Ashcroft 310, 315 Specifications
Data Sheet
310, 315 All-Welded “Mini” Diaphragm Seal
FEATURES
No gaskets or bolts
Available with 1⁄8 NPT flushing connection
Designed for use with transducers and
3½˝ or smaller gauges
TYPICAL USES
Oil and gas
Chemical processes
Process equipment
SPECIFICATIONS
Connection Style: 310: All-welded
Process Connection Size:
Instrument Connection
Size:
Pressure Rating (MAWP): 2,500 psi
Added Tolerance: ±0.5% typical
Wetted Components: Diaphragm & bottom housing
Non-Wetted Components: Top housing: 316L SS
WETTED COMPONENTS
Diaphragm Material Bottom Housing Material
See ordering code on page 2 See ordering code on page 2
NON-WETTED COMPONENTS
315: All-welded with flushing connection
8 to 1 NPT Male, ¼ or ½ NPT Female
310: ¹⁄
315: ¼ or ½ NPT Female
1
⁄8 or ¼ NPT Female
Top Housing
316L SS
310
Threaded Seal
KEY BENEFITS
• Protects instrumentation in tight spaces
• Eliminates potential leak path with all-welded
construction
• Low fill volume reduces temperature effects
on instrument accuracy
All speci fications are subject to change without notice.
All sales subject to standard terms and conditions.
©2018 Ashcroft Inc. 310-315_seal_ds_RevC_07-18
of 31
ashcroft.com
info@ashcroft.com
1.800.328.8258
Data Sheet
310, 315 All-Welded “Mini” Diaphragm Seal
ORDERING CODE Example:
Process Connection Size
1
⁄8 NPT Male, (avail able with 310 only) 01
01 -
02 - ¼ NPT Male, (availab le with 310 only)
04 - ½ NPT Male, (availab le with 310 only)
06 - ¾ NPT Ma le, (available with 310 only)
08 - 1 NPT Male, (available with 310 only)
25 - ¼ NPT Female
50 - ½ NPT Female
Se al Typ e
310 - All-welde d Mini seal no flushin g port 310
315 - All-welded Mini seal with flushing por t connection
Diaphragm Material
S - 316L SS S
H - Hastelloy
U - Tantalum
P - Monel
Bottom Housing Material
S - 316L SS S
H - Hastelloy
M - Monel
G - Hastelloy® B-2
Instrument Connection Size
01T -
02T - ¼ NPT Female
Opti ons (i f choos ing an o ptio n(s) must incl ude an “ X”)
Filling Fluid
CG - Glycerin
CK - Silicon 50cST CK
CF - Halocarbon
See Filling Fluid Table Below
Optional Features
PU - Pipe Plug for flushing connection (Mu st match bottom hou sing mate rial; 315 seal on ly)
NH - SS instrument t ag NH
NN - Paper instrument tag
DU - Instr ument welded to sea l
MQ - Positive material identi fication
W1 - Dye pene trant testing
6B - Cleaned for oxygen ser vice
®
C-276
®
(Must be ordered with Mone l® bottom housing)
®
C-276
®
1
⁄8 NPT Female 01T
®
01 310 S S 01T XCK NH
X__
Filling Fluid Table
Fill Service Connection to Instrument Temperature Range °F Code
Glycerin Pressure Direct Only 0/400 CG
Silicone Pressure/Vacuum Direct or Flexible Line –40/500 CK
Halocarbon
of strong oxidizing agent
Pressure/Vacuum in presence
®
Direct or Flexible Line –70/300 CF
Syltherm® Pressure Direct or Flexible Line –40/750 HA
All speci fications are subject to change without notice.
All sales subject to standard terms and conditions.
©2018 Ashcroft Inc. 310-315_seal_ds_RevC_07-18
ashcroft.com
info@ashcroft.com
1.800.328.8258
of 32
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