Gate valve A00

Gate valves with bolted bonnet A00, sizes from DN50 to DN300, pressure up to PN320, working temperature up to 350°C.

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Working medium: radioactive water, water steams and all other operating media inside and outside hermetic zones of nuclear power plants.
Application: nuclear and chemical industry.
Seismic Resistance I-st class, according to IEC 980, IEEE 382, EN 60068-2-6;
Class of safety: 2-nd, according to NP-068-05, NP-001-15.

Gate valve А00 has bolted construction.
Body, bonnet and leading details are made of forgings and rolled steel.
The seats of body and wedge (disc) are welded on with wear-resistant material.
Flexible wedge, with material matching the steel body.
The monolithic stem is made of special high-temperature and acid-resistant steel.
The bearing of the stem nut is protected by dust collectors.
The connection is with butt welding type "BW" according to DIN, GOST, ČSN.
The control of the welded joints is by ultrasonic or X-ray analysis.
The operation of gate valve A00 is performed by:
- Manual operation: - manual hand wheel for sizes from DN50 to DN100 mm, and those from DN100 to DN300 mm have manual gearbox.
- Electric operation: - with electric actuator according to working conditions requirements and these of the customer.
The tests of gate valve A00 are carried out in accordance with the standards for valves intended for nuclear power plants or according to the working conditions and customer requirements.
Gate valves A00 can be installed in any position, and for sizes larger than DN200mm it is recommended to install them in a horizontal position. When installing a gate valve equipped with an electric actuator, the manufacturer's installation requirements for the electric actuator must be observed.

Monolythic stem (spindle) and wedge - strength, stability and wear resistance.
The stem nut has two bearings and dust collectors - long-term cycle of operation without maintenance and repair.