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Cast Steel Globe Valve

Cast Steel Globe Valve

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Detail Introduction

1.Back Seating Design
All our globe valves have the back seating design. In most cases, the carbon steel globe valve is fitted with a renewable back seat.For stainless steel alobe valve, the back seat is machined directly in the bonnet or is machined after welding. When the globe valve is at fully open position, the sealing of the back seat can be very reliable. However, as per the requirement of APl, it is not advisable to add or change packing by the mean of back seating when the valve is pressure containing.

For carbon steel globe valve, the seat is usually forged steel. The sealing surface of the seat is spray welded with hard alloy specified by the customer. Renewable threaded seat is used for NPS s 10 globe valves, and welded on seat can be also optional if being requested by the customer. Welded on seat is used for NPS>12 carbon steel globe valves. For Stainless steel globe valve, integral seat is usually adopted. or to weld hard alloy directly integrally. Threaded or welded on seat is also ontional for stainless steel alobe valve if being requested by the customer.

3.Stem Design
The stem is of integral forged design. The minimum diameter of the stem shall per the standard requirement.
WARM PROMPT:“Cast Steel Globe Valve”All text, data and pictures are for reference only.
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