Description
RNVA and RNVT: Innovative Cable Accessories with Exhaust Valves
RNVA Cable Connector with Exhaust Valve
The RNVA is a uniquely designed cable connector equipped with an exhaust valve. In various industrial and electrical applications, cables are often installed in environments where pressure differentials can occur.
The exhaust valve on the RNVA serves a crucial function. It effectively balances the internal and external pressure around the cable.
This is particularly important in situations such as when cables are laid underground or in sealed enclosures.
Without proper pressure regulation, the build – up of internal pressure due to temperature changes or gas generation could lead to cable sheath damage or even affect the performance of the electrical components connected to the cables.
The RNVA, with its intelligent exhaust valve design, ensures a stable and safe operating environment for the cables, extending their lifespan and maintaining reliable electrical connections.
RNVT Plugging Screw with Exhaust Valve
The RNVT is a specialized plugging screw featuring an exhaust valve. In cable systems, there are times when a sealed connection needs to be maintained while also allowing for the release of excess pressure.
The RNVT comes into play here. When used to close off cable entry points or in areas where a tight seal is required, the exhaust valve on the RNVT enables the controlled release of pressure. This is beneficial in applications like cable glands in areas with potential gas accumulation, such as in chemical plants or mines. By preventing pressure build – up, the RNVT helps to enhance the safety and integrity of the cable installation, protecting against potential leaks or ruptures that could be caused by excessive pressure.
RNVA RNVT
Plastic Breathable Gland
| (M) |
|
Unit：mm |
| Code |
Thread Size |
Cable Range |
Thread O. D. G |
Thread Length L |
Spanner Size A & E |
Air permeablity
(ml/min)P:7kp |
Qty/bag |
| RNVA-M12 |
M12x1.5 |
4.5~8 |
12 |
9 |
18/19 |
180 |
100 |
| RNVA-M16 |
M16x1.5 |
6~10 |
16 |
15 |
22/22 |
180 |
100 |
| RNVA-M20 |
M20x1.5 |
9~14 |
20 |
15 |
27/27 |
180 |
100 |
| RNVA-M25 |
M25x1.5 |
13~18 |
25 |
15 |
33/33 |
180 |
100 |
| RNVA-M32 |
M32x1.5 |
18~25 |
32 |
15 |
41/42 |
180 |
20 |
| (PG) |
|
|
|
|
|
|
|
| Code |
Thread Size |
Thread O. D. G |
Thread Length L |
Cover Dimensions D
(mm) |
Air permeablity
(ml/min)P:7kp |
Qty/bag |
| RNVT-PG7 |
PG7 |
12.5 |
9 |
16 |
180 |
100 |
| RNVT-PG9 |
PG9 |
15.2 |
9 |
19 |
180 |
100 |
| RNVT-PG11 |
PG11 |
18.6 |
9 |
22 |
180 |
100 |
| RNVT-PG13.5 |
PG13.5 |
20.4 |
11 |
24 |
340 |
100 |
| RNVT-PG16 |
PG16 |
22.5 |
11 |
27 |
340 |
100 |
| RNVT-PG21 |
PG21 |
28.3 |
11 |
33 |
470 |
100 |
| (RNVT) |
|
|
|
|
|
|
| Code |
Thread Size |
Thread O. D. G |
Thread Length L |
Cover Dimensions D
(mm) |
Air permeablity
(ml/min)P:7kp |
Qty/bag |
| RNVT-M12 |
M12x1.5 |
12 |
9 |
16 |
180 |
100 |
| RNVT-M16 |
M16x1.5 |
16 |
9 |
19 |
180 |
100 |
| RNVT-M18 |
M18x1.5 |
18 |
9 |
22 |
180 |
100 |
| RNVT-M20 |
M20x1.5 |
20 |
11 |
25 |
340 |
100 |
| RNVT-M22 |
M22x1.5 |
22 |
11 |
27 |
340 |
100 |
| RNVT-M25 |
M25x1.5 |
25 |
11 |
30 |
470 |
100 |
Vented cable glands with breather valves are specialized components designed to connect cables, balance internal/external pressure, and protect against environmental contaminants. The built-in breather valve enables controlled air exchange between sealed spaces while blocking water, dust, and debris, addressing challenges like thermal expansion, condensation, and pressure buildup in enclosed systems.
