NG10 · CETOP 5 · ISO 4401 SIZE 05

DG4V-5 Directional Control Valve, Sized for the Machines You Already Run

A four-port solenoid valve with a four-land spool, rated 315 bar on the working ports and built for continuous duty. Subplate mounted, so it drops onto a size 05 manifold without redrilling.

315 bar

ports P, A and B

210 bar

tank port, DC builds

ED 100%

continuous duty

17 spools

plus left-hand builds

Where a size 05 valve earns its place

Six industries account for most of the demand for this interface. In each one the job is the same: switch a flow, hold it, and release it, thousands of times a shift without disturbing anything else on the machine.

Injection moulding & die casting

Clamp open and close, ejector stroke, core pull, and the shot sequence on a die-casting machine. These are short, repeated moves under load where a gentle shift protects the mould.

Equipment: clamping units, ejector plates, core pull cylinders, shot cylinders

Machine tools & machining centres

Workholding clamps, pallet indexing, tailstock advance, tool magazine and chuck circuits. The duty is repeatability rather than raw force.

Equipment: vices, chucks, index tables, tool changers, steady rests

Power units & test rigs

Circuit selection on a multi-branch power pack, unloading, accumulator isolation and step-by-step sequencing on a test stand.

Equipment: power packs, valve stands, accumulators, test benches

Mobile & construction machinery

Boom and outrigger sequencing on concrete pumps, implement selection on excavators and loaders, outrigger control on cranes and access platforms.

Equipment: boom cylinders, outriggers, implement circuits, stabilisers

Metallurgy & heavy industry

Rolling mill stand and descaling circuits, press ram advance and return, long low-pressure holds while a part is worked or clamped.

Equipment: press rams, roll balance cylinders, descaling headers, shears

Mining, marine & waste handling

Conveyor tensioning, brake release, slew control, deck winches, hatch actuation and the cycle valve on a compactor.

Equipment: winches, brakes, slewing drives, hatch covers, balers

Three machine cases, matched feature by feature

Read the left column as what the machine demands, and the right column as which part of the DG4V-5 answers it. This is how the selection usually gets settled in practice.

Case 1 · Injection moulding machine, clamp and ejector circuit

Must hold clamp pressure as long as the mould is shut	Continuous duty, ED = 100%. No duty cycle to calculate, no derating.
On a power loss the actuator has to reach a defined position	Spring offset A or B, or spring centred C for double-ended builds.
Mould and cores must not be shaken by a hard shift	DC models allow variable changeover speed; an orifice plug slows the stroke and spreads the pressure rise.
Cabinet runs hot next to the barrel	DC builds accept 70 °C ambient against 50 °C on 50 Hz AC.

Case 2 · Machining centre, workholding and indexing

Clamp must stay engaged through a power interruption	Detent build N, no spring, so the spool stays where it was left.
Cycle time depends on how fast the valve answers	Published reference on a 2C spool: AC 30 ms in and 40 ms out, DC 120 ms and 45 ms.
Cabinet space behind the machine is tight	Single solenoid AC build measures 182 mm overall; DC 215 mm.
Controls need proof the spool really moved	Option 57 spool position switch on single solenoid valves, or S9 monitoring function.

Case 3 · Hydraulic power unit and test stand

The return line carries real back-pressure through a shared filter	Tank port takes 210 bar on DC builds, 120 bar on AC. DC buys you 90 bar more headroom.
Manifold has to stay compact	Body is designed to sit with SystemStak sandwich valves and standard subplates, cutting fittings out of the block.
One stand, several export voltages	Twelve coil rating codes from 12 V DC to 240 V AC, in five coil housings.
Steps have to be switched in a fixed order	Seventeen spool codes plus left-hand builds, covering spring offset, spring centred and detent.

Technical data

Parameter	Specification	Note
Mounting interface	ISO 4401 Size 05	Same as ANSI/B93.7M-D05, CETOP 5, NG10, NFPA D05
Construction	Four-port, four-land spool, gasket mounted	Four lands give progressive metering and smoother response
Max. pressure, P / A / B	315 bar (4,500 psi)	Set by the V in the model code
Max. pressure, tank port	210 bar DC / 120 bar AC	3,000 psi against 1,750 psi
Flow	From the spool performance curve	Curves plotted to 120 L/min (30 US gpm)
Relative duty factor	Continuous, ED = 100%	Suitable for long holding phases
Solenoid type	Wet armature, AC or DC	Both families fit the same body
Electrical connection	ISO 4400 (DIN 43650)	Plug can be indexed in 90 degree steps
Response, 2C spool	AC 30 / 40 ms, DC 120 / 45 ms	Energise / de-energise at 40 L/min and 175 bar, full rated volts
Coil winding / encapsulation	Class H / Class F	Holds in down to 90% rated voltage
Protection	IEC 144 class IP65	With the plug correctly fitted and the interface seal in place
Ambient temperature	−20 °C to 70 °C	Upper limit falls to 50 °C on 50 Hz AC and 40 °C on 60 Hz AC
Manual override	Plain, H water-resistant, W twist and lock, Z none	H is usual for outdoor and mobile duty
Overall length	AC 182 / 246 mm, DC 215 / 312 mm	Single / double solenoid
Mass	4.0 to 6.3 kg	Single AC lightest, double DC heaviest
Reliability	MTTFd 150 years	To ISO 13849
Service parts	Seal kit 459057 (AC) / 459058 (DC)	Orifice plug kit 459065 for shift-speed tuning

