702 ASHCROFT | Alldatasheet
Document overview
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Technical content
FEATURES
Lar ge diaphragm provides ample displacement for low pressure applications TYPICAL USES Oil and Gas Refineries Chemical and Petr ochemical W ater and Wastewater NACE compliant Processes (Sour Gas Separation) Biogas and Biodiesel 702-703 Flanged Seal SPECIFICATIONS Connection Style: 702: Flanged 703: Flanged with flushing port Process Connection Size: ½, ¾, 1, 1½, 2 or 3 NPS Instrument Connection Size: 1/4 or ½ NPT Female Pressure Rating (MAWP): Dictated by ASME flange ratings (see table 1 on page 2) Added Tolerance: ±0.5% typical WETTED COMPONENTS Diaphragm Bottom Housing
316 SS, Tantalum, Titanium,
Hastelloy® B, Hastelloy® C 276, K-Monel® 316SS, Tantalum, Titanium, Hastelloy® B, Hastelloy® C 276, Monel®, Carpenter® 20 NON-WETTED COMPONENTS Top Housing Assembly Studs 316L SS Carbon steel, 316 SS (optional) KEY BENEFITS
- Diaphragm welded to top housing eliminates the risk of fill fluid loss
- Large displacement to drive low pressure instrumentation
- Optimal for high-pressure, low-differential pressure applications All specifications are subject to change without notice. All sales subject to standard terms and conditions. ©2022 Ashcroft Inc. 702-703_seal_ds1_RevC_01-19-22 ashcroft.com info@ashcroft.com 1.800.328.8258 1 of 4 702/703 Flanged Diaphragm Seal Data Sheet
Maximum Allowable Pressure (psi) Temp. (°F) FLANGE CLASS 150 300 600 900 1500 2500 <1000 275 750 1440 2160 3600 6000 200 230 600 1200 1800 3000 5000 300 205 540 1075 1615 2690 4480 400 190 495 995 1490 2485 4140 500 170 465 930 1395 2330 3880 600 140 440 885 1325 2210 3680 650 125 430 865 1295 2160 3600 700 110 420 845 1265 2110 2520 750 95 415 825 1240 2065 3440 800 80 405 810 1215 2030 3380 850 65 395 790 1190 1980 3300 900 50 390 780 1165 1945 3240 950 35 380 765 1145 1910 3180 10000 20 355 710 1065 1770 2950 CARBON STEEL FLANGE Maximum Allowable Pressure (psi) Temp. (°F) FLANGE CLASS 150 300 600 900 1500 2500 <1000 285 740 1480 2220 3705 6170 200 260 675 1350 2025 3375 5625 300 230 655 1315 1970 3280 5470 400 200 635 1270 1900 3170 5280 500 170 600 1200 1795 2995 4990 600 140 550 1095 1640 2735 4560 650 125 535 1075 1610 2685 4475 700 110 535 1065 1600 2665 4440 750 95 505 1010 1510 2520 4200 800 80 410 825 1235 2060 3430 850 65 270 535 805 1340 2230 900 50 170 345 515 860 1430 950 35 105 205 310 515 860 10000 20 50 105 155 280 430 TABLE 2 - FILL FLUIDS Fill Fluid Temperature Viscosity (cSt at 70ºF (21ºC)) Variation Code Notes Glycerin (food grade) 0°F to 400°F (-18°C to 204°C) 1,300 CG Direct-mounting only. Not for use with vacuum service 50 cSt Silicone -40°F to 500°F (-40°C to 260°C) 50 CK 10 cSt Silicone -40°F to 500°F (-40°C to 260°C) 10 DJ Halocarbon® 4.2 -70°F to 300°F (-57°C to 199°C) 4.2 CF For use with oxygen/ oxidizing process media Slytherm® 800 -40°F to 750°F (-40°C to 400°C) 10 HA High temperature applications Syltherm® XLT -150°F to 500°F (-100°C to 260°C) 1.4 CC Low temperature