OVAL WEDGE GATE VALVE TYPE A-KOB616 - PN16 - 1.4408

Type A-KOB616 - PN16 - 1.4408

Description - Oval gate valve Type A-KOB616


ACI long pattern stainless steel wedge gate valves type A-KOB-616 are equipped with rising stem and a flexible wedge. Like our other wedge gate valves they are tight in both flow directions. Gate valves are not suitable for control operation.

Our stainless steel gate valves are available in nominal sizes ranging from DN 40 to DN 600, and provide a full opening within the whole range of sizes. Larger nominal sizes are available on request.

The wedge gate valves type A-KOB-616 are manufactured according to EN 1984, which replaces the previously used DIN 3352. The face to face dimensions are defined in EN 558-1 Series 15 (previously DIN 3202-F5).

Each gate valve is tested for pressure resilience and leakage according to DIN EN 12266. The body pressure test is performed with 1.5-fold nominal pressure, and the seat leakage test is performed using 1.1-fold nominal pressure.

Applications include corrosive liquids, acids, alkalis, gases and vapours. The maximum allowable operating pressure is defined in DIN EN 1092-1 and depends on the operating temperature. Allowable temperatures range from -60°C to +400°C, depending on the chosen materials.

The valve body is made of cast stainless steel 1.4408, other materials are available.

The gate valves are metal to metal seated and tight in both flow directions. After initial operation, the stem’s gland seal has to be examined and if necessary tightened in regular maintenance intervals. Gland seal and cover gasket are made of graphite by default. Other materials (PTFE, FKM, ...) are available on request.

The flange connections of the gate valves A-KOB-616 follow DIN EN 1092-1 for pressure rating PN16, with sealing faces type B1. On request, flange connections for sizes above DN 200 can be drilled PN 10. Other flange standards, like ASME, BS or JIS, are also available.

Default operation of ACI gate valves A-KOB-616 is done using a handwheel. Alternatively, we offer gearboxes or chain wheels. For automation of the valves we install electrical, pneumatic or hydraulic actuators. If individual remote control or feedback signals are required, we equip the actuators with motor control or PROFIBUS interfaces.

Available Options:

  • Special materials, for example DUPLEX
  • Flange sealing surfaces with tongue or groove, recess for lens seal,...
  • Gate valves according to API 600, API 6D…
  • “TA Luft” conformity with directive July 2002 (spring-loaded gland seal)
  • Mechanical position indicator
  • Machined wedge guide
  • Drain plug
  • Ventilation plug

Technical Data

Material:

Body:
1.4408

Seats:
1.4408

Stem:
1.4401

Temperature:

from -60°C up to +400°C


Form:

Oval wedge gate valve, rising stem, flexible wedge, flange connections for sizes above DN 200 can be drilled PN 10

Face to face dimension:

EN 558-1 Gr. 15

Nominal size:

DN40 - 600

Nominal pressure:

PN16

Options:

  • Special materials, for example DUPLEX
  • Flange sealing surfaces with tongue or groove, recess for lens seal,...
  • Gate valves according to API 600, API 6D…
  • “TA Luft” conformity with directive July 2002 (spring-loaded gland seal)
  • Mechanical position indicator
  • Machined wedge guide
  • Drain plug
  • Ventilation plug
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+49 (0) 2461 91634 00
info@aci24.com