Specification

NEWWAY API High Quality Inverted Pressure Balanced Lubricated Plug Valve

I. Product Overview

NEWWAY back pressure balanced lubricated plug valves are high-performance shut-off valves designed to API 599 and API 6D standards, featuring a back pressure balanced structure and forced lubrication system for reliable sealing and low-torque operation under high-pressure conditions. Constructed with stainless steel and other corrosion-resistant materials, these valves suit industrial pipelines handling water, oil, gas, and more, particularly excelling in high-pressure applications within oil & gas, chemical, and power industries.

II. Key Technical Parameters

Technical Specifications

Design Standards: API 599, API 6D (American Petroleum Institute)

Connection Standards: Flanged ends per ASME B16.5 (Class 150~Class 2500), face-to-face dimensions per ASME B16.10

Pressure Classes: PN16~PN100 (Class 150~Class 600)

Temperature Range: -20℃~180℃ (standard), customizable to -40℃~300℃

Bore Sizes: DN15~DN200 (1/2″~8″)

Material Configuration

Body/Bonnet: WCB cast steel, 304/316 stainless steel, CF8M (optional)

Plug: Forged stainless steel (surface hardened, HV≥250)

Sealing Surfaces: Metal hard seal + PTFE auxiliary seal, grease passage in brass

Lubrication System: Dedicated high-pressure grease injector, compatible with NLGI 2# lithium-based grease

Performance Parameters

Seal Testing: Per API 598, shell test at 1.5x rated pressure, seal test at 1.1x rated pressure

Leakage Rate: Bubble-tight seal (API 598 Class VI), bi-directional zero leakage

Operating Torque: ≤150N·m for DN100 (manual operation), compatible with electric/pneumatic actuators