-
Intelligent Pressure Regulation System
- Automatic Airflow Control: Equipped with a Gore-Tex waterproof breathable membrane (pore size ≤0.1μm), the valve balances pressure differences caused by temperature fluctuations (-40°C to +85°C), preventing sheath expansion damage or seal failure.
- Condensation Prevention: Maintains a steady airflow (30–100L/min) to reduce humidity, keeping the dew point ≤20°C and protecting cable insulation from moisture-induced corrosion.
-
Dual Protection Design
- Dust & Water Resistance: Achieves IP65/IP67 ratings (IEC 60529) to block particles ≥0.3μm and withstand water jets (IP65) or temporary submersion (IP67, 1m depth for 30 mins).
- Durable Materials: Constructed from nylon PA66 (UL94V-2 flame retardant) or 304 stainless steel (500+ hours salt spray resistance), suitable for harsh environments like industrial corrosion or UV-exposed outdoors.
-
Easy Installation & Compatibility
- Universal Fit: Supports Metric (M), PG (Panzer), and NPT threads, fitting 6–50mm cable diameters and 90% of standard equipment interfaces.
- Low Maintenance: Integrated breather valve requires no filter replacement, cutting operational costs by 30%.
| Industry |
Use Case |
Benefits |
| Electric Vehicles |
Battery pack cable connections, charging gun wiring |
Balances thermal pressure during charging/discharging, prevents electrolyte vapor corrosion |
| Solar & Energy Storage |
Inverter and junction box cable sealing |
Blocks dust/rain while releasing heat from solar panels, enhancing system longevity |
| Industrial Automation |
Robot control cabinets, servo motor wiring |
Withstands oil/coolant exposure; relieves pressure from motor heat buildup |
| Outdoor Equipment |
LED street lighting, security camera power cables |
Resists heavy rain and typhoons, eliminates condensation in enclosures |
| Rail Transportation |
High-speed train pantograph cables, onboard control systems |
Adapts to rapid pressure changes during operation, meets EN 45545-2 fire safety standards |
- Valve Type: Bidirectional (standard) / Unidirectional (optional for pressure relief)
- Protection Rating: IP65 (water jet proof) / IP67 (submersible)
- Temperature Range: Nylon: -40°C to +100°C; Stainless Steel: -50°C to +200°C
- Flame Rating: Nylon (UL94V-2), Stainless Steel (V-0 optional)
- Certifications: CE, RoHS, SGS-tested IP67 compliance
- Customized Solutions: Tailored airflow rates (e.g., 50L/min for EV battery packs) and materials for niche applications.
- Rigorous Testing: Passed 1,000-hour UV aging (QUV-A) and extreme climate trials (Turpan high-temperature, Tibetan low-pressure environments).
- End-to-End Support: Free sample testing, cable compatibility guides, and OEM/ODM services (MOQ 500 units).
- Environment: Choose IP67 stainless steel for wet environments, UL94V-2 nylon for high-temperature flame resistance.
- Pressure Needs: Bidirectional valves for thermal cycling; unidirectional for one-way pressure relief (e.g., fast-charging batteries).
- Interface: Match thread type (M20×1.5/PG16/NPT 1/2″) and cable diameter (±1mm tolerance).
Optimize Your Sealed Systems Today: Download our technical datasheet or contact us for a vented cable gland solution tailored to your industry’s needs.
- Primary Keywords: vented cable gland, cable gland with breather valve, IP67 vented cable connector
- Long-Tail Keywords: EV battery vented cable gland, solar junction box breather valve, industrial pressure balance cable connector
- Technical Terms: Gore-Tex membrane, UL94V-2 flame retardant, IEC 60529 compliance
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