20″-150LB 3-Piece Trunnion Mounted Ball Valve

Description

Technical Data Sheet

3-Piece Trunnion Mounted Ball Valve

Project/Item: 3-Piece Fixed Ball Valve
Valve Size: 20 inches (20″)
Pressure Rating: 150LB (Class 150)

1. General Information

2. Main Technical Parameters & Performance

3. Main Material Specifications

Based on WCB Body + 316 Trim requirements:

4. Main Dimensions (For 20″ Class 150)

Typical dimensions per ASME standards. Variations may occur between manufacturers.

5. Design Features & Requirements

1. 3-Piece Bolted Body: The body consists of three parts (Body + 2 End Caps) bolted together. This allows for easy maintenance (seat/ball replacement) without removing the entire valve from the pipeline.
2. Trunnion Mounted Ball: The ball is fixed and supported by upper and lower stems/bearings. This design is ideal for 20″ large bore applications, reducing operating torque and ensuring stable performance under high differential pressure.
3. Double Piston Effect (DPE) Seats: Standard seats provide bidirectional sealing. The valve typically features automatic cavity pressure relief (the upstream seat acts as a piston, allowing overpressure in the body cavity to vent into the pipeline).
4. Emergency Sealant Injection: The valve body is equipped with sealant injection fittings. In case of seat damage, sealant can be injected to temporarily restore sealing.
5. Anti-Static Device: A spring-loaded plunger/ball ensures electrical continuity between the ball, stem, and body to prevent static spark buildup.
6. Secondary Metal Seal: In the event the soft seat is destroyed by fire, the ball will contact the metal seat support, providing a metal-to-metal seal (Fire Safe feature).

Note:

• This data sheet is based on standard ASME/API specifications.
• The gearbox dimensions (height, handwheel size) and overall weight may vary depending on the manufacturer and gearbox model. Please refer to the final manufacturer’s drawing for certified dimensions.

GUATANTEE:

SAVVY VALVES is committed to delivering exceptional product quality and worry-free after-sales service. Our valves are guaranteed to provide a minimum service life of 12 months, during which we will supply all necessary spare parts and detailed maintenance instructions free of charge. Within the warranty period, if any non-human-induced damage occurs, we will replace components at no cost and provide professional technical support. After the warranty expires, customers only need to pay for the cost of spare parts, while still benefiting from discounted maintenance services. Our goal is to help clients reduce operational costs and enhance production efficiency through reliable quality and comprehensive after-sales support. Whether for technical inquiries or maintenance needs, our expert team will respond promptly to ensure your valve system maintains optimal performance at all times.