AS-Schneider - Valves Head Unit for Fugitive Emission Applications

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  - E Series Manifolds
    - General Information
      - Valves Head Unit for Fugitive Emission Applications

E Series Valves and Manifolds

General Features

Needle Valves acc. to ISO 15848

Screwed Bonnet
– Type 1 O-Ring Stem Seal + Graphite Packing
Type 3 PTFE Packing

Features

Integral Valve Seat – Metal to Metal Seated
Non-rotating Needle
External Stem Thread – Packing below stem threads. Stem Threads are protected from process media (non-wetted), helps to prevent stems from galling.
Stem with cold rolled threads
Back Seat – Metal to metal secondary needle seal
Color Coded Dust Cap for operating thread protection
Max. allowable (Working) Pressure (PS) 420 bar (6,092 psi)
Anti-Tamper Valve Head Options available
FKM O-Ring Needle Seal – RGD (Rapid Gas Decompression) resistant
PTFE or Graphite Packing
All non-wetted parts in 316 stainless steel
Types also comply with the requirements of TA-Luft 2021

ISO FE – Performance Data

ISO FE Type 1:
Class A 1,500 cycles / –29°C to 40°C
(–20°F to 104°F)
Class A 500 cycles / –29°C to 200°C
(–20°F to 392°F)
Class B 1,500 cycles / –29°C to 200°C
(–20°F to 392°F)

ISO FE Type 3:
Class B 1,500 cycles / –29°C to 200°C
(–20°F to 392°F)

OS&Y Needle Valve acc. to ISO 15848

QS&Y Bolted Bonnet
– Type 1 O-Ring Stem Seal + Graphite Packing
Type 3 PTFE Packing

Features

Integral Valve Seat – Metal to Metal Seated
Non-rotating Needle
External Stem Thread – Packing below stem threads.
Stem Threads are protected from process media (non-wetted),
helps to prevent stems from galling.
Stem with cold rolled threads
Blow-out proof Needle
Spring Washers for compensation of thermal expansion
Back Seat – Metal to metal secondary stem seal
Color Coded Dust Cap for operating thread protection
Max. allowable (Working) Pressure (PS) 420 bar (6,092 psi)
Anti-Tamper Valve Head Options available
FKM O-Ring Stem Seal – RGD (Rapid Gas Decompression) resistant
PTFE or Graphite Packing
Bonnet Seal Ring: Graphite
All non-wetted parts in 316 stainless steel
Types also comply with the requirements of TA-Luft 2021

ISO FE – Performance Data

ISO FE Type 1:
Class A 1,500 cycles / –29°C to 40°C
(–20°F to 104°F)
Class A 500 cycles / –29°C to 200°C
(–20°F to 392°F)
Class B 2,500 cycles / –29°C to 200°C
(–20°F to 392°F)

ISO FE Type 3:
Class B 2,500 cycles / –29°C to 200°C
(–20°F to 392°F)

Bellows Sealed Head Units

Screwed Bonnet
– PN 100 and Graphite Safety Packing
PN 250 and Graphite Safety Packing

Features

Integral Valve Seat – Metal to Metal Seated
Non-rotating Stem
Bellows sealed – PN 100 and PN 250 incl. Graphite Safety Packing
Stem with cold rolled threads
Stellite Needle Tip as standard
Bellows are submitted to a 100% Helium leak test
Leak rate: 10^-8 mbar l/s
Valves for Oxygen Service on request

Bellows Sealed Head Units are mainly used for applications requiring the highest tightness class – such as toxic or vacuum service.

Attention:
Packing adjustment may be required during the service life of
the valves. Valves that have not been cycled for a period of
time may have a higher initial actuation torque. When delivered
ex factory, the safety packing of the belllows sealed valve is not
fully tightened. In the event of a bellows failure the safety packing
must be tightened in order to avoid fluid leakage.

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