Large Diameter Gearbox Driven Cast Steel Globe Valve

Order directly from Hanno Valve, the Large Diameter Gearbox Driven Cast Steel Globe Valve for main steam and oil pipelines. Designed to overcome extreme hydrodynamic drag in large bores, its enclosed industrial gearbox provides smooth, high-torque disc control. Cast in our own foundry using advanced precoated sand techniques, the high-density steel shell eliminates shrinkage porosity and ensures absolute dimensional stability under pressure.

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Product Description

Hanno Valve manufactures the Large Diameter Gearbox Driven Cast Steel Globe Valve for large‑scale industrial plants requiring reliable flow throttling and positive shutoff. The valve assembly includes heavy‑duty guide ribs inside the body cavity that support the large‑diameter A105+13Cr disc throughout its travel, preventing disc vibration and seat chatter under high‑velocity flow. Sealed with a 304+graphite composite gasket and secured with A193‑B7 alloy studs and A194‑2H nuts, the bolted bonnet construction enables straightforward inline maintenance during plant turnarounds. Backed by 25 years of engineering experience, Hanno supplies these valves to major state‑owned enterprises including PetroChina, Sinopec, and Rosneft.

Why Choose Hanno Valve?

Feature / Standard	Typical Market Competitors	Hanno Large Diameter Gearbox Driven Cast Steel Globe Valve Advantage
Casting Process	Outsourced sand casting, prone to porosity	In‑house precoated sand foundry with 100% spectral control
Disc Guidance	Basic top guiding; susceptible to vibration	Heavy‑duty body cavity guide ribs + dual stem alignment
Gearbox Seal	Basic dust cover	Fully enclosed, weatherproof, IP67‑rated industrial gear drive
Quality Control	Sampling pressure test	100% Hydrostatic, pneumatic, and wall thickness testing

Large Diameter Gearbox Driven Cast Steel Globe Valve

Technical Specifications

Parameter	Specification	Part No. & Material
Design Standards	API 600, GOST 12815, DIN 3356	1. Body / Bonnet: Cast Steel 25L
Size Range	DN150 – DN600 (6" – 24")	3. Disc: Forged A105 + 13Cr Hardfacing
Pressure Class	Class 150 – Class 600 / PN16 – PN100	6 / 7. Nut / Bolt: ASTM A194‑2H / A193‑B7
Actuation	Manual Enclosed Worm/Bevel Gearbox	10. Stem Packing: Die‑Formed Flexible Graphite
Flange Finish	Smooth / Serrated / RTJ Flanges	11 / 12. Gland Assembly: 25L / A105 Steel

Product Application

District Heating Networks: Main thermal water supply and bypass lines in city heating networks.
Petrochemical Refining: Large‑bore crude oil transport and tank farm isolation (Rosneft & Petronas projects).
Metallurgical Coal Utilities: High‑volume gas and cooling water transport (China Shenhua Group).

Customization Process

Engineering Drawing Approval: Custom face‑to‑face dimensions and flange standard matching.
In‑House Shell Casting: Precoated sand molding, pouring, and 100% spectrographic verification.
Precision CNC Machining: 4‑axis vertical and horizontal machining centers ensure tight tolerances on sealing seats.
Testing & Paint Coating: Hydrostatic testing followed by heavy‑duty anti‑corrosion epoxy painting.

Packaging & Warranty

Packaging: Custom wooden crates with internal reinforcement bars and soft foam shock absorption.
Lead Time: 20‑35 days depending on size and customized flange drilling specifications.
Service & Warranty: 18‑month factory warranty; complete replacement parts inventory available for immediate dispatch.

Frequently Asked Questions (FAQ)

What sizes are available for large‑diameter gearbox globe valves?

Hanno produces Large Diameter Gearbox Driven Cast Steel Globe Valve ranging from DN150 (6") up to DN600 (24") in various pressure ratings.

Is the gearbox operator field‑replaceable or convertible to electric actuation?

Yes, the mounting flange follows ISO 5210 standards, allowing easy replacement or future automation upgrades without removing the valve from the line.