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94020 Conservation Vent (Pressure & Vacuum)
Brand: Shand & Jurs
The Shand & Jurs Model 94020 Conservation Vent is designed utilizing over 90 years of experience in producing high quality and dependable conservation fittings.
Continued design improvements provide these vents with high efficiency, maximum flow capacity and minimum leakage. The easily serviceable configuration and lightweight construction reduces maintenance and installation costs.
A variety of construction materials are available as part of the standard design which are ideally suited for highly corrosive and toxic product applications.
Aluminum, 316 Stainless Steel or Carbon Steel body vents comes standard with integral seats or optional replaceable seats. Cast Iron and Ductile Iron bodies only with 316 SS replaceable seats.
The standard FEP diaphragm is “Air Cushion Seated” for high resistance to adhesion of ice and gum formation thus assuring protection against pallet sticking to the seating surface.
The body is self-draining towards the inlet which keep condensates from the seating surfaces.
The carefully engineered body, seat, and pallet assembly results in a superior combination of tight sealing and high capacity at low over-pressure with minimal blow down.
Conservation Vents are available in a full range of sizes and configurations, such as open vent, closed vent (pipe-away), cryogenic hoods and flame snuffers.
Standard pressure and vacuum settings are 0.5 oz/in2. The 94020 Conservation Vent is available with optional pressure and vacuum limit switches and visual indicators.
Expanda-Seal
Shand & Jurs “Expanda-Seal” option is available on all pressure pallet assemblies. This feature significantly reduces leakage. The ballooning effect of the FEP Diaphragm effectively seals the valve.
The “Expanda-Seal” feature ensures less than 0.5 SCFH of air at 95% of the set point.
Features- Suitable materials available for corrosive/extreme temperature service pallet reaction lip for smooth lift and reseating
- Pallet reaction lip for smooth lift and reseating
- Vertical lift pallets assure reliable operation and maximum flow
- Floating diaphragm results in a positive seal and minimal blow-down
- “All weather” coating, insulation jackets and steam jacketing options available
- Capacity certified to API Standards
Specifications
Brand
Sizes
- 2’’, 3’’, 4’’, 6’’, 8’’, 10” & 12”
Settings
- Standard Pressure & Vacuum: 0.5 oz./in2 (.865 in. W.C.)
Temperature Range
- Process Temperature ranges for body material:
- -65OF to 250OF (Aluminum)
- -65OF to 350OF (316 Stainless Steel)
- -20OF to 350OF (Carbon Steel)
- -20OF to 325OF (Iron)
Maximum Setting W/O Modification
- 2”: 12 oz./in2 8 oz./in2
- 3”: 12 oz./in2 9 oz./in2
- 4”: 12 oz./in2 11 oz./in2
- 6”: 10 oz./in2 10 oz./in2
- 8”: 8 oz./in2 8 oz./in2
- 10”: 6 oz./in2 6 oz./in2
- 12”: 5 oz./in2 5 oz./in2
Type of Flange Connection
- Screwed or flanged for: 2” & 3” sizes Flanged for: 4”, 6”, 8”, 10” & 12”sizes Raised face flange available, except for aluminum body material.
Expanda-Seal Pressure Setting
- 1.5 oz./in2 Min. (Consult Factory for lower settings)
Body
- Cast Aluminum, Cast Steel, Cast Iron, Ductile Iron or 316 Stainless Steel
Closed Vent Cover
- Aluminum, Steel or Stainless Steel
Hood
- Aluminum or Stainless Steel
Pallet/Retainer
- Aluminum or 316 Stainless Steel
Seat
- Aluminum or 316 Stainless Steel
Stem Guide
- Galvanized Steel or Stainless Steel
Screen
- Galvanized Steel or Stainless Steel
Diaphragm
- FEP (Fluorinated Ethylene Propylene), FKM (Fluoroelastomer), NBR (Nitrile-Butadiene), PFA (Fluoroplastic Film)
Back-up Disc
- Fiber, Glass Filled Teflon (GPTFE)
Closed Vent Cover Gasket
- Fiber, Glass Filled Teflon (GPTFE), FKM (Fluoroelastomer), NBR (Nitrile-Butadiene)