Understanding OMS Valves: A Comprehensive Guide
OMS valves, or Omegat OMS-S type coaxial seals, are a specialized type of seal designed for high-performance applications. These seals are particularly well-suited for large diameter and heavy-duty conditions, offering a range of benefits that make them a preferred choice in various industries.
Key Features of OMS Valves
OMS valves are a two-piece combination seal, consisting of a PTFE (Teflon) non-standard cross-section sliding ring and a rubber ring that serves as a pre-loading element. This unique design provides several key features:
| Feature | Description |
|---|---|
| High Pressure Resistance | OMS valves are designed to withstand high pressure, making them ideal for heavy-duty applications. |
| Excellent Anti-Extrusion Properties | These seals have excellent resistance to extrusion, ensuring a reliable seal even under extreme pressure. |
| Anti-Twist Design | The design of OMS valves prevents twisting during installation, ensuring a proper fit and optimal performance. |
| High Contact Pressure | The special cross-section design of the rubber ring provides high contact pressure, enhancing the seal’s effectiveness. |
| High Wear Resistance | OMS valves are highly wear-resistant, ensuring long-lasting performance and reduced maintenance requirements. |
| Low Friction | These seals offer low friction and no sticking or slipping, ensuring smooth operation and reduced wear on the mating surfaces. |
Applications of OMS Valves
OMS valves are widely used in various industries, including:
- Injection molding machines
- Steel industry
- Marine hydraulic equipment
- Metallurgical equipment
- Press machines
- Control equipment
- Large hydraulic cylinders
Materials Used in OMS Valves
The materials used in OMS valves are carefully selected to ensure optimal performance and durability. The PTFE sliding ring is available in different materials and colors, including:
| Material Code | Color |
|---|---|
| PTFE with copper powder | B602 – Brown |
| PTFE with glass fiber MoS2 | GM201 – Grey |
| PTFE with carbon fiber | C104 – Dark grey |
The rubber ring is made of NBR (Nitrile Rubber) with a hardness of 80 Shore A (code B246).
Operating Conditions
OMS valves are suitable for a wide range of operating conditions, including various hydraulic oils, fluids, and water. The temperature range for different fluids is as follows:
| Fluid | Temperature Range (掳C) |
|---|---|
| Hydraulic oil HL, HLP | 30 … 100 |
| HFA fluid | 5 … 60 |
| HFB fluid | 5 … 60 |
| HFC fluid | 30 … 60 |
| HFD fluid | Not specified |
| Water |