Page 1
Data Sheet
510/511 All Welded Diaphragm Seal
FEATURES
Compact design allows seals to fit in confined areas
Sufficient displacement to drive a wide variety of
instrumentation
Minimal fill volume
All stainless steel construction; other materials
available
Light weight design
TYPICAL USES
Oil and gas
Refineries (Hydrofluoric / Sulfuric Alkylation)
Chemical and petrochemical
Water and wastewater
Oil and gas fracking
NACE Compliant processes (sour gas separation)
Biogas and biodiesel
Corrosive processes
SPECIFICATIONS
Connection Style: 510: Threaded
511: Threaded with Flushed Connection
Process Connection
Size:
Instrument Connection
Size:
Pressure Rating
(MAWP):
Added Tolerance: ±0.5% typical
Fill Fluid: Glycerin, Silicone, Halocarbon®, Syltherm
Approvals:
WETTED COMPONENTS
Diaphragm Lower Housing
316L SS
Hastelloy® C-276
Monel® 400
Duplex 2205
NON-WETTED COMPONENTS
316 SS, Hastelloy® C-276, Monel® 400, Duplex 2205
1
⁄2 NPT Male
1
⁄2 NPT Female
Vac. to 1,500 psi at 100°F
(high pressure option available)
CRN, NACE
316L SS
Hastelloy® C-276
Monel® 400
Duplex 2205
Top Housing
510/511
Threaded Seals
KEY BENEFITS
• Continuous duty design
• All-welded construction prevents inadvertent
disassembly
• Ensures process compatibility
• Male connections eliminate adapters/fittings
®
All speci fications are subject to change without notice.
All sales subject to standard terms and conditions.
©2018 Ashcroft Inc. 510-511_welded_seal_ds_RevD_Ltr_09-18
ashcroft.com
info@ashcroft.com
1.800.328.8258
of 31
Page 2
Data Sheet
510/511 All Welded Diaphragm Seal
510
ORDERING CODE Example:
Process Connection Size
04 - ½ NPT Male 04
Seal Model
510 - All-welded threaded compact seal, with no flushing port 510
511 - All-welded threaded compact seal, with flushing port
Diaphragm Material
S - 316L Stainless Steel S
H - Hastelloy® C-276
P - Monel® 400
Z - Duplex 2205
Bottom Housing Material
S - 316L Stainless Steel S
H - Hastelloy® C-276
M - Monel® 400
Z - Duplex 2205
Instrument Connection Size
04T - ½ NPT Female 04T
Options (if choosing option(s) must include an “X”)
Fill Fluid X_ _
CF - Halocarbon®
CC - Syltherm® XLT (for low-temperature applications)
CG - Glycerin (direct-mount only) CG
CK - 50 cSt Silicone
DJ - 10 cSt Silicone
HA - Syltherm® 800 (for high-temperature applications)
Optional Features
DU - Instrument welded to seal
PU - Pipe plug for flushing connection (511 only)
NH - Stainless steel tag wired to product NH
HY - Hydrostatic testing
6B - Cleaning for oxidizing agents
HP - High pressure design (510: 10,000 psi MAWP, 511: 5000 MAWP)
04
S
S
04T
XCG
NH
All speci fications are subject to change without notice.
All sales subject to standard terms and conditions.
©2018 Ashcroft Inc. 510-511_welded_seal_ds_RevD_Ltr_09-18
ashcroft.com
info@ashcroft.com
1.800.328.8258
of 32
Page 3
3.188˝
2.244˝
Connection
[Ø31]
Connection
Connection
[Ø31]
Connection
[98]
Connection
Connection
[Ø57.5]
[106.6]
Data Sheet
510/511 All Welded Diaphragm Seal
DIMENSIONS
For reference only, consult Ashcroft for specific dimensional drawings
510 Diaphragm Seal
[81]
511 Diaphragm Seal with
Flushing Connection
[57]
2.26˝
Ø31 mm
1.22˝
1
/2 NPT
Instrument
Connection
Upper
Housing
Lower
Housing
1
/2 NPT
Process
1
/2 NPT
Instrument
510 High Pressure Diaphragm Seal
1.22˝
3.41˝
[86.5]
[33]
1.30˝
[23]
0.91˝
Across Flats SW
[28.6] / 1.13 ˝
[Ø37.5]
1.48˝
511 High Pressure Diaphragm Seal with
Flushing Connection
1.22˝
1
/2 NPT
Instrument
Connection
Across
Flats SW
[27] / 1.06˝
1
/2 NPT
Process
1
/2 NPT
Instrument
/4
1.97˝
1
Across
Flats SW
[27] / 1.06˝
1
/2 NPT
Process
4.20˝
2.54˝
[64.4]
[33]
1.30˝
[23]
0.91˝
Across Flats SW
[28.6] / 1. 13˝
All speci fications are subject to change without notice.
All sales subject to standard terms and conditions.
[Ø50]
©2018 Ashcroft Inc. 510-511_welded_seal_ds_RevD_Ltr_09-18
ashcroft.com
info@ashcroft.com
1.800.328.8258
3.86˝
[33]
1.30˝
[23]
0.91˝
Across Flats SW
[28.6] / 1. 13˝
[Ø37.5]
1.48˝
/8 - 27 NPT
1
Across
Flats SW
[27] / 1.06˝
1
/2 NPT
Process
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