PN16
BURKERT 332737 is a Type 6014 direct-acting 3/2-way plunger solenoid valve configured for normally closed (Circuit Function C) operation. Built with a brass body, NPT 1/4 female threaded ports, and an integrated 2.0 mm orifice, the valve delivers direct fluid shut-off and venting from 0 bar up to 10 bar for neutral gases and liquids. The valve core guide tube and stopper are welded together to withstand high operating pressures and provide long-term leak tightness under continuous industrial duty cycles.
Key Technical Characteristics
- Direct-acting compact plunger valve mechanism operating from 0 bar without minimum differential pressure
- Core guide tube and stopper welded together to increase pressure resistance and external leak tightness
- Vibration-proof, bolted solenoid coil system rated for 100% continuous operation (100% ED)
- Standard brass valve body with NPT 1/4 process connections and FKM seat and external seals
- Enclosed DIN EN 175301-803 Form A cable connector delivering IP65 environmental protection
- UL Listed certification under standard UL 429 for electrically operated valves
Circuit Function
BURKERT 332737 is configured with Circuit Function C (CF C), which operates as a direct-acting 3/2-way valve in normally closed state.
- De-energized state: Pressure port 1 (P/NC) is closed. Working outlet port 2 (A/OUT) is connected to exhaust port 3 (R/NO).
- Energized state: Pressure port 1 (P) opens to working port 2 (A), while exhaust port 3 (R) is shut off.
| Function Code | Symbol Description | De-energized State | Flow Direction |
|---|---|---|---|
| CF C | 3/2-way solenoid valve, direct-acting | Normally closed | Inlet 1 (P) shut; Outlet 2 (A) vents to 3 (R) |
| CF D | 3/2-way solenoid valve, direct-acting | Normally open | Inlet 1 (P) open to Outlet 2 (B); Exhaust 3 (R) shut |
| CF T | 3/2-way solenoid valve, direct-acting | Universal / optional flow | Universal flow distribution, normally closed |
Technical Specifications
| Parameter | Technical Value |
|---|---|
| Model Identifier (SKU) | 332737 |
| Valve Series | Type 6014 |
| Actuation Type | Direct-acting plunger valve |
| Circuit Function | C (Normally closed) |
| Port Connection | NPT 1/4 female thread |
| Orifice Size (DN) | 2.0 mm (5/64 inch) |
| Flow Rate Kv (Water) | 0.11 m³/h |
| Flow Rate QNn (Air) | 120 l/min |
| Operating Pressure Range | 0.00 to 10.00 bar (0 to 145 psi) |
| Permissible Fluid Media | Technical vacuum, neutral gases and liquids (compressed air, water, hydraulic oil) |
| Fluid Viscosity | Max. 21 mm²/s |
| Fluid Temperature Range | -10 °C to +120 °C (14 °F to 248 °F) |
| Ambient Temperature Range | -10 °C to +55 °C (14 °F to 131 °F) |
| Nominal Operating Voltage | 24 V DC (±10% tolerance) |
| Power Consumption | 8 W DC |
| Duty Cycle | 100% ED continuous rating |
| Opening Response Time | 10 to 15 ms (measured at +20 °C, 6 bar at valve outlet) |
| Closing Response Time | 15 to 20 ms (measured at +20 °C, 6 bar at valve outlet) |
| Body Material | Brass |
| Seal Material | FKM (Fluor rubber) |
| Manual Override | Not present (closed design) |
| Electrical Connection | DIN EN 175301-803 Form A plug pattern (cable plug enclosed) |
| Ingress Protection | IP65 (with cable plug correctly mounted) |
| Certification | UL Listed (UL 429) |
Materials of Construction
| Position | Element | Material Description |
|---|---|---|
| 1 | Stopper | Stainless steel 1.4105 / AISI 430F |
| 2 | Shading ring | Copper (Cu, brass body execution) |
| 3 | Plunger upper seal | FKM (Fluor rubber) |
| 4 | Return spring | Stainless steel 1.4310 / AISI 301 |
| 5 | Magnetic core (armature) | Stainless steel 1.4105 / AISI 430F |
| 6 | Core guide tube | Stainless steel 1.4303 / AISI 305/308 |
| 7 | O-ring | FKM (Fluor rubber) |
| 8 | Plunger lower seal | FKM (Fluor rubber) |
| 9 | Valve body | Brass |
| 10 | Body spring | Stainless steel 1.4310 / AISI 301 |
| 11 | Sub-base plate | Steel, surface thick-film passivated |
| 12 | Solenoid coil | Polyamide (PA) / Epoxy encapsulation |
| 13 | Top fastening nut | Steel, surface thick-film passivated |
Dimensions and Port Identification
Standard Threaded Body Dimensions
| Connection Type | Port Size A | Body Length B [mm] | Body Width C [mm] | Total Height D [mm] | Thread Depth G [mm] |
|---|---|---|---|---|---|
| Threaded port without manual override | G 1/8 | 32.0 | 20.8 | 32.6 | 8.0 |
| Threaded port without manual override | NPT 1/4 (G 1/4 body) | 46.0 | 26.8 | 49.0 | 12.0 |
Coil dimensions for standard 8 W DC execution: Width E = 32 mm (Coil size 5) or 40 mm (Coil size 6); Length F = 45 mm (Coil size 5) or 51 mm (Coil size 6).
