Richards Thermocouple Cat17 Brn

Manufacturing, Engineering and Sales Since 1938

ACH

Phone: 617.527.4385 Fax: 617.964.3746 Email: sales@asrichards.com

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 Width 2.8” or 71.1 mm Weight 3.9 oz. or 110 g. NFPA Rating none

19

NPT 1/2”

NPT 1/2”

Two / 2

NHS

AWTS

1/2”

1/2”

Four / 4

NHD

AWTD

Temperature Rating: 350°F or 92.2°C

NH

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

Number

Thread Thread

Wires

Rating

NEMA Rating

Figure

20

White FDA Polypropylene

NPT

NPT

Height 3.2” or 81.3 mm

198°F or 92.2°C

PPH

1/2”

3/4”

Three / 3

Width 2.8” or 71.1 mm

Non – FDA Delrin©

275°F or

PPH & DHD

DH

1/2”

3/4”

Three / 3

NFPA Rating

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

21

NPT

NPT

Height 3.2” or 81.3 mm

198°F or 92.2°C

PPSHD

PPSD

1/2”

1/2”

Four / 4

Width 2.8” or 71.1 mm

Non – FDA Delrin©

275°F or 135°C

DSHD

PPSD

1/2”

1/2”

Four / 4

NFPA Rating

PPSH & DSHD

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