applications Calflo® AF -20°F to 600°F (-29°C to 316°C) 60 KF High temperature, silicone-free Mineral Oil 10°F to 400°F (-12°C to 204°C) 75 MY Neobee® M-20 (food grade) 5°F to 400°F (-15°C to 204°C) 9.5 NM Silicone (food grade) -40°F to 500°F (-40°C to 260°C) 350 CZ Distilled Water 40°F to 185°F (4°C to 85°C) 0.9 FJ 50/50 Glycerin/Water 15°F to 200°F (-9°C to 93°C) 30 GH Propylene Glycol -50°F to 325°F (-46°C to 163°C) 54 CV Ethylene Glycol 20°F to 325°F (-7°C to 163°C) 14 FK 50/50 Ethylene Glycol/Water -25°F to 190°F (-32°C to 88°C) 2.9 CT 80/20 Glycerin/Water 15°F to 225°F (-9°C to 107°C) 270 GR 95/5 Water/Propylene Glycol 40°F to 185°F (4°C to 85°C) 1.0 PY All specifications are subject to change without notice. All sales subject to standard terms and conditions. ©2022 Ashcroft Inc. 702-703_seal_ds1_RevC_01-19-22 ashcroft.com info@ashcroft.com 1.800.328.8258 2 of 4 702/703 Flanged Diaphragm Seal Data Sheet
ORDERING CODE Example: 50 703 S S 02T XCK PU 150 RF Process Connection Size 50 - ½ NPS 50 75 - ¾ NPS 10 - 1 NPS 15 - 1½ NPS 20 - 2 NPS 30 - 3 NPS Seal Type 702 - High displacement seal, flanged process connection 703 - High displacement seal, flanged process connection with flushing connection 703 Diaphragm Material S - 316L Stainless steel (Supplied Standard) S P - Monel ® 400 U - Tantalum G - Hastelloy ® B H - Hastelloy ® C-276 Ti - Titanium Bottom Housing Material S - 316L Stainless steel S M - Monel ® 400 D - Carpenter 20 ® G - Hastelloy ® B H - Hastelloy ® C-276 J - Hastelloy ® C-22 TI - Titanium B - Steel Instrument Connection Size 02T - ¼ NPT Female 02T 04T - ½ NPT Female Options (if choosing option(s) must include an “X”) X__ Fill Fluid (See Table 2 on page 2 for more available fluids) CK - 50 cSt Silicone CK Optional Features PU - Pipe plug for flushing connection (703 only) PU DU - Welded to top housing SB - Stainless steel bolts and studs 6B - Cleaned for oxygen service Flange Rating 150 - 150 class ASME 150 300 - 300 class ASME Flange Types (contact Ashcroft for alternate flange types) RF - Raised Face RF RJ - Ring Joint FF - Flat Face When selecting an instrument, refer to the Min/Max Guide for compatibility with this diaphragm seal or scan the QR code to the right. All specifications are subject to change without notice. All sales subject to standard terms and conditions. ©2022 Ashcroft Inc. 702-703_seal_ds1_RevC_01-19-22 ashcroft.com info@ashcroft.com 1.800.328.8258 3 of 4 702/703 Flanged Diaphragm Seal Data Sheet
DIMENSIONS in [ ] are millimeters
150 Class Flange Rating
300 Class Flange Rating
TYPES 702 & 703 L – THREADED (with and without flushing connection) “D” Bottom of Housing to C of ¼ NPT Flushing Port (Type 703 only) L A B C For reference only, consult Ashcroft for specific dimensional drawings All specifications are subject to change without notice. All sales subject to standard terms and conditions. ©2022 Ashcroft Inc. 702-703_seal_ds1_RevC_01-19-22 ashcroft.com info@ashcroft.com 1.800.328.8258 4 of 4 702/703 Flanged Diaphragm Seal Data Sheet