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HydraStark HTW-P4E Series 4-Tool Compact Electric Torque Pumps - product photo 1
zoom_in 700 BAR RATED
FACTORY DIRECT700 BAR

HTW-P4E Series 4-Tool Compact Electric Torque Pumps

Two-stage compact electric hydraulic torque wrench pump rated for 700 Bar (10,000 PSI), powered by a 1.1 kW brushless motor (75 dB) to drive 2, 3, or 4 torque wrenches across wind turbine and petrochemical applications.

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RATED PRESSURE:700 Bar (10,000 PSI) with Internal Relief Valve
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MOTOR SPECIFICATION:1.1 kW High-Efficiency Brushless Motor (220V, 50/60 Hz)
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NOISE RATING:75 dB Ultra-Low Operating Noise Level
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TWO-STAGE FLOW:Stage 1: 7.0 L/min (Rapid) | Stage 2: 0.8 L/min (High Pressure)
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MANIFOLD CONFIGURATION:2-Port Standard (Optional 3 or 4 Ports for Multi-Tool Drive)
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RESERVOIR & WEIGHT:5.0L Oil Reservoir with Protective Frame, 22.0 kg
sync_altOEM Cross-Reference:Enerpac ZU4-4TW Series
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Engineering Overview & Structural Features

The HTW-P4E Series Compact Multi-Tool Electric Torque Wrench Pumps provide high-efficiency, multi-point simultaneous hydraulic power rated up to 700 Bar (10,000 PSI). Powered by a durable 1.1 kW low-maintenance brushless motor (220V, 50/60 Hz) with a quiet 75 dB operational sound level, the two-stage hydraulic unit supplies 7.0 L/min rapid pre-fill flow transitioning smoothly into 0.8 L/min high-pressure delivery. Equipped with multi-port manifold options (driving 2, 3, or 4 hydraulic torque wrenches simultaneously), an integrated air-blast oil radiator matrix, an internal safety relief valve, and an all-around tubular steel roll cage, the HTW-P4E weighs just 22.0 kg for agile transportation across wind turbine nacelles, petrochemical pipe bridges, and mining overhaul sites.

CORE ENGINEERING ARCHITECTURE & TECHNICAL SPECIFICATIONS
01

1.1 KW BRUSHLESS MOTOR & 75 DB QUIET

Industrial-grade 1.1 kW brushless motor delivers continuous high torque without carbon brush wear or commutating spark hazards. Runs at a whisper-quiet 75 dB for comfortable indoor and enclosed-space operation.

02

TWO-STAGE HIGH EFFICIENCY HYDRAULICS

Dual-stage displacement delivers an exceptional 7.0 L/min at low pressure for lightning-fast tool piston advancement, automatically switching to 0.8 L/min up to 700 Bar for powerful, accurate final torquing.

03

MULTI-TOOL MANIFOLD (2 TO 4 WRENCHES)

Engineered with modular manifold ports allowing 2, 3, or 4 hydraulic torque wrenches to operate simultaneously with balanced hydraulic pressure, ensuring uniform circular flange compression without uneven bolt loading.

04

FORCED-AIR HEAT EXCHANGER MATRIX

Equipped with an integrated aluminum radiator and electric axial cooling fan that actively dissipates heat during high-cycle shift work, preventing hydraulic oil breakdown and maintaining peak pump efficiency.

05

MICRO-ADJUST RELIEF & GLYCERIN GAUGE

Knurled external adjustment knob and oversized vibration-damped pressure gauge allow repeatable calibration from 40 to 700 Bar with ±1% accuracy, paired with an internal relief valve for fail-safe tool protection.

06

22 KG PORTABLE FRAME & 24V REMOTE

Full tubular roll frame (375 × 300 × 458 mm) shields all functional components with handy cable wrap brackets. Includes an ergonomic 24V low-voltage pendant handle for safe single-operator control.

PROVEN ACROSS DEMANDING BOLTING OPERATIONS

Wind Tower Flange Bolting

Simultaneously driving 2 or 4 hydraulic wrenches across turbine foundation rings and tower segments, ensuring uniform circumferential gasket load and preventing flange warping.

Petrochemical Plant Maintenance

Fast pipe spool assembly and heat exchanger manway bolting where 75 dB low-noise operation and continuous oil cooler prevent thermal shutdowns in cramped corridors.

Mining Heavy Machinery Overhaul

High-torque fastening on excavator crawler tracks, ball mill liners, and rock crushers with rapid 7.0 L/min pre-stroke speed reducing machine overhaul downtime.

