Ashcroft Type 300 Series Diaphragm Seal
Clamped diaphragm seals with an elastomeric or Teflon diaphragm between top & bottom housing with clamp rings
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Shawn S.
Senior Applications Engineer
24 years at Instrumart
John A.
Applications Engineer
13 years at Instrumart
Mike K.
Manager of Outside Sales
8 years at Instrumart
Mark D.
Applications Engineer
8 years at Instrumart
Features
- Process connection sizes from 1/4 to 3in
- Variety of process connections
- Fill/bleed connection is standard
- Teflon or Viton diaphragm seals
- Rugged, flexible & fatigue resistant
- Continuous-duty design
This product is an accessory for the following products:
Stainless steel analog pressure gauge for pressures up to 30,000 psi with ±1% full scale accuracy
Designed specifically for the pharmaceutical, biotechnology & food processing markets
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$381.84
4.5 and 6 inch dial sizes, bronze Bourdon tube & socket
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$1,021.43
316 stainless steel wetted parts, 4.5 or 6 inch dial sizes
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$1,104.96
Analog differential pressure gauges constructed with a stainless steel case with a choice of aluminum, brass, or stainless steel body
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$154.14
Bellows gauge for low pressure applications available in 4.5 and 6in dial sizes
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$468.95
Analog process gauge features 0.5% accuracy & ranges up to 20,000 psi
Starting at
$146.76
Available with PLUS! Performance, pressure ranges from VAC to 30,000psi, 4.5in dial, phenolic case and blow-out back for safety
Duragauge pressure gauge designed for flush mounting
Duragauge pressure gauge with solid-front aluminum case
Analog pressure gauge with diaphragm sensing element for pressures below 15 psi
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$50.11
One multi-function gauge that acts as a mechanical pressure gauge, transducer & switch
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$866.31
Multi-functional digital gauge with optional 4-20mA output and 1 or 2 SPDT switches
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$424.80
Precision digital test gauges with industry leading accuracy
General purpose gauge with 4.5in dial that looks like a 6in dial when viewed from the front
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$158.70
1450 psi static pressure standard with optional static pressure to 3625 psi
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$3,270.72
1450 psi static pressure standard with optional static pressure to 3625 psi
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$3,270.72
Pressure transmitter with up to 0.25% accuracy designed for heavy industrial applications
Pressure transmitter designed for areas requiring explosion/flame proof approvals
Pressure transmitter designed for areas requiring intrinsically safe and non-incendive approvals
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$476.83
Ranges from 15 to 100,000 psi and ±0.1% full-scale accuracy
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$1,781.53
Low-pressure transmitters capable of DIN rail or standard panel mounting
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$202.86
0.5% accuracy, bar graph display, vacuum & compound ranges from -14.7 to 25,000 psi
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$305.70
Low-pressure transmitters capable of DIN rail or standard panel mounting
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$441.50
316L Stainless steel case and wetted parts, ±1.6% accuracy, high static pressure limits
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$1,326.85
Up to 8 times smaller than a conventional process transmitter with NEMA 4X IP65 aluminum housing
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$709.98
Rangeable wet/wet transmitter for unidirectional & bidirectional pressure measurement
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$1,067.97
Two-sensor design well suited for high differential pressure ranges
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$590.66
Ultra-low differential pressure transmitter with 0.25% accuracy & high overpressure protection
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$693.28
Versatile pressure transducer with polysilicon thin film technology & pressure ranges from vacuum to 20,000 psi
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$375.88
Sanitary pressure gauges that can be autoclaved or sterilized in place to temperatures of 300°F
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$354.41
Stainless steel 3in pocket test gauge with ±0.5% accuracy
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$192.11
Ultra-low differential pressure transmitter with 0.25% accuracy, high overpressure protection & NEMA 2 stainless steel construction
Starting at
$485.66
General purpose digital gauge ±0.5% full scale accuracy
RETIRED
The Ashcroft Type 300 Series diaphragm seal uses a clamped design with an either Teflon or Viton for the diaphragm material. The Teflon diaphragm offers corrosion resistance to most acids, caustics, alkalies, keytones, hydrocarbons, and alcohols. A fill/bleed connection is standard, which permits filling the seal and instrument simultaneously after evacuation, and allows the fill to flow into the completed unit. The continuous-duty design will prevent loss of process fluid if the pressure instrument is removed or fails.
Applications for Ashcroft Type 300 Series diaphragm seals include elevated process temperatures, corrosive services, isolation of the process for safety, suspended solids in the process, sanitary connections, replacement process dead leg, and cleaning between batches.