WISE P791/P792 Diaphragm Seal for Pressure Instruments

Welded diaphragm seals that isolate pressure instruments from corrosive, viscous, solids-laden or solidifying media. P791 serves gauge pressure, P792 differential pressure applications.

Key features

Thread, "I" flange, flat flange, wafer, flush and extended designs
Diaphragms in 316L SS, Hastelloy C-276, Titanium, Tantalum, Monel
ASME, JIS and DIN flange ratings
Optional flushing ring and isolation valve
Fill fluids for food, low temp, high temp/vacuum and oxygen service

Specifications

Design	Welded diaphragm, hydraulic fill transmission
Thread connection	PT, PF, NPT, BSPT, BSPF, NPS
Flange connection	ASME B16.5 Class 150-2500, JIS 5K-63K, DIN 6-40 bar
Diaphragm	316L SS, Hastelloy C-276, Titanium, Tantalum, Monel
Upper flange	304SS, 316SS, Titanium, Monel
Capillary	Ø3.0 mm 316L; flexible tube Ø7.5 mm 304, PVC coated
Extended length	50, 100, 150, 200 mm (extended type)
Filling liquid	Silicone oil std.; options -50~315 °C range
Ambient temperature	-20~65 °C
PTFE lining	Available up to 7 MPa (coating)
Ordering options	Flange configuration, materials, connection, extension, tube length, fill, flushing ring
Source	WISE data sheet PD07-10

P791		Service: Gauge pressure \| Fill: Silicone
P792		Service: Differential \| Fill: Silicone

Diaphragm SealsWISE

2 product codes available in this family

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WISE P791/P792 Diaphragm Seal for Pressure Instruments

Brand WISE·Diaphragm Seals

Available part numbers (2)

P791, P792

How to order

Send the WISE part numbers and quantities through our RFQ form or to info@prosourcemro.com. We confirm price, availability and lead time within 1 business day — no account needed.

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Product codes & specifications

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RFQ List (0)

	Product code	Spec
	P791	Service: Gauge pressure \| Fill: Silicone
	P792	Service: Differential \| Fill: Silicone

Need a different model, or a part not listed here? Send us your parts list →

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WISE P791/P792 Diaphragm Seal for Pressure Instruments