Product description

Expanded Gate Valve

Model

Za44H, Zpc48H-Expanded Gate Valve

Nominal diameter

2″～30″

Operating temperature

-196℃～593℃(the range of service temperature may vary for different materials)

Nominal pressure

CLASS 150～2500 （PN20～PN420）

Material

Main material: A216 WCB, WCC; A217 WC6, WC9, C5, C12, C12A, CA15; A351 CF8, CF8M, CF3, CF3M, CF8C, CN3MN, CK3MCUN, CN7M; A352 LCB, LCC; A494 CW-6MC, CU5MCuC, M35-1; A890 4A(CD3MN), 5A(CE3MN), 6A(CD3MWCuN); ASME B 148 C95800, C95500, etc.

Design standard

AIP 6D, API 600, ASME B16.34

Structural length

AIP 6D, ASME B16.10

Connecting end

ASME B16.5, ASME B16.47, ASME B16.25

Test standard

AIP 6D, API 598, ISO 5208

Operation method

non-elevating hand wheel, bevel gear, motor drive unit, pneumatic drive unit

Application fields

Geothermal energy system, For application in fields such as electric power industry, tap water engineering in urban construction, chemical engineering, etc.

Technical characteristics

Stellite overlay welding or or high-velocity oxygen fuel（HVOF) spraying is applied to the sealing surfaces of valve seats and gate discs to enhance the valve's erosion resistance and extend its service life.

SS+ graphite or metallic seal or pressure self-sealing is adopted between valve body and bonnet for reliable sealing

Rising stem structure, making the valve switch position be clear at a glance

The valve stem thread will not come into contact with the medium, so the corrosion of medium to the thread is reduced.

Small switching moment, reliable sealing

The self-sealing parallel double-plate and the stretching type parallel double-plate structures are adopted, so the valve would not jam due to the impact of cold or hot medium.

Small flow resistance, high flow capacity and good flow characteristics

Through improving the structural design and selecting reasonable packing structure and qualified packing supplier, the valves can meet the Class A sealing test requirements of ISO 15848 FE.