FLUSH FACE FOR SMALL FLANGE SIZES

Reotemp’s Flush-Face Diaphragm Seal for small flange sizes is useful in applications requiring an all-welded construction, low-profile height, and small flanged process connection.

Multi-piece Seal Design Bolts Directly to Process Flange
Center or Side Instrument Exit
Ideal for Pressure Gauges or Pressure Transmitters
Suited for Small Flange Sizes and Sensitive Instrumentation

Specifications

Non-Wetted Materials

Flange: 316 SS or Others

Wetted Materials

Insert/Diaphragm: 316SS, Hast 276, Inconel, Monel, or Others

Process Temperature Limits

-150° to 850°F

Ambient Temperature Limits

Determined by the Pressure Instrument

Minimum Recommended Span

	Flange Size
	1/2″	3/4″	1″	1 ½”
Diaphragm Size	1.5″	1.9″	2.2″	3″
2.5″ & 3.5″ Gauges	N/A	30 psi	15 psi	10 psi
4″, 4.5″, & 6″ Gauges	N/A	60 psi	30 psi	10 psi
Transmitter (Gauge Pressure)	30 psi	15 psi	150” H2O	60” H2O
Transmitter (Differential Pressure)	15 psi	200” H2O	100” H2O	60” H2O
Differential Pressure Gauge	N/A	N/A	N/A	N/A

Weights and Dimensions

	Flange Rating	A	B	# of Bolts	Weight (lbs.)
.5″	150#	3.5″	.81″	4	3
.75”		3.88”	.81”	4	3
1”		4.25”	.81”	4	4
1.5”		5”	.94”	4	6
.5”	300#	3.75”	.81”	4	3
.75″		4.62″	.94″	4	5
1”		4.88”	.94”	4	6
1.5”		6.12”	1.06”	4	9

Maximum Working Pressures at 100ºF:
Determined by ANSI B16.5 flange ratings.

NOTE: Weights and dimensions is for raised face flange only. Other flange sizes and sealing face info can be found in ANSI B16.5 standards.

W9RD Flush Face for Small Flange Sizes