Six advantages worth paying for

An interface you will not have to redrill

Size 05 is the pattern the whole industry uses. A manifold cut for CETOP 5, NG10, NFPA D05 or ANSI/B93.7M-D05 takes this valve as it arrives.

Two electrical families on one body

AC and DC wet-armature coils share the same valve, so a change in supply voltage never turns into a change of manifold or a new drawing.

Shift speed you can dial down

DC models take an orifice plug in the pilot port. Four orifice sizes let you trade response time for a quieter, gentler cycle without touching the rest of the design.

Coils that tolerate a sagging supply

Class H winding keeps holding at 90 per cent of rated voltage, and the DC builds accept 70 °C ambient where a 50 Hz AC coil would be at its limit.

A spool list that covers the circuit

Seventeen spool codes plus left-hand builds, in spring offset, spring centred and detent versions. You find the function instead of compromising on it.

Parts you can buy, not just valves

Seal kits by build, orifice plug kits and individual coils are all orderable line items. A repairable valve stays in service longer than a disposable one.

Eight questions buyers ask before a first order

Which machines does a size 05 valve usually serve?

Anywhere a flow has to be switched rather than throttled. Injection moulding machines, machining centres, hydraulic power units and test stands are the industrial core; concrete pumps, excavators, mining plant and marine decks are the mobile side.

Will it suit an injection moulding machine clamp circuit?

It is one of the most common fits. The clamp phase asks for a long hold with the coil energised, which the ED 100% continuous rating covers directly, and the DC build's adjustable changeover keeps the shift soft so the mould is not shocked.

Can it be used outdoors or on mobile equipment?

Yes. IP65 protection applies once the ISO 4400 plug is correctly fitted, the ambient floor is −20 °C, and the H water-resistant manual override exists for exactly this duty. DC builds carry the wider ambient ceiling at 70 °C.

Is this a proportional valve?

No. DG4V-5 is an on-off directional valve: the spool goes to a position and stops there. If your machine needs flow that follows a command signal, you want a proportional valve from a different family - tell us the ramp profile and we will point you at the right one instead of selling you this.

How does it mount, and what keeps it sealed?

It bolts down onto a subplate or manifold with the size 05 pattern, gasket mounted, with the interface seal between valve and panel. Fixing bolt centres are 71 mm on AC models and 70 mm on DC models. Ask us to quote the bolts and interface seals alongside the valve.

What separates the -20 design from the -22?

They are the two design lines of the same valve: -20 covers the AC builds and -22 the DC builds. It is why the seal kits are split the same way. Across design numbers 20 to 29 the installation dimensions stay identical, so a later design still fits an existing drawing.

Can this replace an older Vickers or Eaton DG4V-5 in the field?

The interface has not moved, so the manifold side is normally fine. What you must match is the model code: the spool function, spring arrangement, coil voltage rating and tank pressure rating all have to line up. Copy the code from the old nameplate and we will check it line by line before you order.

What should I check before ordering a spare for a running machine?

Four things: the full model code, which build the coil is (AC or DC, and the voltage), the ambient temperature at the valve position, and the actual back-pressure on the return line, because that is what decides whether the AC tank rating of 120 bar is enough. Send those and we will confirm the match rather than guess.

Send the nameplate code, the quantity and the destination port, and we will quote from stock or give you a lead time. If you are still at the design stage, send the working pressure, the flow and the machine duty instead.

Technical data reproduces the published figures for the DG4V-5-20/22 design, ISO 4401 Size 05 solenoid operated directional valve (Danfoss literature BC442274655179en). Values are rounded and typical and do not allow for tolerances; the nameplate on the delivered valve and the delivery documents are binding. Application descriptions are typical uses of this valve size, not named customer projects. DG4V, SystemStak and other marks belong to their respective owners and appear here only to identify fit and compatibility.

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