Cat16 R2

Manufacturing, Engineering and Sales Since 1938

ACH

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Thermocouple Heads - Black Nylon, White Polypropylene, & Gray Delrin

Plastic Thermocouple Head Material Characteristics - √ Delrin© (Grey): Delrin is a grey pigmented acetal homopolymer made from Dupont resin. It is resistant to most acids, alkalies, sea water and has a maximum service temperature rating of 275°F or 135°C . Delrin is not FDA approved for sanitary applications. √ Nylon (Black): Nylon provides excellent electrical insulation and chemical resistance. It has a maximum service temperature rating of 350°F or 176.6°C Nylon is not FDA approved for sanitary applications. √ Polypropylene (Black): Black Polypropylene is not approved for sanitary applications. It has excellent resistance to organic solvents, degreasing agents, acids, alkalies and most chemicals. Polypropylene has poor resistance to aliphatic and clorinated solvents. Polypropylene has a maximum service temperature rating of 198°F or 92.2°C and will start to distort its shape after 220°F or 104.4°C . √ Polypropylene (White): White Polypropylene is approved for sanitary applications. It has excellent resistance to organic solvents, degreasing agents, acids, alkalies and most chemicals. Polypropylene has poor resistance to aliphatic and clorinated solvents. Polypropylene has a maximum service temperature rating of 198°F or 92.2°C and will start to distort its shape after 220°F or 104.4°C .

NH - Nylon Head - Black, Screw Cover Part Process Conduit Block Terminals/

Dimensions/

Number

Thread Thread Included

Wires

NEMA Rating

Figure

Height 3” or 76.2 mm

1

Width 2.8” or 71.1 mm Weight 3.9 oz. or 110 g.

NPT 1/2”

NPT 1/2”

NHS

AWTS

Two / 2

NHD

1/2”

1/2”

AWTD

Four / 4

NFPA Rating none

NH

Temperature Rating:

PPH - Plastic Head - White FDA Polypropylene or Delrin, Screw Cover Part Process Conduit Terminals/ Temperature Dimensions/

Number

Thread Thread

Wires

Rating

NEMA Rating

Figure

3

White FDA Polypropylene

NPT

NPT

198°F or 92.2°C

Height 3.2” or 81.3 mm

PPH

1/2”

3/4”

Three / 3

Non – FDA Delrin©

Width 2.8” or 71.1 mm

275°F or 135°C

DH

1/2”

3/4”

Three / 3

NFPA Rating 4x

PPH & DHD

PPSH - Plastic Sanitary Head - White FDA Polypropylene or Delrin, Screw Cover Part Process Conduit Block Terminals/ Dimensions/ Temperature

Number

Thread Thread Included

Wires

Rating

NEMA Rating

Figure

White FDA Polypropylene

4

NPT

NPT

198°F or 92.2°C

Height 3.2” or 81.3 mm

PPSHD

1/2”

1/2”

PPSD

Four / 4

Non – FDA Delrin©

Width 2.8” or 71.1 mm

275°F or 135°C

DSHD

1/2”

1/2”

PPSD

Four / 4

NFPA Rating 4x

PPSH & DSHD

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