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GB Metal-Seated Gate Valve (Z45T)

Industrial valves and fittings dispatch fast — wear parts and complete machines quoted on request.

Gate Valves

Resilient and metal-seated gate valves, buried and specialty types for municipal and industrial water systems.

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Z45T is the Chinese-standard workhorse for heating and industrial water: dark stem, metal-faced wedge on a bronze seat, cast or ductile iron body, epoxy coated. It is specified where the line carries treated heating water or runs hot enough that an EPDM wedge would age — a metal seat does not soften, it just weeps a little, which on a closed loop is acceptable and on a potable line is not. 2Cr13 stem with O-ring seals, PN10/16, DN50–DN600. Check the GB face-to-face before mating it to an imported pipe run.

General Specifications

Size RangeDN50 – DN600
Pressure RatingPN10 / PN16
ModelZ45T
Design StandardGB / CJT
Stem TypeNon-rising stem (NRS)
OperationHandwheel
MediaWater, light steam
End ConnectionFlanged
Max. Working Temperature0 – 80 °C (EPDM seat)

Materials & Coating

Body / BonnetCast iron / ductile iron; duplex 2205 / 2507 available on request
Wedge & SeatMetal seated, copper-alloy faced
CoatingEpoxy coated

Applications

Domestic water Low-pressure steam lines GB-spec projects

More from this series

GB Metal-Seated Gate Valve (Z45T) — Front view of the complete blue valve against a white backgroundGB Metal-Seated Gate Valve (Z45T) — Cutaway view showing internal disc, seat ring, stem, and handwheel

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