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PF SCN Slam Shut
PF SCN Slam Shut Safety Device
The SCN is a compact safety device (SAV) which quickly intercepts gas flow whenever the pressure under monitoring reaches a pre-set limits, or whenever manually required by operator on site or through a remote command (optional device).
SCN is a slam-shut valve with self-operated actuation and manual resetting, it is an ideal product for distribution networks and industrial and chemical engineering applications.
SCN is suitable for natural gas and all non-corrosive gaseous media. Its ‘top entry’ design makes it easy to maintain without removing the body from the pipeline.
Designed With Your Needs In Mind
• Compact Design
• High Accuracy
• Easy Maintenance
• Easy Maintenance
• Wide size range
• Top Entry
• Top Entry
• Third Party Certified Safety Device
• Fast Response Time
• Fast Response Time
• Integral By-Pass
Main Features:
• Intervention for overpressure and/or underpressure
• Manual push-button control at installation point
• 3 way solenoid valve for remote control (available on request)
• Manual re-setting
• Internal by-pass for pressure equalization before resetting
• Possible installation in any position although installation on horizontal pipes is recommended
Functional Features*:
• Maximum inlet pressure up to: 275 PSIG for Steel Body and 246 PSIG for Ductile Iron
• Range of tripping for overpressure: Who: 4″ W.C. to 72.5 PSIG
• Minimum ambient temperature: Execution up to -40°F (to specify in the request).
• Maximum ambient temperature: +140°F
• Flowing gas temperature: up to -4°F + 140°F
• Accuracy class AC: AG: ± 5% to 10% for over pressure, ± 10% to 20% for under pressure
• Look-up pressure class SG: up to 10
• Range of tripping for overpressure: Who: 4″ W.C. to 72.5 PSIG
• Minimum ambient temperature: Execution up to -40°F (to specify in the request).
• Maximum ambient temperature: +140°F
• Flowing gas temperature: up to -4°F + 140°F
• Accuracy class AC: AG: ± 5% to 10% for over pressure, ± 10% to 20% for under pressure
• Look-up pressure class SG: up to 10
Design Features:
• Nominal dimensions DN: 1” – 1 1/4″ – 1” 1/2 – 2” – 2”1/2 – 3” – 4” – 6” – 8”
• Flanged connections: UNI PN 16; class 150 RF
• Flanged connections: UNI PN 16; class 150 RF
Materials**:
• Body: Cast steel ASTM A 216 WCB (all DN). Spheroidal ductile iron GS 400 – 18 ISO 1083 DN 150 ≤ (6”) included.
• Covers: Diameter from 375 to 630 Drop-forged carbon steel / from 658
to 817 Aluminium
• Diaphragmcse: Die cast aluminum GD-AI SI 13 Fe UNI 5079-74
• Valve Seat & Valve: X12CrS13 UNI 6901-AISI 416 for DN 1″ to 3″ Carbon steel chromium plated for DN 4″ to 8″
• Seals: Nitril rubber Vulcanized
• Connection fittings: In zinc-plated carbon steel according to DIN 2353; Stainless steel on request
• Body: Cast steel ASTM A 216 WCB (all DN). Spheroidal ductile iron GS 400 – 18 ISO 1083 DN 150 ≤ (6”) included.
• Covers: Diameter from 375 to 630 Drop-forged carbon steel / from 658
to 817 Aluminium
• Diaphragmcse: Die cast aluminum GD-AI SI 13 Fe UNI 5079-74
• Valve Seat & Valve: X12CrS13 UNI 6901-AISI 416 for DN 1″ to 3″ Carbon steel chromium plated for DN 4″ to 8″
• Seals: Nitril rubber Vulcanized
• Connection fittings: In zinc-plated carbon steel according to DIN 2353; Stainless steel on request
* Different functional features available on request.
** The materials indicated above refer to the standard models.
Different materials can be provided according to specific needs.
** The materials indicated above refer to the standard models.
Different materials can be provided according to specific needs.
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