What Is a 5/2 Pneumatic Directional Valve
The notation «5/2» means: 5 ports and 2 positions (spool positions).
5 ports:
- P — supply (compressed air inlet)
- A — working outlet 1 (to cylinder bore side)
- B — working outlet 2 (to cylinder rod side)
- EA (R) — exhaust for port A
- EB (S) — exhaust for port B
2 positions:
- Position 1 (normal, coil de-energised) — air P→B, exhaust A→EA. Cylinder rod retracts.
- Position 2 (coil energised at DC 24V) — air P→A, exhaust B→EB. Cylinder rod extends.
Monostable (spring-return) design: when power is removed the spool automatically returns to its home position via the return spring — without a second control signal. This provides a defined safe position on emergency power loss.
Technical Specifications
| Parameter | Value |
|---|---|
| Part number | 4V310-08 DC24V (XCPC) |
| Valve type | 5/2 (five-port, two-position) |
| Control | Single solenoid, spring return (monostable) |
| Supply voltage | DC 24V (tolerance ±10%) |
| Coil power | 3.0 W |
| Port thread | G 1/4″ (P, A, B, EA, EB) |
| Working pressure | 0.15–0.8 MPa (1.5–8 bar) |
| Maximum pressure | 1.2 MPa (12 bar) |
| Effective flow area | 30 mm² (Cv = 1.68) |
| Switching time | 0.05 s (50 ms) |
| Maximum switching frequency | 5 Hz (5 cycles/s) |
| Operating temperature | +5 °C … +50 °C |
| Working medium | Compressed air, 40 µm filtration |
| Body material | Aluminium 6061 (CNC-machined) |
| Spool material | Polyoxymethylene (POM) |
| Seals | NBR (nitrile rubber) |
| Protection class | IP65 (DIN connector version) |
| Certifications | ISO 9001, CE, Bureau Veritas, SGS |
| Manufacturer | XCPC (China) |
💡 Expert tip: the valve requires a minimum supply pressure of 1.5 bar to operate. Below this threshold the spool may not shift — this is a design requirement of the pilot mechanism, not a fault. Maintain a stable supply pressure of at least 2 bar to ensure reliable switching under load variations in the system.
The 4V Series: Part Code and Size Range
Code breakdown — 4V310-08:
- 4V — XCPC five-port directional valve series
- 3 — body size (300 series; 200 series = smaller body for 6 mm tube)
- 1 — single solenoid (monostable; 2 = double solenoid)
- 0 — standard configuration
- 08 — port thread G 1/4″
| Part no. | Type | Control | Thread | Cv | Application |
|---|---|---|---|---|---|
| 4V210-08 | 5/2 | Monostable | G 1/4″ | ≈0.8 | Small cylinders, up to Ø25 mm |
| 4V310-08 (this model) | 5/2 | Monostable | G 1/4″ | 1.68 | Cylinders Ø25–63 mm |
| 4V320-08 | 5/2 | Bistable | G 1/4″ | 1.68 | Where position must be held on power loss |
| 4V410-15 | 5/2 | Monostable | G 1/2″ | ≈3.5 | Large cylinders, Ø63–125 mm |
Direct Equivalents for XCPC 4V310-08 DC24V
| Brand | Equivalent part no. | Type | Thread | Interchangeability |
|---|---|---|---|---|
| XCPC (original) | 4V310-08 DC24V | 5/2 | G 1/4″ | — |
| AirTAC | 4V310-08 DC24V | 5/2 | G 1/4″ | Full |
| Festo | MFH-5/2-1/4 or VSVA-B-M52-MZD-A1-1R5 | 5/2 | G 1/4″ | By mounting dimensions |
| SMC | VF3130-5G-02 | 5/2 | G 1/4″ | By mounting dimensions |
| CKD | 4F310-08-DC24V | 5/2 | G 1/4″ | By mounting dimensions |
| Camozzi | 358-015 / 358-115 | 5/2 | G 1/4″ | By mounting dimensions |
⚠️ Important when substituting an equivalent: ISO 5599-1 mounting dimension compliance guarantees the valve will fit the same sub-base. However, the connector type (DIN or M12), coil polarity and signal form require separate verification when switching between brands.
Applications
Automated production lines
- Actuating double-acting cylinders Ø25–63 mm: grippers, clamps, positioners
- Actuating pneumatic rotary actuators on conveyors
- Lifting and sorting systems
Woodworking and metalworking
- Actuating pneumatic clamping fixtures on machining centres
- Driving pressure rollers and guide assemblies
Packaging and food industry
- Actuating tray conveyors and diverter flaps
- Driving dosing pistons
Valve island assemblies
- Sub-base (Manifold) mounting for the 300 series: up to 16 valves in a block with shared P supply and EA/EB exhausts
Key Advantages of the XCPC 4V310-08
- Aluminium 6061 body with CNC machining. Service life 1.5–2× longer than standard market equivalents — achieved through precision machining of the spool bore surfaces.
- POM spool + NBR seals. Smooth stroke without sticking at frequencies up to 5 Hz.
- Low coil power — 3.0 W. Minimal heat build-up during sustained energisation. Critical for densely packed control cabinets with dozens of valves.
- IP65 with DIN connector. Dust and spray protection for applications outside sealed enclosures: open conveyors, food production and woodworking environments.
- Bureau Veritas and SGS certification. The declared service life is confirmed by independent testing to ISO 9001, not a marketing figure.
Why Acvatron SRL
In Stock at the Chișinău Warehouse
XCPC 4V310-08 DC24V directional valves are permanently in stock at acvatron.md. Collect on the day of payment.
Full XCPC Range
Replacement coils (DC 24V, AC 220V), Manifold sub-bases, exhaust silencers, SDA/DNC pneumatic cylinders — complete XCPC pneumatics from one source.
Engineering Selection
Not sure which 4V series size you need for your cylinders? Give us the bore diameter and stroke — we select the correct model (4V210/4V310/4V410) and control scheme (monostable/bistable).
Documents for Legal Entities
Invoice and contract. CE and ISO 9001 certificates on request.
Expert Opinion
“In 15 years working with pneumatics I have seen hundreds of failures caused by poor-quality spool casting. XCPC solved this problem by introducing machining on American and Japanese CNC centres. The 4V310-08 DC24V is the Kalashnikov of the pneumatics world: simple, reliable and predictable. The Bureau Veritas and SGS certificates confirm that the declared service life is not a marketing trick but the result of rigorous quality control under ISO 9001.”
Vitali Bolucevschi, Chief Engineer at Acvatron SRL, 15 years in the industry
FAQ
❓ What electrical connection type does the 4V310-08 have?
Two options: DIN connector (IP65, recommended for industrial use) or lead wires. The connector version allows the coil to be disconnected without cutting wires — convenient for maintenance. Specify the version at the time of ordering.
❓ Can multiple 4V310-08 valves be mounted on a single sub-base?
Yes. Sub-base manifolds for the 300 series allow up to 16 valves to be grouped in a single block with a shared P supply and EA/EB exhaust ports. This greatly simplifies pipe routing and reduces the number of connections.
❓ What is the difference between the 4V310-08 and the 4V320-08?
The 4V310-08 is monostable (spring return on de-energisation). The 4V320-08 is bistable (holds its last position on power loss). The choice depends on the safety requirements for emergency power failure in your application.
❓ Does the 4V310-08 require lubricated air?
No, it is not mandatory. NBR seals and POM spool operate without forced lubrication. Mandatory requirements: 40 µm filtration and a pressure dew point no higher than +10 °C to prevent condensate in the coil.
