Ashcroft 400, 500 Specifications
Data Sheet
400-401/500-501 Threaded All-Welded Diaphragm Seals
FEATURES
All welded construction ensures a leak-tight,
tamper-proof seal
All 316L SS construction resists corrosive attack
from a wide variety of process media
Flushing connection optional
TYPICAL USES
Oil and Gas
Refineries
Chemical and Petrochemical
Water and Wastewater
NACE Compliant Processes
Biogas and Biodiesel
SPECIFICATIONS
Fill Fluid: Glycerin, Silicone, Halocarbon®, Syltherm®
(see Table 2 on page 2 for more fill fluid options)
Pressure Rating
(MAWP):
Connection Style: 400, 500: Threaded
Process Connection
Size:
Instrument Connection
Size:
Added Tolerance: ±0.5% typical
Approvals: CRN, NACE
WETTED COMPONENTS
Diaphragm Bottom Housing
316L SS
Hastelloy® C-276
Monel® 400
Titanium
Tantalum
NON-WETTED COMPONENTS
Top Housing Bolts/Clamp Rings Nuts
316L SS
Hastelloy® C-276
Monel®
Titanium
400/401: 4,400 psi
400 (XHP OPT.): 9,000 psi
401 (XHP OPT.): 5,000 psi
500/501: 500 psi
401, 501: Threaded with flushing port
1
⁄4 to 11⁄2 NPT Female
1
⁄4 to 1 NPT Male
1
⁄4 or 1⁄2 NPT Female
316L SS
Hastelloy® C-276
Hastelloy® C-22
Monel®
Titanium
Carbon steel SS
400
Threaded All-Welded
Diaphragm Seal
KEY BENEFITS
• Continuous duty design
• Minimized fill volume
• Suitable for pressures up to 9,000 psi
500
Threaded All-Welded
Diaphragm Seal
All speci fications are subject to change without notice.
All sales subject to standard terms and conditions.
©2018 Ashcroft Inc. 400-500_ds1_seal _LR , Rev D, 04/18
of 41
ashcroft.com
info@ashcroft.com
1.800.328.8258
Data Sheet
400-401/500-501 Threaded All-Welded Diaphragm Seals
TABLE 1 - OPTIONS
Code Option 400 401 500 501 Notes
LD SS locking device • •
PU Pipe plug for flushing connection • • Plug will match bottom housing material
HB Hastelloy® C-276 upper housing • • • •
SE SS rings and bolts • • 1,500 psi Max., 5,000 psi Max. with XHP
HP High-pressure clamp rings • • 9,000 psi Max., 5,000 psi Max. with SE
6B Cleaned for oxygen service • • • •
AW Single ½ NPT flushing connection • • ¾ NPT Female or smaller process connection
DB Dual ½ NPT flushing connections • • ¾ NPT Female or smaller process connection
DK Dual ¼ NPT flushing connections • •
DU Instrument welded to seal • • • •
MQ Positive material identification • • • •
W1 Dye penetrant testing • • • •
CD-5 NACE compliance certificate • • • • Stainless, Hastelloy®, or Monel® wetted materials
CD-6 Typical material certification • • • •
ORDERING CODE Example:
Process Connection Size
02 - ¼ NPT Male (400, 500 only) 02
04 - ½ NPT Male (400, 500 only)
06 - ¾ NPT Male (400, 500 only)
08 - 1 NPT Male (400, 500 only)
25 - ¼ NPT Female
50 - ½ NPT Female
75 - ¾ NPT Female
10 - 1 NPT Female
15 - 1½ NPT Female
Diaphragm Seal Type
4 - 400 Series All-welded clamped seal, threaded process connection 4
5 - 500 Series All-welded seal without clamps, threaded process connection
Flushing Port
00 - No flushing port 00
01 - With flushing port
Diaphragm Material
S - 316L SS S
H - Hastelloy® C-276
J - Hastelloy® C-22
U - Tantalum (only available with Monel® top and lower housing)
G - Hastelloy® B
P - K-Monel® (only available with Monel® top and lower housing)
Ti - Titanium (only available with a Titanium top and lower housing)
Bottom Housing Material
S - 316L SS S
H - Hastelloy® C-276
J - Hastelloy® C-22
M - Monel® (includes Monel® top housing standard)
TI - Titanium (includes Titanium top and housing standard)
Instrument Connection Size
02T - ¼ NPT Female 02T
04T - ½ NPT Female
Options (if choosing an option(s) must include an “X”)
Fill Fluid (see table 2 on page 3 for more available fill fluids)
CG - Glycerin
CK - Silicone SF-96 CK
CF - Halocarbon
Optional Features (see Table 1 above for option list)
HP - High-pressure clamp rings HP
®
02 4 00 S S 02T XCK HP
X__
All speci fications are subject to change without notice.
All sales subject to standard terms and conditions.
©2018 Ashcroft Inc. 400-500_ds1_seal _LR , Rev D, 04/18
of 42
ashcroft.com
info@ashcroft.com
1.800.328.8258
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