Port Designation by Circuit Function
| Circuit Function | Port * (Inlet) | Port ** (Exhaust / Top) | Port *** (Working Port) |
|---|---|---|---|
| Function C (332737) | P | R | A |
| Function D | R | P | B |
| Function T | P | R | A |
| Function A (2/2-way NC) | P | Blanked off | A |
| Function B (2/2-way NO) | Blanked off | B | P |
Switching Performance and Pressure Limitations
Switching times are determined according to standard factory test procedures at +20 °C and 6 bar at the valve outlet. Opening corresponds to a pressure build-up from 0% to 90%, and closing corresponds to a pressure decay from 100% to 10%.
- Opening response time: 10 to 15 ms
- Closing response time: 15 to 20 ms
Circuit Function Pressure Dependency
Type 6014 valves utilize specific spring assemblies matched to each designated circuit function. If a valve manufactured for Circuit Function C is routed into another operating configuration, maximum permissible working pressures are altered:
- In Function C operation: 10 bar
- In Function A operation: 10 bar
- In Function B operation: 14 bar
- In Function D operation: 1 bar
- In Function T operation: 1 bar
UL Approval and Operating Limits
BURKERT 332737 is UL Listed under UL 429 for electrically operated general-purpose valves (USA and Canada). Permissible temperature and media combinations according to manufacturer UL compliance documentation:
| Media Group | Seal Material | Fluid Temperature Range | Ambient Temperature Range |
|---|---|---|---|
| Air, Inert Gas | FKM | -10 °C to +100 °C (+14 °F to +212 °F) | -10 °C to +55 °C (+14 °F to +131 °F) |
| Water | FKM | 0 °C to +100 °C (+32 °F to +212 °F) | 0 °C to +55 °C (+32 °F to +131 °F) |
| General Neutral Fluids (DC Coil) | FKM | -10 °C to +120 °C (+14 °F to +248 °F) | -10 °C to +55 °C (+14 °F to +131 °F) |
Installation Guidelines
- Valve mounting position is arbitrary, but vertical orientation with the solenoid actuator upright is recommended to minimize particle accumulation.
- Prior to installation, flush all process pipework thoroughly to eliminate thread shavings, seal residues, and particulate debris.
- Never use the solenoid coil body as a mechanical lever when threading the valve onto process piping.
Operating Precautions
- BURKERT 332737 does not have a manual override mechanism. Manual actuation cannot be performed during commissioning or system power outages.
- Do not exceed the nominal operating voltage of 24 V DC by more than ±10% to prevent thermal overload of the coil winding.
Electrical Installation and Accessories
The solenoid coil connects through contact pins conforming to DIN EN 175301-803 Form A. An enclosed mating cable plug provides IP65 sealing when tightened with its central screw.
- Pin 1: 0 V / Negative (-)
- Pin 2: +24 V DC Positive (+)
- Earth terminal: Protective earth conductor (PE), bonded to the valve core guide tube and internal metallic structural parts
Compatible System Accessories
- Type 2518 Cable Plug: Form A connector available with integrated LED status display and varistor suppression circuit (12–24 V AC/DC).
- Type 2509 Cable Plug: Form A connector without circuitry or with specialized industrial approvals.
- Type 1087 Timer: Form A solid-state cycling timer for intermittent valve operation.
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