Introduction

The 2PC Ball Valve is a two-piece ball valve that achieves rapid shut-off and opening of pipelines through ball rotation. It is mainly used for medium switching control in industrial pipeline systems.

Specification

Parameter	Specification / Description
Model	P20C or OEM
Construction	2 pc screwed body
Size	3/8"–8" (DN10–DN200)
Rating	PN16–40 / 1000 WOG / PN63 / 1000 psi
Materials	ASTM A216 WCB / ASTM A351 CF8 / ASTM A351 CF8M
Working Temperature	-40 ℃ to +230 ℃
Design Standard	ANSI B16.34 / ASME VIII Div. 1 / EN 12516-1
Face-to-Face	ASME B16.10
Stem Design	Anti blow-out
Mounting Pad for Actuator	ISO 5211 (on request)
Tightness Class	API 598 Cl.A / ASME B16.104 / FCI 70-2 Cl.VI / GOST 54808 Cl.A / EN 12266-1 / ISO 5208

Features

Threaded Structure Reduces Leakage: The 2PC threaded structure has only two sealing surfaces, with the entire body bearing pressure, reducing the risk of leakage to two ports.

Excellent Sealing Performance: Compliant with API 598 Class A, the ball and seat elastically fit together, achieving zero bubble leakage even after multiple opening and closing tests.

Standardized Actuator Interface: The ISO 5211 interface (optional) standardizes the hole spacing and connection dimensions, allowing direct actuator installation without modification.

Applications

Petrochemical Systems: Used for media shut-off and diversion control in process pipelines, providing reliable switching functionality between raw material transport and reaction units, reducing the risk of system crossflow.

Water Treatment Systems: Used for the opening and closing control of raw water, filtration, and discharge pipelines, achieving rapid isolation between different treatment units, facilitating maintenance and process changeover.

Compressed Air Systems: Used for the control of main and branch air supply lines, achieving rapid shut-off at the equipment's air supply end, reducing the impact of pressure relief and backflow on system stability.

General Industrial Piping: Used for the on/off control of general liquid and gas transport pipelines, providing basic fluid management functions in equipment interfaces and branch lines.

FAQ

Q: How to determine if a 2PC (two-piece valve assembly) structure is suitable for the current operating conditions?

A: When the system primarily uses on/off control, maintenance frequency is low, and frequent disassembly of the valve body is not required, the 2PC structure is generally more suitable because it reduces the number of connecting sealing surfaces and lowers leakage risk points.

Q: Is flow direction always a consideration during installation?

A: Ball valves themselves do not have strict unidirectional flow restrictions. However, in conditions with actuators or specific media (containing particles or prone to crystallization), it is recommended to select a reasonable flow direction in conjunction with the piping design to reduce concentrated valve seat wear.

Q: How to perform maintenance and inspection after long-term use?

A: Maintenance typically focuses on valve seat wear and changes in sealing performance. This can be checked by conducting an online shut-off test or disassembling one side of the pipeline to inspect the contact between the ball surface and the valve seat. If necessary, replace the seals to restore sealing capability.

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2 Pc Ball Valve

Introduction

Specification

Features

Applications

FAQ