Products

Product Overview

The  J61H/Y Series High Temperature & High Pressure Power Plant Globe Valve is a masterfully engineered heavy-duty valve designed strictly for the critical isolation and throttling services of modern power generation facilities. Fully meeting and exceeding industry design benchmarks such as E101, JB/T 3595, and DL/T 531, this premium manual globe valve serves as an indispensable asset for superheated main steam pipelines, high-pressure boiler feed water circuits, and thermal power station drain manifolds.

Unlike conventional bolted-bonnet valves that struggle under high thermal cycling, the VODEX J61H/Y utilizes an advanced pressure self-tightening (Pressure Seal) bonnet configuration. This structure harnesses the internal fluid force to continuously compress the sealing gasket, ensuring absolute zero fugitive emissions even under extreme supercritical pressures up to PN32.0 MPa.

Key Features & Technical Advantages

1. Supercritical Pressure Isolation Range

   Built to survive the most rigorous power sector requirements, covering nominal pressure classes from PN10.0 to PN32.0 MPa (PN100 to PN320) and an extensive sizing range of DN10 to DN300mm.

2. Advanced Power Plant Metallurgy

   To battle severe high-temperature creep and micro-structural degradation, the valve bodies are cast or forged in ultra-durable Chromium-Molybdenum Steel and Chromium-Molybdenum-Vanadium Steel, allowing safe continuous operation up to 540°C.

3. Stellite™ Hard-Faced Erosion Defense

   Both the conical valve seat and the disc throttling face are overlay-welded with a generous layer ($\ge\text{3mm}$) of premium cobalt-based hard alloy (Stellite™). This configuration ensures peerless resilience against severe high-velocity steam erosion, cavitation, and thermal wire-drawing.

4. Integral Structural Toughness

   The robust body boasts optimized flow geometry to maximize the flow coefficient ($Cv$) while reducing internal turbulence. Full-penetration butt-welded ends conforming to ASME B16.25 and GB 12224 ensure a seamless, permanent leak-free integration into the high-pressure steam loop.

5. Precision Grinded Nitrided Stem

   The valve stem undergoes full-length precision grinding and surface nitriding treatment. This maximizes surface hardness, eliminates friction-induced stem galling, and keeps manual steering smooth even under max torque conditions.

6. In-Line Maintainable Packing & Backseat System

   Equipped with a precision-machined integral backseat that isolates the packing chamber from line pressure when the valve is fully open. This allows for safe secondary sealing and prevents atmospheric leakage over years of demanding plant operation.

7. Severe Service Flexible Packing

   Utilizes a heavy-duty flexible graphite packing stack integrated with dynamic zinc sacrificial corrosion inhibitors, safeguarding the stem from micro-galvanic pitting and ensuring uniform compression sealing.