployment frame. While optimum performance has always been a priority with this system, safety has also been a top priority. As such the Gremlin features a self-standing frame which means the dredger will sit up right on its own frame. Optimum performance is achieved by utilising the latest fluid dynamic research.

• Can be mounted to any Work Class / Observation Class ROV safely and quickly
• Certified ROV mounting frame for fast mobilisation & on deck turnaround
• Internal depth compensator
• Optimum dredging up to 80mm rocks
• Easily adapted to ROV or Diver use
• Self-standing frame
• Cam-Lock hose connectors
• Twin balanced shaft bearings which prolongs hydraulic motor life
• Can be fitted with back flush blanking plate for cavity jetting
• Optional pressure retaining backflush valve (PRBV)

The STS Predator system is a completely new concept in performance dredging. Its unique features make it the most efficient dredger on the market saving both vessel and operational time. The dredger can be easily mounted to the host ROV using its dedicated interface frame.

• Can be mounted to any Work Class ROV safely & quickly
• Certified lifting points & rigging
• Can be assembled / disassembled subsea by work class ROV / Diver
• Certified ROV mounting frame for fast mobilisation & on deck turnaround (optional)
• Can be configured for dredging or jetting subsea without need for ROV recovery (x 2 WROV required)
• Depth rated to 5000 MSW
• Optimum dredging up to 90mm rocks
• Comes with clay jetting nozzle & agitator as standard
• Optional lengths of suction / discharge hoses that can be changed out subsea
• Easily adapted to ROV or Diver use
• Can be converted to jetting mode subsea

The STS 4” Piranha is Subsea Tooling Services latest design in dredging technology. A slim, lightweight system designed to fit directly to a WCROV or diver dredge deployment frame. Utilizing our proven 4 stage pump driven from a 14 cc hydraulic motor, the STS 4” Piranha dredger is the lightest, most efficient 4” dredger on the market.

• Can be mounted to any Work Class / Observation Class ROV safely and quickly
• Optimum dredging up to 80mm rocks
• Easily adapted to ROV or Diver use
• Direct Drive System (No oil filled bearing housing or depth compensator)
• Depth Range – As per WCROV
• Self-Standing Frame c/w ROV Mounting Frame
• Cam-Lock hose connectors
• All Stainless Steel Construction
• 4 Stage maintenance free pump

The STS Piranha range is Subsea Tooling Services latest design of high performance dredging equipment. A light weight slim lined dredger designed to fit directly to the side of any work class ROV. The dredger system comes with 360 degree swivel heads which dramatically reduces wear on the ROV manipulator by eliminating all the rotation torque from the suction hose, making dredging much easier and more efficient.

• Can be mounted to any Work Class ROV safely & quickly
• Depth rated to 5000 MSW
• Slim line design to fit through tight A frames
• Lightweight design
• Remote flexi exhaust system optional
• Built in depth compensator
• 4 stage pressed stainless steel pump system
• Self-standing unit to avoid manual handling issues
• Quick pump coupling for fast re-configuration of the system

The STS 6” Piranha Lite is Subsea Tooling Services latest design of high-performance dredging equipment. A lightweight handheld dredger system designed to be fitted to ROV systems with garage / restricted A frames widths where it is not possible to fit tooling to the side or rear of the work class ROV.

• Light weight handheld system
• Depth rated to 5000 MSW
• Remotely fed ejector via 4” flexible pipe
• 6” Swivel Exhaust System
• Built in depth compensator
• Water Pump Mounts Within ROV Frame
• Light weight 4 stage pressed stainless steel pump system
• Quick pump coupling for fast re-configuration of the system

The STS Piranha range is Subsea Tooling Services latest design of high performance dredging equipment. A dredger designed to fit directly to the side of any work class ROV. The dredger system comes with 360 degree swivel heads which dramatically reduces wear on the ROV manipulator by eliminating all the rotation torque from the suction hose, making dredging much easier and more efficient.

• Can be mounted to any Work Class ROV safely & quickly
• Depth rated to 5000 MS
• Remote flexi exhaust system optional
• Built in depth compensator
• 2 stage pressed stainless steel pump system
• Self-standing unit to avoid manual handling issues
• Quick pump coupling for fast re-configuration of the system
• Cam-Lock quick release couplers on suction & exhaust end
• Can be mounted directly to a standard STS dredge deployment frame
• Fully anodized bearing housing & mounting clamps

 

The new 35 – 60 h.p. Merlin excavation pump is the must have successor to the Excalibur. Merlin incorporates many of the improved design features introduced on the small Super ZipJet pump which has proven to be so successful.

The pump is smaller, lighter and more robust with greater performance in both excavation and jetting functions. It features the same double seal arrangement as the Super ZipJet and a modular design provides great ease of maintenance.

• Robust proven design
• Small and light
• Rapid switching from suction to jetting
• Option of close fitting inlet strainer
• Reverse flush for suction nozzle

The Tritech Super ZipJet ROV Dredge Pump replaces the successful Tritech ZipJet Ultra range of suction & jetting systems.

The Super ZipJet pump incorporates many technical advances over the previous generation of ROV suction and jetting systems. These advances are a direct result of customer feedback.

Considerable emphasis has been placed on increasing the pumps efficiency in both the suction and jetting modes. The Super ZipJet pump incorporates several design features which improve its reliability and substantially reduce its maintenance costs.

The Super ZipJet pump will not block or jam because there are no moving parts on the dredging side of the system. Power is derived from a stream of high velocity fluid creating a low pressure region behind the suction nozzle. The pump may be rapidly switched from suction to jetting mode.