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Diaphragm Seal - Welded Pipe Flow Thru Seals

SKU W550/W560


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W550 & W560 Welded Pipe Flow Thru Seals

Welded Pipe Flow Thru Diaphragm Seals are ideal for installation in applications requiring little interruption to process flow and where all-welded piping connections are necessary. This style flow thru diaphragm seal can be made specific to the end-user’s piping specification with socket and butt weld process connections.


Construction Materials

Diaphragm: 316SS, Hast C-276, Tantalum, Monel, or others Lower Housing: 316SS, Hast C-276, Monel, or others Gasket: PTFE, Grafoil, or Klinger Upper Housing(Not Wetted): 316SS Standard

Process Temperature Limits

Metallic Lower Limit (°F)
PTFE Gasket -110/350°
Klinger Gasket -110/450°
Grafoil Gasket -40/600°

Ambient Temperature Limits

Determined by the Pressure Instrument

Minimum Recommended Span

2.5” & 3.5” Gauges 15 psi
4”, 4.5”, & 6” Gauges 30 psi
Transmitter (Gauge Pressure) 150” H2O
Transmitter (Differential Pressure) 300” H2Od
Differential Pressure Gauge (D40/42 Only) N/A

Maximum Working Pressure at 100°F

Bolts Grade 8 316SS
Metallic Lower W550/W560 2,500 psi 1,500 psi

Data Sheet

Download Datasheet

Installation Instructions

Torque Specification Reference Sheet ETB012-X01-0822 (PDF)