Y-M Diaphragm Seal Pressure Gauge
Y-M Diaphragm Seal Pressure Gauge
Y-M Diaphragm Seal Pressure Gauge is a complete isolation assembly of pressure gauge and diaphragm seal. Designed for high-sulfur crude oil, corrosive, viscous & crystallized media. Multiple gauge models, wetted materials and filling fluids available for petroleum & chemical industries.
Core Advantages
Complete isolation system consisting of standard pressure gauge + connector accessories + chemical diaphragm
seal. Fully separate corrosive, high-viscosity, solid-laden media from gauge internal measuring elements to prevent blockage & corrosion. Massive customizable options: multiple gauge bodies, connector fittings, seal types, wetted & diaphragm materials, filling fluids to match all harsh oil & chemical working conditions
Available Gauge Base Models
Stainless steel gauge YTH/YTF, safety gauge YTQ, shock-resistant gauge YTN, transmissible gauge YTD, electric
contact gauge YX, flameproof / intrinsically safe explosion-proof gauge, differential pressure gauge, precision gauge etc.
Industry Applications
Petroleum, high-sulfur heavy crude refinery, chlor-alkali chemical, fiber, pharmaceutical, food & sewage treatment.
Suitable for strong corrosion, high temperature, viscous, crystallized, slurry media that ordinary pressure gauges
cannot withstand. Sanitary inline seal version fits food/pharma clean pipeline requirements.
Optional Basic Information
1. Diaphragm Seal Types
Flange type: MFB open flange, MG “H” flange, ML thread, MT extended flange, MC sanitary clamp, MN nut
sanitary, MD inline sandwich, MM saddle type
Max. Static Pressure: max. 1MPa(145psi), 2.5MPa(362psi), 40MPa(5800psi), 60MPa(8700psi) (model-dependent)
2. Connector Functional Accessories
Direct connection, radiator, capillary tube, special angle elbow, rigid tube, overload protection valve, liquid damper
3. Wetted Material Options
304S.S (standard), 316L S.S, 304 lined PTFE
4. Diaphragm Corrosion Materials
316L SS, Hastelloy C-276 (HC), Monel K-400 (M), Titanium (Ti), Tantalum (Ta), PTFE coated 316L (F4), Gold-plated
316L (Au)
5. Working Filling Fluid (Temperature Adaptation)
Low-viscosity silicone oil (general), low-temp silicone oil (-55℃), high-temp silicone oil (340℃), glycerol aqueous
solution / vegetable oil (food grade), fluorocarbon oil (special aggressive media)
6. Key Technical Notes
Temperature drift correction: Rigid connection ≤0.1%FS/℃; capillary flexible connection ≤(0.1+0.025L)%FS/℃
Liquid level difference error compensation for long capillary installation
Max medium temperature for diaphragm assembly ≤200℃
Executive Standard: JB/T 8624-199
Selection Support
Please provide medium composition, pressure range, temperature, installation form, corrosion requirements and
pipeline specification. Our factory technical team will match diaphragm material, filling fluid and full assembly
model for you, and supply complete dimension drawings & ordering coding rules.