Penberthy Type SF Site Flows - Dimensions

Pentair - Penberthy Dimensions for Series SF Site Flows  - Flow Factor

SERIES SF SIGHT FLOW INDICATORS – MODELS SF, SFD, SFF, SFR, SFG, SFB

Penberthy Model SF is a plain site flow, no indication except visual

Penberthy Model SFF is a Flapper style site flow with a Flapper that moves within the Site Flow

Penberthy Model SFR is a Rotator style site flow with a whirly/rotating pinwheel within the site flow.

Penberthy Model SFD is a drip tube style Site Flow

Penberthy Model SFG is a Gaseous style sight flow.

Please contact us for ordering, quoting or more information regarding Pentair / Penberthy Site Flows

www.flowfactor.com

216-765-4231

info@flowfactor.com

Penberthy Dual-Window Sight Flow Indicators

Flow Factor offers Flow Site Windows by Penberthy.
Flow Sites indicate flow via a glass window and can be offered with a flapper, rotator, drip tube or gaseous.

In high traffic or confined areas, add protection to your pipeline system.

Dual-Window Sight Flow Indicators provide two glass discs on each side, so that if either glass should fail for any reason, the other window can temporarily withstand pressures until the unit can be repaired or replaced.  Dual-Window Sight Flow Indicators and Factory Mutual System Approved Dual-Window Sight Flow Indicators are available in 150# NPT Models and 150# and 300# Flanged Models.  FM-Approved 150# units are rated for 150 psig.  FM-Approved 300# units are rated for 300 psig. 

Models 
150# NPT Dual-Window

DWF	Plain Dual-Window NPT SFI
DWFF	Dual-Window NPT SFI (Flapper)
DWFR	Dual-Window NPT SFI (Rotator)
DWFD	Dual-Window NPT SFI (Drip Tube)
DWFG	Dual-Window NPT SFI (Gaseous)

150# Flanged Dual-Window

DWF-F         Plain Dual-Window Flanged NPT SFI

DWFF-F       Dual-Window NPT SFI Flanged (Flapper)

DWFR-F       Dual-Window NPT SFI Flanged (Rotator)

DWFD-F       Dual-Window NPT SFI Flanged (Drip Tube)

DWFG-F       Dual-Window NPT SFI Flanged (Gaseous)

300# Flanged Dual-Window

DWM-F         Plain Dual-Window Flanged NPT SFI

DWMF-F      Dual-Window NPT SFI Flanged (Flapper)

DWMR-F      Dual-Window NPT SFI Flanged (Rotator)

DWMD-F      Dual-Window NPT SFI  Flanged (Drip Tube)

DWMG-F      Dual-Window NPT SFI Flanged (Gaseous)

Dual windows are comprised of two glass discs held in position by a metallic housing, internal shims and gaskets (pictured above).

The double, tempered glass window design provides added protection in applications where there is:
External mechanical impact - if the outer glass is cracked or shattered, the inner glass can temporarily continue in service until the unit can be repaired or replaced.
Abnormal compressive forces - in maintenance or replacement situations, the housing assists in alignment of the glass and can absorb uneven or excessive compression.
Thermal shock - in high temperature applications the inner and outer glass protect one another from an extreme thermal gradient.  The air pocket between the glass provides an insulative effect.
Corrosion/erosion - if the inner glass is weakened and it breaks, the outer glass can temporarily contain the fluid, withstand the pressure, and continue in service until the unit can be repaired or replaced.

Materials of Construction for  
FM-Approved Dual-Window Bodies

Standard: 
ASTM A126 Steel Gr WCB
ASTM A351/A296 316 STS Gr CF8M
ASTM A473 Alloy 20 CN7M

Optional: 
ASTM 494 Monel Gr M-35-1
ASTM A494 Hastelloy C CW12MW

Gaskets: 
Grafoil®
Nobestos®
Asbestos

Materials of Construction for Dual-Window 150 PSIG NPT or Flanged Body

Standard: 
ASTM A126 Iron Class B
ASTM B62 Bronze Alloy 836
ASTM A216 Steel Gr WCB*
ASTM A351/A296 316 STS Gr CF8M*

Optional: 
ASTM 494 Monel Gr M-35-1
ASTM A494 Hastelloy C CW12MW*
ASTM A743 Alloy 20 CN7M*
Consult Factory for other materials/components.
*Materials of Construction for Dual-Window 300# Flanged Body

150# NPT Dimensions  Standard sizes from: 1/4" to 3"

150# Flanged Dimensions  Standard sizes from: 1/2" to 8"

300# Flanged Dimensions  Standard sizes from: 1/2" to 8"

Call 866-360-9830 for application help and pricing

or go to our Penberthy Parts form HERE.

www.flowfactor.com