Marine Engine Foundation Mounting

Robust tubular cage and 22 kg portable dry weight enable effortless manual transit into ship engine compartments and dry docks for multi-point foundation anchoring.

OEM DIRECT INTERCHANGEABLEDIMENSIONALLY INTERCHANGEABLE

OEM Cross-Reference & Dimensional Interchangeability

VERIFIED MODEL DIRECT REPLACEMENT
HYDRASTARKHTW-P4E Series
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OEM BENCHMARKEnerpac ZU4-4TW SeriesCOMPARABLE SPECIFICATION

Two-stage compact electric hydraulic torque wrench pump rated for 700 Bar (10,000 PSI), powered by a 1.1 kW brushless motor (75 dB) to drive 2, 3, or 4 torque wrenches across wind turbine and petrochemical applications. 700 Bar / 4-Tool Synchronous.

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Direct Drop-in Replacement for OEM SKUs:

Enerpac®, SPX Flow®, Power Team®, Simplex®, Hytorc®, Holmatro® and other brand names are registered trademarks of their respective owners. HydraStark is an independent manufacturer and is not affiliated with, authorized or endorsed by these companies. OEM model numbers are listed for dimensional and specification reference only; please verify fit with our engineers before ordering.

speed

RATED PRESSURE

700 Bar (10,000 PSI) with Internal Relief Valve

tune

MOTOR SPECIFICATION

1.1 kW High-Efficiency Brushless Motor (220V, 50/60 Hz)

architecture

NOISE RATING

75 dB Ultra-Low Operating Noise Level

AUTHENTIC FACTORY WORKSHOP SHOTS

Real Product Details & Build Quality

HTW-P4E Series 4-Tool Compact Electric Torque Pumps - Authentic Factory Real Detail Photo 1
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HTW-P4E Series 4-Tool Compact Electric Torque Pumps - Authentic Factory Real Detail Photo 2
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HTW-P4E Series 4-Tool Compact Electric Torque Pumps - Authentic Factory Real Detail Photo 3
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Specifications

ALL MEASUREMENTS IN METRIC
Model
Rated Pressure
Bar
Voltage
V
Flow Rate Output
Oil Capacity
L
Power
kW
Weight
kg
Stage 1
L/min
Stage 2
L/min
HTW-P4E-270022070.851.122
HTW-P4E Series · 1 MODELS LISTED
RATED PRESSURE: 700 Bar (10,000 PSI) with Internal Relief Valve

Required System Components

PUMPS

HPM-P Series Hand Pump

700 BAR · TWO-SPEEDView Specs
MONITORING

HSG Series Pressure Gauge

0 - 1600 BAR · CLASS 1.0View Specs
FITTINGS

HQC Series Quick Couplers

700 - 1400 BAR · 3/8" NPTView Specs
SELECTION & PROCUREMENT

Frequently Asked Questions

Q1

How does the HydraStark HTW-P4E compare with the Enerpac ZU4-4TW?

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The HydraStark HTW-P4E range (HTW-P4E Series 4-Tool Compact Electric Torque Pumps) is positioned as an alternative to the Enerpac ZU4-4TW (OEM part numbers such as ZU4-4TW, ZU4408TW). Enerpac is a registered trademark of its owner; the reference is provided for dimensional and technical comparison only. Mounting dimensions, ratings and interfaces are listed in the specification table on this page — please confirm them against your existing equipment, or send us your OEM part number and our engineers will check compatibility before you order.

Q2

What are the key specifications of the HTW-P4E?

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Rated Pressure: 700 Bar (10,000 PSI) with Internal Relief Valve; Motor Specification: 1.1 kW High-Efficiency Brushless Motor (220V, 50/60 Hz); Noise Rating: 75 dB Ultra-Low Operating Noise Level; Two-stage Flow: Stage 1: 7.0 L/min (Rapid) | Stage 2: 0.8 L/min (High Pressure); Manifold Configuration: 2-Port Standard (Optional 3 or 4 Ports for Multi-Tool Drive). Full specifications and dimensions are given in the specification table below.

Q3

How is the HTW-P4E tested before shipping?

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Each unit is tested at 125% of its rated pressure before shipping (700 Bar rated, 875 Bar test pressure).

Q4

What are the lead time, warranty and shipping options for the HTW-P4E?

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Lead time is typically 2–3 business days when the model is in stock and 7–35 business days otherwise. Warranty is 12 months after receipt of goods. Shipping is available by sea freight, air freight or international express (DHL, FedEx, UPS). Send your requirements through the inquiry form for an exact quotation and delivery date.