Bellow Sealed Gate Valve - Forged Steel Gate Valve with Bellow

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

Products Range:

Size: NPS 1/2" ~ 2"; DN15 ~ DN50

Rating:  ANSI 150lb ~ 800lb; PN16 ~ PN110

Body Materials:  Carbon Steel, Stainless Steel, Alloy Steel, Duplex Steel

Bellow materials:  SS304, SS316L, SS321 (1.4541), SS316Ti (1.4571), Inconel, Hastelloy C276

Trim: Per API 600

Design Feature:

Zero stem emission

Solid wedge

Graphite stem packing secondary seal

Expanding seat ring

Application:

Refinery

Petrochemical

Solar energy power plant

Hot oil, steam supply