Weflo Fig. F1318 Pressure Reducing Valve

Name: Weflo Fig. F1318 Pressure Reducing Valve – Datasheet & Quote
Brand: Weflo
SKU: Fig. F1318

Description

Pilot-operated pressure reducing valve for fire water systems

The Weflo Fig. F1318 is a UL 1739 listed pressure reducing valve with flanged ends. It takes a high inlet pressure from a fire pump or riser and delivers a lower, constant outlet pressure across a wide flow range, which protects hose connections, sprinklers and risers on the lower floors of tall buildings and in zoned fire water networks. The main valve is pilot-operated, so the set outlet pressure does not fall away as flow increases.

Regulation is stabilised even at near-zero flow, and opening and response speed can be adjusted. The outlet pressure is changed with a single adjusting screw on the pilot. Enamel paint or fusion bonded epoxy coating is applied inside and out.

Technical specifications

Values are from the Weflo Fig. F1318 FLxFL data sheet. The sheet states that 1.5 to 10 in. valves are UL listed.

Parameter	Specification
Type	Pilot-operated pressure reducing valve, flanged by flanged
Sizes	DN40 to DN300
End connections	Flanges to EN 1092-2 PN16, ANSI Class 125/150/250; other flanges on request
Upstream pressure	300 psi maximum
Downstream pressure ranges	15 to 60 psi, 35 to 85 psi or 65 to 165 psi, by pilot spring
Approvals	UL 1739 listed, 3C certified
Body and bonnet	Ductile iron ASTM A536 Grade 65-45-12
Seat, stem and spring	Stainless steel ASTM A276 Type 304
Diaphragm	Nylon-reinforced natural rubber, EPDM or NBR
Seat disc	NBR or EPDM
Pressure reducing pilot	Bronze ASTM B62 C62300
Pilot circuit	Pressure reducing pilot, ejector, Y-strainer, stabilizer and tubing
Coating	Enamel paint or fusion bonded epoxy, interior and exterior

Main dimensions

Size	L, mm	H, mm	W, mm
DN40	200	180	410
DN50	230	200	420
DN65	290	215	440
DN80	310	265	455
DN100	350	290	470
DN125	400	340	490
DN150	480	390	540
DN200	600	470	590
DN250	730	570	640
DN300	850	690	690

Selection notes

Pick the pilot spring range that includes the required downstream pressure, and check that the inlet pressure never exceeds 300 psi. A reducing valve needs a minimum flow range and correct sizing for the largest hose or sprinkler demand, so the system designer should confirm sizing against the flow curves.

Documents and quotation

The attached data sheet gives the material table, the pilot schematic and dimensions. Send the size, end connections, inlet and outlet pressures, flow rate and quantity when requesting a quotation. See other fire protection valves under Fire Fighting.

Datasheets & Documents

Datasheet Weflo Fig. F1318 Pressure Reducing Valve FLxFL data sheet Download

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About brand

Fire protection contractors meet the Weflo name on gate valves, hydrants and check valves for sprinkler and hydrant mains. Weflo Valve is based in Qingdao, China, and makes industrial and fire protection valves. Seven Star LLC lists the Weflo Fig. 1209 flanged balancing valve and supplies Weflo valves for building services and fire water projects in Oman on inquiry.

Weflo valve families

The manufacturer program covers OS&Y and NRS gate valves, fire hydrants, check and alarm check valves, butterfly valves, deluge, pre-action, pressure relief and pressure reducing valves, Y and basket strainers, and air relief valves. Weflo states that its OS&Y and NRS gate valves are UL listed and FM approved through 24 inches. Products are identified by figure number, as with the Fig. 1209 balancing valve in our listing.

Ordering Weflo valves: what we need

Send the figure number, size, end connection and flange standard, pressure rating, the medium, and the listing or approval the project specification demands. Approvals apply per figure and size, so we check each line against the manufacturer datasheet. GCC civil defense requirements should be quoted in the request.

Frequently Asked Questions