All Stainless Construction
Laminated Safety Glass Lens
Full Blow-Out Protection
Fillable Case

Accuracy: ½% on 4" and 6" gauges-
ASME B40.1 Grade 2A
1% on 2" and 2½" gauges-
ASME B40.1 Grade 1A
1.5% on 1½" gauges-
ASME B40.1 Grade A
Safe and Reliable: McDaniel designs and manufactures its gauges to minimize failure and to protect personnel and property. The use of laminated safety glass, rather than plexiglass or single strength glass, prevents dangerous pressure build-up in the case; the 2” glass breaks at 60 psi, the 2½” at 40 psi, the 4” at 15 psi and the 6” at 8 psi. The brittle glass cracks uniformly and the laminate remains intact. Additionally, the laminated safety glass won’t craze or discolor.

•300% full scale pressure without rupture of the bourdon tube.
•130% full scale pressure without loss of accuracy.
•15,000 cycles of pressure pulsation from 10% to 90% full scale at a rate of 60 times a minute. The gauge is allowed to rest for 5 minutes and then can have no greater error than 1% at any place on the dial.

McDaniel offers liquid-filled gauges for applications involving vibration or pulsation. Glycerin is an excellent damper of bourdon tube movement. Emersion of the entire measuring assembly in a protective liquid envelope provides lubrication and shuts out corrosive or dirty atmospheres — thereby minimizing wear of moving parts and prolonging gauge life significantly.

When you order a McDaniel fillable gauge you may choose to fill it yourself or you may order it factory-filled with the liquid of your choice. Thus, you can maximize inventory utility and minimize inventory cost.
Glycerin filling has a lower operating temperature limit of 32℉(0℃) undiluted. The mixture of distilled water in proportion up to 35% will lower the limit commensurately, to —40℉ (-40℃).
Silicone can extent the lower temperature limit to —60℉ (-50℃).
The maximum temperature limit is not determined by the fluid but by the gauge’s synthetic case seal. At elevated temperatures the seal may bake and lose its elasticity.

If any McDaniel gauge requires repair, down-time can be minimal because all gauges are field-repairable -- quickly and easily – with only a screwdriver needed for disassembly.

Example: