mediums:

  • gases
  • liquids

materials:

  • ductile cast iron
  • cast steel
  • stainless steel
  • bronze
Overflow valve – T28
Gases Liquids
  • DN20 to DN200 (3/4“ bis 8“)
  • PN6 to PN25
  • outlet pressure: 0,5 – 25 bar
  • for liquids and gases
  • CC480K, CC333G

Overflow valve – T28

self-operated, for liquids and gas

The function of overflow valves (relief valves, pressure retaining valves) is, that the outflow of the medium at a set pressure, in which an existing back pressure or vacuum having no effect on the set over pressure (retaining pressure). The above listed items are characteristic for an upstream pressure regulator, by comparison to a normal safety valve. The safety valve is only a device to prevent a specific pressure from being exceeded (set pressure).

The overflow valve T27 is a single-seat valve and is especially suitable for incompressible media, for example water, oil (lubrication oil, fuel oil, HFO, LFO, MGO), etc. The valves are fully relieved so that the back pressure has no effect on the set (overflow) pressure, only the flow quantity changes according to the pressure difference.

They are mainly used in pump circuits to keep a certain pressure constant.

The sealing between the guide sleeve and the cone takes place with an o-ring.

The overflow valves can be supplied with VG connection.

They are available in straight and angle form.

datasheet Operation instruction back
Installation length acc. VG 85035 and VG 85036
T27

Technical specifications

Installation length acc. VG 85035 and VG 85036

DN20253240507080100125150200
L1(mm)120130140180210260280330390450580
L2(mm)6570758085110115130145160200
L3(mm)657075808595100115130140175
H(mm)           
h(mm)           
B(mm)           

Flanges acc. to (DIN, JIS, ASME, ANSI)

view dimensions

SCHLEY ARMATUREN GMBH - COMBINES TRADITION SINCE 1913 AND MODERNITY

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