Stainless Steel Gauges

316 Stainless Steel or Alloy 20 Gauge

316 Stainless Steel Expansion Tank Gauge

Automatic316 stainless steel or alloy 20 gauge
Liquid Level Pressures up to 300 PSI
Rubber washer for:
5/8″ glass – 9/16″ x 7/8″ x 3/8″
Rods 1-3/4″ shorter than centers
Glass 3″ shorter than centers
1/8″ Drain Plug
Furnished with a Vertical Rising 
Ball Check and Investment Casting

 

Non-AutomaticPage 6 - EFI 00316 Stainless Expansion Tank Gauge - Non-Automatic - 150psi
Liquid Level Pressures up to 150 PSI
Rubber washer for:
5/8″ glass – 9/16″ x 7/8″ x 3/8″
Rods 1″ shorter than centers
Glass 2-1/2″ shorter than centers

1/2″ NPT:
Rods 1-1/2″ shorter than centers
Glass 2-1/4″ shorter than centers

3/4″ & 1″ NPT:
Rods 1″ shorter than centers
Glass 2-1/2″ shorter than centers

MODEL Size of NPT
Connection
Size of
Glass O.D.
MODEL Size of NPT
Connection
Size of
Glass O.D.
EFI 1511 1/2″ 5/8″ EFI 00316 1/2″
3/4″
1″ (Bushing Furnished)
5/8″
5/8″
5/8″
3/4″ 5/8″

 

316 Stainless Steel, Carbon Steel

316 Stainless Steel Gauge

Automatic316 Stainless Steel, Carbon Steel
Steam Pressures up to 250 PSI @ 406°F
Liquid Level Pressure up to 500 PSI
Stainless Steel furnished with Investment Casting
Material used conforms with or exceeds
requirements of AISI, ASTM and/or API-ASME
for maximum recommended pressures and temperatures.

Rubber washer for:
5/8″ glass – 9/16″ x 13/16″ x 3/8″
3/4″ glass – 23/32″ x 15/16″ x 3/8″
Rods 1-1/4″ shorter than centers
Glass 2″ shorter than centers
Note: Specify for steam or liquid level, as
automatic balls must be removed for steam.
1/4″ Drain

 

Automatic
Steam Pressures up to 250 PSI @ 406°F
Liquid Level Pressures up to 500 PSI
Investment Casting
Page 6 - EFI 23-350 and 23-353 Stainless Gauge - Automatic - 500psi
Conforms to ASME requirements for automatic water gauges
Rubber washer for:
5/8″ glass – 9/16″ x 7/8″ x 3/8″
3/4″ glass – 23/32″ x 7/8″ x 3/8″
Rods 1-1/4″ shorter than centers
Glass 2″ shorter than centers
1/4″ Ball Valve DrainWith

1/4″ NPT Ball Valve →

MODEL Construction Size of NPT
Connection
Size of
Glass O.D.
MODEL Size of NPT
Connection
Size of
Glass O.D.
EFI 70A316 Stainless Steel 1/2″ 5/8″ EFI 23-350 1/2″ 5/8″
EFI 71A316 Stainless Steel 3/4″ 3/4″
EFI 71ACS Carbon Steel 3/4″ 3/4″ EFI 23-353 3/4″ 3/4″
EFI 70ACS Carbon Steel 1/2″ 5/8″

 

316 Steel Expansion Tank Gauge

Vacuum or Pressure Gauge

Non-AutomaticPage 6 - EFI 23-651 and 23-654 Stainless Expansion Tank Gauge - Non-Automatic - 250psi
Liquid Level Pressures up to 250 PSI
Investment Casting
Rubber washer for:
5/8″ glass – 9/16″ x 13/16″ x 3/8″
Rods 1″ shorter than centers
Glass 2-1/2″ shorter than centers
Lower valve has a hand wheel shut-off
1/8″ Drain Needle

Double AutomaticPage 6 - EFI 70A316-71A316-71ACS-70A Stainless or Steel or Iron Gauge - Automatic - 500psi
Construction: Bronze, Carbon Steel
Stainless Steel
Liquid Level Pressures up to 500 PSI
Rubber washer for:
3/4″ glass – 23/32″ x 15/16″ x 3/8″
Rods 1-1/4″ shorter than centers
Glass 2″ shorter than centers
MODEL Size of NPT
Connection
Size of
Glass O.D.
MODEL Size of NPT
Connection
Size of
Glass O.D.
EFI 23-651 1/2″ 5/8″ EFI 37A/1 Bronze 3/4″ 1″
EFI 23-654 3/4″ 5/8″ EFI 71 ACS/1
Carbon Steel
3/4″ 1″
EFI 71A316/1
Stainless Steel
3/4″ 1″

 

“1” O.D. Glass” Gauge

Center Support For Gauge Valves

AutomaticPage 7 - EFI 37A-1 and 71ACS-1 and 71A316-1 1in OD Glass Gauge -auto - 500 psi
…For a Wider Observation of Liquid Level
Liquid Level Pressures up to 500 PSI
Construction: Bronze, Carbon Steel,
Stainless Steel
Rubber washer for:
1″ glass – 15/16″ x 1-1/8″ x 3/8″
Rods 1-1/4″ shorter than centers
Glass 2″ shorter than centers
Note: Center Supports also
available for 1″ O.D. gauge.  
Consult with EFI.

Stainless Steel Gauge Illustrated

For Long, High TanksPage 7 - Center Support for Gauge - All materials
The center support incorporates the use
of two or more tubes instead of one, for
use with valves installed on extra long
connections.When order, furnish material of construction
desired along with connection size.
Note:
• Contact EFI to determine which gauges are compatible with center supports
• Center Supports also available for “1” O.D. glass” gauge.  Consult with EFI.
MODEL Size of NPT
Connection
Size of
Glass O.D.
MODEL CONSTRUCTION Size of NPT
Connection
EFI 37A/1 Bronze 3/4″ 1″ Bronze
Carbon Steel
Stainless Steel
PVC
1/2″

or

3/4″

EFI 71ACS/1
Carbon Steel
3/4″ 1″
EFI 71A316/1
Stainless Steel
3/4″ 1″