Hinged Heads and Blocks
Hinged Heads – Flip Top
• Nema 4 Rated
• Flip-Top Design for Easy Access and Closure
• Hinge Pins and Latches of Stainless Steel
• Silicone Gasket, Temperature Rated to 6000 F.
• Provisions for Security Tags
• Accepts BH741, BH742 & BH743 Series Blocks
• Accepts BH684 Series Blocks (BH684-6 in polypropylene heads only)
• Polypropylene Continuous Rating: 1980 F.
• Conduit Port Size: 3/4″ NPT
ADD PREFIX “B” TO PART NUMBERS TO ORDER
Plastic Terminal Blocks
• Will Fit BH701 – BH709 Heads
• Will Fit BH680, 682 & BH683 Series Heads
• Stepped Center Hole for Spring Loading
ADD PREFIX “B” TO PART NUMBERS TO ORDER
Aluminum Screw Cover Thermocouple Heads & Blocks
• Meets NEMA 4 requirements for indoor/outdoor nonhazardous use
• 825F Graphite Gasket
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Cast Iron Screw Cover Thermocouple Heads & Blocks
• Meets NEMA 4 requirements for indoor/outdoor nonhazardous use
• 825F Graphite Gasket
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Stainless Steel Screw Cover Thermocouple Heads & Blocks
• Meets NEMA 4X. FDA requirements for indoor/outdoor non-hazardous use
• 825F Graphite Gasket
ADD PREFIX “B” TO PART NUMBERS TO ORDER
Terminal Blocks
11/16″ Thick Single Block Brass Terminals
PART NUMBERS
BH741
BH695 Single Block, Brass Terminals
1-5/32″ Thick Duplex Block Brass Terminals
PART NUMBER BH742
7/8″ Thick Triplex Block
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Nylon Heads & Hinged Aluminum Heads and Blocks
(Din Standard)
Nylon Head – 1/2″ x 1/2″ NPT
Note: UL Rated
PART NUMBER BH770
Aluminum Hinged Head 1/2″ x 1/2″ NPT
PART NUMBER BH771
Terminal Blocks
Ceramic Standard Terminal Blocks
No Base Plate
PART NUMBERS
BH772-2 2 Terminal
BH772-3 3 Terminal
BH772-4 4 Terminal
Ceramic Terminal Blocks w/ Solder Hooks
No Base Plate (Loose Base Plate Available – Inquire)
PART NUMBERS
BH773-2-N 2 Terminal
BH773-4-N 4 Terminal
BH773-6-N 6 Terminal
Spring Mount Terminal Blocks w/ Solder Hooks
Steel Base Plate
Spring Mount
PART NUMBERS
BH774-2 2 Terminal
BH774-4 4 Terminal
BH774-6 6 Terminal
Heads and Covers
Miniature Nickel-Plated Steel Heads
• 2, 3, or 4 Terminal
• “O” Ring Moisture Seal (Remove for Free Fit if Desired)
• Neoprene Cap Grommet Standard
• 1/4″ NPT Process Opening – Standard
• 1/8″ NPT Process Opening – Optional (add-1 to P/N)
• 5/16″ Compression Fitting in Cover – Optional (Add “- C” to Part Number)
PART NUMBERS
BH791 2 Terminal 1/4″ NPT Miniature Head
BH791-1 2 Terminal 1/8″ NPT Miniature Head
BH792 3 Terminal 1/4″ NPT Miniature Head
BH792-1 3 Terminal 1/8″ NPT Miniature Head
BH793 4 Terminal 1/4″ NPT Miniature Head
BH793-1 4 Terminal 1/8″ NPT Miniature Head
| Micro Heads | |
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PART NUMBERS
BH785-U-2 Single Circuit 1/8″ Sheath
BH785-U-4 Single Circuit 1/4″ Sheath
Miniature Die Cast Aluminum Screw Cover
• Miniature Head
• Burnished Die Cast Aluminum
• 2 Terminal Block, or 4 Terminal Block
• 1/2 NPT Process, 1/2 NPT Conduit
• Includes Compression Fitting Adaptor
• Includes Rubber Ferrule
PART NUMBERS
BH775-1 Head w/ 2 Terminal Block
BH775-2 Head w/ 4 Terminal Block
BH776-1 2 Terminal Block only
BH776-2 4 Terminal Block only
Thermoplastic Screw Cover Heads
The BH781-3 and BH781-6 heads are molded from white unpigmented polypropylene. Both heads meet NEMA 4X requirements for indoor or outdoor non-hazardous use to provide protection against dust, rain, splashing water and hose directed water. Although these thermoplastics are attacked by strong acids, they provide good resistance to most acid solutions, alkalines and salt water. They provide good weathering resistance to sunlight. The white polypropylene head is FDA compliant for use in sanitary applications. These heads, and the Bunan O-Ring, have a continuous use temperature rating of 2500 F. The cover is chained to the body with stainless steel chain and pins. All heads have 1/2″ NPT process openings and 3/4″ NPT conduit openings.
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Miniature Plastic Heads
Use HBPC series Braze Plugs, HCB Series Brass Compression Fittings, or HCS Series Stainless Compression Fitting for connection to TC Probe.
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Nipples and Springs
Spring-Loaded Nipples: 316 Stainless Steel – 1/2 x 1/2 NPT
NOTE: Inconel or 17-7PH Spring (Included)
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Weld/Braze Nipples
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Sheath Springs
NOTE:
• Stainless Steel or 17-7 PH
• .440 OD springs fit H743 series blocks
• Other spring loading applications
ADD PREFIX “B” TO PART NUMBERS TO ORDER
