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Pilot Operated (F70PR)

Pilot Operated (F70PR)

by | Apr 4, 2024

Home | Overpressure Protection | Pressure Relief Valves | Pilot Operated (F70PR)

Overpressure Protection

Pilot Operated (Gas Utility)

F70PR Modulating, Flowing (Gas / Liquid Service)

Pilot operated pressure relief valves with aluminum or carbon steel construction, and modulating-action pilots. A variety of soft seat materials are available. Ideal for natural gas regulator and meter protection, and positive displacement blower protection. This product provides high capacity flow rates and are inline repairable. Made for DOT / gas transmission applications (non-ASME Code). FLOWSAFE customers buy smaller valves, save money!

FEATURES

  • F100 Pilot-operated; Modulating, flowing
  • Soft seated (Elastomer)
  • Optional backflow preventer & field test connection
  • Full bore orifice
  • Full piston lift at 105% set pressure, proportional to demand
  • Pilot vents to process
  • Leak tight seating and re-seating
  • Integral flange design
  • Carbon steel body with corrosion resistant trim
  • Rugged, simple, light-weight design

APPLICATIONS

  • Natural gas
  • DOT
  • Chemical processing
  • Positive Displacement Blowers
  • High cycle rates / long service life
  • Minimal product loss importance
  • Operation close to set point with zero leakage required

 

CERTIFICATIONS & COMPLIANCE

  • DOT (49CR192.199)
  • Superior flow capabilities (independently verified)

Service Envelope

Connection Sizes
Custom sizes & dual outlet bodies available on reque		1.5” x 2” - 12” x 16”
(38mm x 50mm - 300mm x 400 mm)
Set Pressure Ranges
See F70PR Catalog for orifice specific ratings		10” wc – 285 psig
(.025 – 19.6 barg)
Temperature Ranges-65 to 400°F
(-54 to 204°C)
Orifice Area Range1.770 – 111.87 in2
(1142 – 72174 mm2)
End Connections
Custom types available on request 		Standard:
Female NPT (1.5” x 2” size only)
Integral ASME RF Flanged (150# inlet/outlet)
Materials of Construction
Custom available for service or on request		Carbon Steel w/ aluminum trim
Aluminum (1.5” x 2” size only)
Seat Materials
Custom available for service or on request		Elastomer:
Buna-N, Viton® (FKM) or equal, EPR/EPDM
PRODUCT BRAND

Flow Safe

PRODUCT CATEGORIES
Overpressure Protection | Pressure Relief Valves
APPLICABLE REGIONS
Downloads
F70PR Manuals

F70PR Pilot Operated Safety Relief Valves Catalog

Soft-Seated Advantages Flyer

Flow Safe Line Card

Unloader (F70U)

Unloader (F70U)

by | Apr 4, 2024

Home | Overpressure Protection | Pressure Relief Valves | Other PRDs | Unloader (F70U)

Ovepressure Protection

Unloader (F70U)

Unloader Valve (Manual / Solenoid)

Unloader valves suitable for continuous cycling applications, gas or liquid. Features a unique piston seal design. Ideal for batch processing where rugged, high cycle service and minimum maintenance is required. Can be supplied with control valve (electric, pneumatic, hydraulic), plus other accessories. Excellent choice for emergency shutdown (ESD) applications.

 

FEATURES

  • Electric or pneumatic control (remote or local operation)
  • Soft seated (Elastomer)
  • 2-way or 3-way solenoid
  • Optional filter & isolation valve
  • Full or reduced bore orifice
  • Bubble tight seating and re-seating
  • Integral flange design
  • Carbon steel body with corrosion resistant trim

 

APPLICATIONS

  • Emergency shutdown (ESD)
  • High cycle rates
  • Long service life
  • Explosion-proof controls
  • Minimal installation & maintenance

Service Envelope

Connection Sizes
Custom sizes & dual outlet bodies available on request
1.5” x 2” - 12” x 16”
(38mm x 50mm - 300mm x 400 mm)
Set Pressure Ranges
See F70U Catalog for orifice specific ratings		5 – 285 psig
(.35 – 19.6 barg)
Temperature Ranges-65 to 400°F
(-54 to 204°C)
Orifice Area Range1.770 – 111.87 in2
(1142 – 72174 mm2)
End Connections
Custom types available on request		Standard:
Female NPT (1.5” x 2” size only)
Integral ASME RF Flanged (150# inlet/outlet)
Materials of Construction
Custom available for service or on request		Carbon Steel w/ aluminum trim
Aluminum (1.5” x 2” size only)
Seat Materials
Custom available for service or on request		Elastomer:
Buna-N, Viton® (FKM) or equal, EPR/EPDM

CERTIFICATIONS & COMPLIANCE

  • Independent cycle testing
PRODUCT BRAND

Flow Safe

PRODUCT CATEGORIES
Overpressure Protection | Pressure Relief Valves | Other PRDs
APPLICABLE REGIONS
Downloads
F70U Manual

F70U Unloader Valve Catalog

Soft-Seated Advantages Flyer

Flow Safe Line Card

Safe-T Whistle

Safe-T Whistle

by | Apr 4, 2024

Home | Overpressure Protection | Pressure Relief Valves | Other PRDs | Safe-T Whistle

Overpressure Protection

Safe-T Whistle

Flow Safe Audio Signaling Devices

The Flow Safe Safe-T Whistle (STW) is designed to provide an audible signal of a system over pressure or upset condition, at a specific pressure. It is designed to operate independently or with the Flow Safe F80 Series Safety relief Valves.

Depending upon the pressure, without the relief valve, sound levels greater than 100 dBA, typically 105-108, can be expected at 30 feet; with the valve, approximately 90dBA.

With the safety valve, whistles can be set to go off at a predetermined pressure at the factory, or easily adjusted in the field. The whistle will signal in an intermittent mode, at approximately 300 signals per minute. This minimizes product loss while at the same time providing an audible signal.

Note: This is not a safety relief valve.

Without the safety valve, the whistle can signal in a continuous mode. Whistles are of heavy-duty, high-quality brass or stainless steel construction, with a 1/2″ male NPT connection.

Safe-T Whistle

Part NumberMaterialMin/Max Pressure, psigEnd Connection
Size/Type		Whistle Weight, oz.
01-1750-01Brass

10/740

½” Male NPT

12 oz.
01-1750-03

Stainless Steel

10/1480

½” Male NPT

16 oz.

Without the safety valve, the whistle can signal in a continuous mode. Whistles are of heavy-duty, high-quality brass or stainless steel construction, with a 1/2″ male NPT connection.

PRODUCT BRAND

Flow Safe

PRODUCT CATEGORIES
Overpressure Protection | Pressure Relief Valves | Other PRDs
APPLICABLE REGIONS
DOWNLOADS

Soft-Seated Advantages Flyer

Flow Safe Line Card

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