Extended Stem Plug Valve, API 599, A890 4A, 2 IN, 150 LB

Key Specifications / Features

The Extended Stem Plug Valve, Sleeve Type and Soft Sealing, is an API 599 standard valve designed for enhanced performance in fluid control systems. Featuring a robust ASTM A890 4A body, this 1-1/2 inch valve (DN40) offers Class 150 LB pressure rating and PN20 compatibility, with RF ends for easy installation. The extended stem design facilitates operation in applications requiring added clearance.

The unique 360-degree metal lip protection fixed card ensures there are no cavities for medium accumulation. The metal lip in the rotary plug provides a self-cleaning effect, making the valve suitable for sticky or scaling-prone conditions. It supports two-way flow and offers convenient installation. Sleeve-type soft-sealing plug valves are commonly used in corrosive, highly toxic, and hazardous media, as well as in environments where leakage is strictly prohibited or where the valve material must not contaminate the medium. The body material can be carbon steel, alloy steel, or stainless steel, depending on the working medium.

Technical Specification

» Nominal Diameter: NPS 1/2-14 Inch (DN15-DN350)

» Design Temperature: -46°C to 120°C

» Design Pressure: Class 150-900 LB (PN20-PN160)

» Materials: ASTM A216 WCB, WCC, A352 LCB, LCC, A351 CF8, CF8M, CF3M, CF8C, CN3MN, CN7M, A890 4A(CD3MN), 5A(CE3MN), 6A(CD3MWCuN), ASTM B148 C95800, C95500

» Design Standard: API 6D, API 599

» Face to Face: ASME B16.10

» Connection End: RF, RTJ, BW

» Test Standard: API 598, ISO 5208

» Operation: Lever, worm gear, electric, pneumatic

» Application: Petrochemical, chemical, natural gas, LPG, gas, HVAC, food, and pharmaceutical industries

» Function 1: Optional bore patterns: Venturi, Regular, Short, Standard

» Function 2: Metal-to-metal seated design

» Function 3: Injection grease-sealed design (for stem and seats)

» Function 4: Fire-safe

» Function 5: Integral seat ring

Material for Main Parts