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MODEL 501-6 LINEAR DIAPHRAGM OPERATOR
 GARZO Linear Diaphragm Operators are small diameter spring opposed rolling diaphragm operators suitable
for gas compressor applications. The series 501 operators are designed specifically to be used in
various industrial applications. The rolling diaphragm creates the perfect seal for friction free
cylinders. It is a durable, flexible membrane shaped like a top hat with the peak of the hat
resting against the end of the piston and the brim clamped between the forward and rear cylinders.
Inside the cylinder this forms a long-lasting frictionless sealed cushion of air between the
piston head and the cylinder wall. The fabric reinforced elastomer rolling diaphragms are produced
exclusively for GARZO to our exacting standards. Standard diaphragm material design allows for
operation of the cylinders in temperatures from -31°F to 248°F. Custom diaphragm material design
allows for operation of the cylinders in temperatures from -121°F to 500°F.
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The operators are designed to withstand many corrosive elements. The piston and body of the
operators are made from 100% aluminum castings which resist galvanic corrosion and eliminate the
need for painting. The diaphragm is a Dacron fabric, Buna-n impregnated, molded rolling diaphragm.
The diaphragms are designed and manufactured to withstand repeated use in industrial applications,
and the fabric prevents the elastomer from stretching in over pressure conditions. The spring has
been electro zinc plated. The piston rod is a large diameter 300 series stainless steel. All
other parts are either plated or stainless steel, making the operator suitable for offshore salt
water, natural gas, and sour gas service.
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GARZO linear diaphragm operators are designed using INSTRUMENT SOCIETY of AMERICA recognized
spring rates. The GARZO operators have strokes that follow a true linear progression. A properly
sized GARZO spring opposed diaphragm operator has as much force on the forward stroke as it does
on the return stroke.
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FEATURES
- Super Sensitivity
- Absolutely No Lubrication Required
- Low Hysteresis
- No Blow-By Leakage - 100% Leak Testing
- Solid Aluminum Construction
- Ease of Maintenance
- Wide Temperature Variations
- Designed For Use With Air or Sour Gas
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SPECIFICATIONS
- Cylinders 100% Cast Aluminum
- Piston 100% Cast Aluminum
- Rod 303 Stainless Steel
- Diaphragm Buna-N with Dacron Fabric
- Spring Zink Plated
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