General Description:
Pressure sealed gate valves are designed for high temperature, high pressure, services mainly encountered in nuclear and fossil fuel power plant. Compare with bolted bonnet valves, Flowtek’s pressure sealed gate valves are less complicated and can provide absolute excellent seal service with minimum maintenance.

Design Standard:
Basic Design: API 600/BS1414, ANSI B16.34, EN1984
Face to Face (End to End): ANSI B16.10, EN558-1
End Connection: ANSI B16.5, MSS SP-44/ASME B16.47, ANSI B16.25
Test & Inspection: API 598, EN12266

Product Description:
Flow-Teck can usually offer short delivery time and very cheap price for this kind of gate valve, except for special materials like F91, Inconel, Monel, etc.

Design Features:
Solid wedge(gate)
Outside screw and yoke (OS&Y)
Full port(FP) or reduce port(RP)
Bolted bonnet (BB) / welded bonnet (WB)
Other available Design: Pressure sealed bonnet(PSB) /Bellow sealed / stem packing sealed

Product Description:
This kind of gate valve with small size is often ordered in large quantities. Flow-Teck have stocks of common materials such as carbon steel (A105). Other materials are also available upon request.

Design Features:
Solid wedge / gate
Outside screw and yoke (OS&Y)
Full port or reduce port
Bolted bonnet (BB) / welded bonnet (WB)/ pressure sealed bonnet(PSB)
Bellow sealed / stem packing sealed

Product Description:
Flow-teck can provide both integral flanged type and welded flanged type. The price of the integral flanged type will be higher, but the quality will be better.

Design Features:
Solid wedge / gate
Outside screw and yoke (OS&Y)
Full port or reduce port
Bolted bonnet (BB) / welded bonnet (WB)
Pressure sealed bonnet(1500lb and above)
Bellow sealed / stem packing sealed are available

General Description:
Leakage from the valve gland (stem packing) is often a problem for environmental protection & sometime it is quite dangerous if such leakage is from a hazardous fluid or gas. FLOWTEK bellow sealed valves are designed with a bellow cartridge which welded to the valve bonnet and stem, so that when the stem up & down movement makes the bellows expands & compress. Therefore there is no sliding or rotating seals through which process fluid can leak.

Design Standard:
Design and Manufacture: API 602, ASME B16.34, BS 5352
Face to Face Dimension: ASME B16.10, EN558 (Threaded Ends and Socket Welded ends as per manufacture’s specification)
Flange Connection Dimension: ASME B16.5
BW Connection Dimension: ASME B16.25
Threaded Ends Dimension: ASME B1.20.1
Socket Welded Ends Dimension: ASME B16.11
Pressure-Temperature Ratings: ASME B16.34
Test & Inspection: API 598
Other: NACE MR01-75, Low Emission Test