Steel Gate Valves

Hanno Valve Steel Gate Valves are suitable for a variety of working conditions, including petroleum, chemical, pharmaceutical, fertilizer, power and other industries, suitable for cutting off or connecting pipeline media, but can not be used for regulating and throttling. The structure design of Gate Valves is reasonable, the opening and closing is less labor, the medium flow is not restricted, the flow is not disturbed, the pressure is not reduced, the operation is relatively easy.

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Product Description

Steel Gate Valves refer to gate valves manufactured from metal steel castings. They are distinct from cast iron gate valves, forged steel gate valves, and malleable cast iron gate valves. The opening and closing component is the gate plate, which moves perpendicular to the fluid direction. The gate valve is designed for fully open or fully closed service and must not be used for flow regulation or throttling.

The valve features two sealing surfaces. In conventional wedge gate valves, these surfaces form a wedge-shaped angle that varies with valve parameters—typically 5° (or 2°52' for lower medium temperatures). The gate plate of a wedge gate valve can be manufactured as a one-piece rigid plate or as an elastic plate that allows slight deformation to compensate for sealing surface angle deviations during machining. Elastic plates offer significant advantages, including lighter opening and closing, improved sealing, good memory effect of elastic components, and long service life. They are widely applicable in regulating and conveying devices for pipelines in tap water, sewage systems, construction, petroleum, chemical, food, pharmaceutical, textile, electric power, marine, metallurgy, energy systems, and more.

Steel Gate Valves – Key Features

Low fluid resistance
Sealing surfaces less prone to medium friction and erosion
Effortless opening and closing
Unrestricted media flow direction, no flow disturbance, no pressure reduction
Simple structure with short structural length
Excellent manufacturability
Wide material availability for high-temperature and high-pressure resistance, offering broad application potential

Materials

Steel Gate Valves

NO.	Part name	Materials
1	Body	25L
2	Seat surface	13Cr
3	Disc	25L+13Cr
4	Stem	2Cr13
5	Gasket	304+Graphite
6	Nut	A194-2H
7	Bolt	A193-B7
8	Bonnet	25L
9	Sealing surface	13Cr
10	Packing	Expanded graphite
11	Gland flange	25L
12	Bolt	A193-B7
13	Nut	A194-2H
14	BOX	Molectron

Typical Applications

Industry	Service
Petroleum & Refining	Crude oil, product oil isolation
Chemical & Petrochemical	Corrosive/non-corrosive media on/off
Pharmaceutical	Clean, sanitary isolation
Fertilizer	High-pressure ammonia, urea service
Power Generation	Cooling water, steam, boiler isolation
Water & Wastewater	Potable water, sewage main lines
Marine & Shipbuilding	Seawater, ballast systems
Metallurgy & Energy	Slurry, high-temp gas isolation

Customization & OEM Service

Hanno Valve supports full customization to meet your project requirements:

Pressure rating: PN10 – PN420 / Class 150 – Class 2500
Size range: DN50 – DN1200 (2" – 48")
End connections: RF, RTJ, BW, SW, Threaded
Operation type: Handwheel, gearbox, electric actuator, pneumatic actuator
Special coatings: Epoxy, FBE, galvanized, high-temp paint
Non-standard materials: Duplex stainless steel, Hastelloy, Monel, Inconel (upon request)

✅ Short lead times thanks to in-house casting and machining. ✅ Sample orders and small batches welcome.

Quality Assurance

100% pressure test (shell and seat) per API 598 / ISO 5208
100% material traceability (chemical & mechanical reports)
In-house foundry with precoated sand process – ensures defect-free castings
Strict dimensional inspection during and after machining
Available certifications: ISO 9001, API 6D, CE/PED, TS (China special equipment license)