Direct Spring, Conventional – ASME code (F84/F85)
Overpressure Protection
Direct Spring, Conventional
F84M / F84 (Plastic Seated): Gas & Vapor Service
Enhanced performance conventional style SRV’s. Made in accordance with ASME Section XIII. “CE” or “UKCA” marks available. Available in brass, carbon, and stainless steel materials as standard. Special alloy construction available upon request. A variety of seat materials and connection styles available. F80M series small orifice devices are ideal for instrumentation panels, line blocks on cryogenic storage tanks, or thermal relief applications.
F84M HP: Set pressure range expansion to 15,000 psig for high pressure gases
The Flow Safe F84 Micro HP is an extension of coverage of the best-in-class F84M valve, expanding the high end of set pressure range from 9,944 to 15,000 psig (-1 and -2 orifices). The Flow Safe F84M HP, sourced, built and extensively tested domestically, offers a smaller profile and footprint and provides a soft seat technology that optimizes cost savings.
FEATURES
- Spring-operated, snap-acting
- Soft seated (Plastic)
- Full lift at set pressure
- Bubble tight seating and re-seating, factory tested per API 527
- Adjustable blowdown
- Integral / full nozzle, corrosion resistant trim
- Packed lift lever available on most sizes
- Unbalanced against backpressure
APPLICATIONS
- Compressors
- Full lift at set pressure
- Bubble tight seating and re-seating
- Adjustable blowdown
- Integral / full nozzle, corrosion resistant trim
- Packed lift lever available on most sizes
- Unbalanced against backpressure
Service Envelope
| Connection Sizes Larger sizes available on request | ¼” x ½” – 2” x 3” (6mm x 13mm – 50mm x 75 mm) |
| Set Pressure Ranges See F80 Catalog for orifice specific ratings | 15 - 15,000 psig (1.03 - 1,034 barg) |
| Temperature Ranges | -423 to 525°F (-252 to 274°C) |
| Orifice Area Range | .003 – 1.689 in2 (1.9 – 1089 mm2) |
| End Connections Custom types available on request | Threaded: NPT, SAE, MS33649/AS5202, AN 37° Flare Welded: ASME / DIN / API / SAE flanged, Grayloc Specialty: Swagelok® Tube / VCR, Threaded & Coned |
| Materials of Construction Custom available for service or on request | Carbon Steel, Stainless Steel, Brass, Monel, Hastelloy C / C22 / C276, Duplex 22% or 25% Cr |
| Seat Materials Custom available for service or on request | Plastic: Teflon®, Ekonol-filled PTFE, Kel-F (PCTFE), PI/PAI (Vespel®, Duratron®, or equal), PEEK |
CERTIFICATIONS & COMPLIANCE
- ASME Sec XIII (NB-18 Cert. No. 28066)
- API 520 (Sizing & Selection of PRV’s) / API 527 (Seat tightness of PRV’s)
- Superior flow capability (KA factor) vs. equivalent API 526 orifice
- API 526 center-to-face dimensions available on most sizes
- NACE MR0175 H2S compliant materials available on request
- PED / CE (2014/68/EU) compliant on request
- Canadian CRN (all Provinces per CSA B51)
- PER/UKCA complaint or request
PRODUCT BRAND
Flow Safe
PRODUCT CATEGORIES
APPLICABLE REGIONS
DOWNLOADS
F85M / F85 (Elastomer Seated): Gas & Vapor Service
Enhanced performance conventional style SRV’s. Made in accordance with ASME Section XIII. “CE” or “UKCA” marks available. Available in brass, carbon, and stainless steel materials as standard. Special alloy construction available upon request. A variety of seat materials and connection styles available. F80M series small orifice devices are ideal for instrumentation panels, line blocks on cryogenic storage tanks, or thermal relief applications.
FEATURES
- Spring-operated, snap-acting
- Soft seated (elastomer)
- Full lift at set pressure
- Bubble tight seating and re-seating
- Adjustable blowdown
- Integral / full nozzle, corrosion resistant trim
- Packed lift lever available on most sizes
- Unbalanced against backpressure
APPLICATIONS
- Compressors
- Thermal relief / instrument panels (see F84M Series)
- Storage Tanks
- Air/gas equipment or processes
- Flashing cryogenic fluids
Service Envelope
| Connection Sizes Larger sizes available on request | ¼” x ½” – 2” x 3” (6mm x 13mm – 50mm x 75 mm) |
| Set Pressure Ranges See F80 Catalog for orifice specific ratings | 15 - 10,313 psig (1.03 - 711 barg) |
| Temperature Ranges | -65 to 525°F (-54 to 274°C) |
| Orifice Area Range | .003 – 1.689 in2 (1.9 – 1089 mm2) |
| End Connections Custom types available on request | Threaded: NPT, SAE, MS33649/AS5202, AN 37° Flare Welded: ASME / DIN / API / SAE flanged, Grayloc Specialty: Swagelok® Tube / VCR, Threaded & Coned |
| Materials of Construction Custom available for service or on request | Carbon Steel, Stainless Steel, Brass, Monel, Hastelloy C / C22 / C276, Duplex 22% or 25% Cr |
| Seat Materials Custom available for service or on request | Elastomer: Buna-N, Viton® (FKM) or equal, EPR/EPDM, Aflas, FFKM (Chemraz®, Kalrez®, etc), Polyurethane, HNBR |
CERTIFICATIONS & COMPLIANCE
- ASME Sec XIII (NB-18 Cert. No. 28066)
- API 520 (Sizing & Selection of PRV’s) / API 527 (Seat tightness of PRV’s)
- Superior flow capability (KA factor) vs. equivalent API 526 orifice
- API 526 center-to-face dimensions available on most sizes
- NACE MR0175 H2S compliant materials available on request
- PED / CE (2014/68/EU) compliant on request
- Canadian CRN (all Provinces per CSA B51)
- PER/UKCA complaint on request
