High-Pressure 3-Way Ball Valves
High‑pressure 3‑way ball valves are divided into L‑type and T‑type. Imported high‑pressure 3‑way ball valves are mainly used for the circulation and shut‑off of oil in pipelines. They adopt forged valve bodies, embedded downstream valve seats, and valve stems with carburizing and hardening treatment. According to different material selections, they can meet the requirements of one‑way or two‑way sealing.
The imported high‑pressure 3‑way ball valve achieves directional control through a 90‑degree rotation, or realizes directional control, flow splitting and merging through a 180‑degree rotation. High‑pressure 3‑way ball valves are widely used in high‑pressure pipelines such as gas stations and tank trucks. Their connection forms include internal thread (G/NPT), welding, ferrule, etc.
The pneumatic piston actuator adopts low‑friction materials, and the inner and outer surfaces of the cylinder are subjected to hard anodizing anti‑corrosion treatment, which greatly improves the service life of the cylinder.
Product Features
• Compact structure, quick opening and closing, unobstructed flow channel, and small fluid resistance;
• Sealing performance: Achieves leak‑free sealing by utilizing the elastic deformation of the four‑sided valve seat materials (PTFE, imported nylon, MTU);
• Multi‑purpose valve: Any port can be used as an inlet without leakage; the 3‑way port can be made into L‑type or T‑type;
• Easy maintenance: After the system is depressurized, inspection and maintenance can be carried out without removing the entire valve body;
• Pneumatic device or electric device can be installed.
Technical Parameters
| Parameter Name | Specifications |
| Nominal Diameter (DN) | DN3‑50 |
| Pressure | 1.6Mpa‑50Mpa |
| Applicable Temperature Range | -40～232℃～350℃ |
| Material | Forged Steel, Stainless Steel 304, 316, 316L |
| Connection Type | G, NPT, BSPT, BSP, DIN259/2999 |
| Structure | T‑type and L‑type |
| Applicable Media | High‑Pressure Water, Steam, Gas, Oil Products, etc. |
Material Selection Parameters
4.1 Body, Connector, Stem and Ball Material
| Material Code | Material | Application & Working Condition |
| 1 | 9SMnPb28K Carbon Steel | General hydraulic systems without special material requirements; Temperature range: -40°C ~ +200°C |
| 3 | St52‑3 Forged Steel | General hydraulic systems with special material requirements, large‑size carbon steel ball valves; Temperature range: -40°C ~ +200°C |
| 4 | 316Ti Stainless Steel | Specialized for chemical and power industries with high anti‑corrosion requirements; Temperature range: -60°C ~ +400°C |
4.2 Ball Seat Seal Material
| Material Code | Material | Application & Working Condition |
| 2 | POM (Polyoxymethylene) | High pressure resistance, suitable for high‑pressure hydraulic systems and non‑corrosive media; Temperature range: -30°C ~ +100°C; Max working pressure: 800bar |
| 4 | PTFE (Polytetrafluoroethylene) | Excellent corrosion resistance and wide temperature adaptability, applicable for various media; Temperature range: -60°C ~ +250°C; Max working pressure: 120bar |
| 6 | PEEK (Polyether Ether Ketone) | Good corrosion resistance, compatible with most chemical media; Temperature range: -50°C ~ +200°C; Pressure resistance drops to 100bar at 200°C; Max working pressure: 800bar |
4.3 O‑Ring Material for Stem & Connector
| Material Code | Material | Application & Working Condition |
| 3 | NBR (Nitrile Butadiene Rubber) | General hydraulic systems, non‑corrosive media; Temperature range: -35°C ~ +100°C; Max working pressure: 800bar |
| 5 | FPM (Fluorine Rubber) | Good chemical compatibility, complementary to EPDM; Temperature range: -25°C ~ +200°C; Max working pressure: 800bar |
| 6 | EPDM (Ethylene Propylene Diene Monomer) | Suitable for ammonia, acetic acid and methanol; not resistant to mineral oil; Temperature range: -50°C ~ +150°C; Max working pressure: 500bar |
| 7 | KALREZ | Superior corrosion resistance for most chemical media, high cost; Temperature range: -15°C ~ +315°C; Max working pressure: 800bar |
