|
 OSECO’s STD
Rupture Disk is a pressure relieving safety device that is used in many applications. It has a 30o angular seating area and is used primarily to vent to
controlled areas or to the atmosphere.
The STD is designed for operation in applications where it is not exposed to pressures over 70% of the stamped burst
pressure. This will insure long and excellent service life.
The STD is a solid metal crowned or pre-bulged disk and is designed for a wide variety of applications.
The STD is excellent for use in gas or liquid applications. When properly installed it is
excellent for use in static or cycling service. The STD is excellent for use in high temperatures and pressures.
The STD comes in a wide variety of materials and sizes. Liners are made primarily of PFA Teflon; consult Advanced Rupture Disk Technology for specifics in regard to your particular application.
OSECO STD Rupture Disk
- Standard Sizes: 1/2”-24”, consult Advanced Rupture Disk Technology for other
available sizes
- Materials: 316 Stainless Steel, Nickel-200/201, Inconel-600, Monel-400, and Aluminum
- Pressures Range from 2 psig; special applications may require reduced pressure ranges, please consult Advanced Rupture Disk Technology.
 Vacuum service: If the STD is subjected to vacuum conditions, it may be necessary to use a vacuum support with the STD disk. The STDV (STD with
vacuum support) is designed to withstand a minimum 15psig of differential back-pressure and
can be supplied for higher back-pressures on request. If the burst pressure is high enough, vacuum supports are not required. (see table 1)- Manufacturing Range: All OSECO rupture disks are produced to meet a
Standard Manufacturing Range. The manufacturing range is a range of pressures within which the average burst pressure of test disks must fall to be acceptable
for a particular burst pressure. In many situations OSECO can manufacture STD rupture disks in reduced manufacturing ranges. Please consult Advanced Rupture Disk Technology for your particular application. (see table 2)
- Rupture Tolerance: The maximum variation from the stamped burst pressure. (see table 3)
- Minimum and maximum burst pressures are listed for all standard sizes and
standard materials. Teflon liners on one side and two sizes. (see mim/max chart) Consult Advanced Rupture Disk Technology for sizes and materials not listed.
- Sensors used with the STD rupture disk are the SVT, AMS, AMSX, and the CMS.
 Holders that can be used with the STD rupture disk are the Union Holders, the RDI insert, the RDI(P)
and the flanged bolted holders (RDH-1 through RDH-9).
Table 1 - Angular Seat STD Rupture Disks Vacuum Support Requirements
|
Disk Material
|
Full Vacuum
|
2/3-Vacuum
|
1/3-Vacuum
|
|
Nickel-200/201
|
1200 psig
|
975 psig
|
725 psig
|
|
Inconel-600
|
1200 psig
|
975 psig
|
725 psig
|
|
Monel-400
|
1200 psig
|
975 psig
|
725 psig
|
|
Hast C-276
|
1200 psig
|
975 psig
|
725 psig
|
|
316 Stainless Steel
|
1200 psig
|
975 psig
|
725 psig
|
|
Aluminum
|
450 psig
|
360 psig
|
270 psig
|
|
If the burst pressure of a rupture disk at operating temperature is below these minimum pressures, a
vacuum support is required For back pressures greater than 14.7 psi and other disk metals, consult Advanced Rupture Disk Technology.
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Table 2 - Standard Manufacturing Ranges for STD Rupture Disks
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Specified Rupture Pressure PSIG at 72o F
|
Manufacturing Range %
|
|
3-6
|
+40 to -20
|
|
7-10
|
+30 to -15
|
|
11-15
|
+20 to -10
|
|
16-25
|
+16 to -8
|
|
26-45
|
+14 to -7
|
|
46-90
|
+12 to -6
|
|
91-270
|
+10 to -5
|
|
271-500
|
+8 to -4
|
|
501-Up
|
+6 to -3
|
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Table 3 - Rupture Tolerances for STD Rupture Disks
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Marked Rupture Pressure PSIG at 72o F
|
Rupture Tolerance %
|
|
3-6
|
+22 to -22
|
|
7-10
|
+15 to -15
|
|
11-14
|
+8 to -8
|
|
15-Up
|
+5 to -5
|
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STD rupture disk today!
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