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BOSS COUPLINGS AND CLAMPS

Purpose

The purpose of the Boss Coupling and Clamp System is to supply a convenient threaded fitting needed to connect two lengths of hose, or a single length to a male or female threaded (NPT) outlet on any type of equipment. The spud part of the coupling serves as one half of the connection and is usually fixed permanently to the equipment. The stem and nut attached (clamped) to the hose is the other half. The two halves are connected by rotating the wing nut on the spud, to achieve a mechanical as well as a pressure seal.

Services

The Boss Coupling and Clamp System is designed as an all purpose system, universally recommended for steam connections. They are also widely used with equal efficiency for high or low pressure air, water, liquid petroleum gas, fluid petroleum products, chemicals, potable fluids and almost any other type of fluid or gas. (Consult Tampa Rubber & Gasket for specific media capabilities.) They can be applied to all types of rubber, synthetic, plastic, metallic (with special stems) or semi-metallic hose.

EZ-Boss Ground Joint Seal

EZ-Boss non-metallic polymer seat is not subject to corrosion and offers resistance to chemicals and steam found in manufacturing facilities. A precisely machined recess holds the seat firmly in place, allowing it to absorb harsh punishment. Recommend for steam service up to 450ºF; easy to seal; works with existing Boss Ground Joint Stems.

EZ-Boss Female Coupling

Female Ground Joint Fitting
-Coupling with Female SpudStemWing NutFemale SpudMale SpudDouble Spud
SizesPart #Part #Part #Part #Part #Part #
1/4" *GF1GBABA2GBC--
3/8" *GF3GCACBGCCGMC-
1/2"GF6GB1B2GB3GM3GDB3
3/4"GF26GB6B12GB8GM8GDB13
1"GF36GB11B12GB13GM13GDB13
1-1/4"GF51GB16B17GB18GM18GDB23
1-1/2"GF61GB21B17GB23GM23GDB23
2"GF81GB26B27GB28GM28GDB28
2-1/2"GF96GB31B32GB33GM33GDB33
3"GF111GB36B37GB38GM38GDB38
4"GF141GB46B47GB48--
6" *GF201GB66B67GB68--
*Note: 1/4", 3/8" & 6" come only with copper seat spuds.
Note: These couplings are also available in red brass and stainless steel.

Boss Washer Seal

-Coupling with Female SpudStemWing NutFemale SpudMale SpudDouble SpudWasher*
SizesPart #Part #Part #Part #Part #Part #Part #
3/8"WF3CACBCCWMC-WBC
1/2"WF6B1B2B3WM3DB3W2
3/4"WF26B6B12B8WM8DB13W12
1"WF36B11B12B13WM13DB13W12
1-1/4"WF51B16B17B18WM18DB23W17
1-1/2"WF61B21B17B23WM23DB23W17
2"WF81B26B27B28WM28DB28W27
2-1/2"WF96B31B32B33WM33DB33W32
3"WF111B36B37B38WM38DB38W37
4"WF141B46B47B48--W47
6"WF201B66B67B68--W67
*Note: Washer is a Klinger Kevlar reinforced, Nitrile bonded material

Boss Male Stem

Boss Males
Steel Bar StockMalleable Iron316 Stainless SteelBrass
Hose x NPT SizePart #SizePart #SizePart #SizePart #
1/4" x 1/8"MS4X2--1/2"RMS1--
1/4" x 1/4"MSA--3/4"RMS63/4"BMS6
1/4" x 3/8"MSB--1"RMS111"BMS11
3/8" x 1/4"MS6X41-1/4"MS161-1/4"RMS161-1/4"BMS16
3/8" x 3/8"MSC1-1/2"MS211-1/2"RMS211-1/2"BMS21
3/8" x 1/2"MS6X82"MS262"RMS262"BMS26
1/2" x 1/4"MS8X42-1/2"MS312-1/2"RMS31--
1/2" x 3/8"MS8X63"MS363"RMS363"BMS36
1/2" x 1/2"MS14"MS46----
1/2" x 3/4"MS8X12------
3/4" x 1/2"MS12X8------
3/4" x 3/4"MS6------
3/4" x 1"MS12X16------
1" x 3/4"MS16X12------
1" x 1"MS11------

LP-Boss Male Stem

Non-porous tubular steel for volatile materials
Boss Male Stem
Plated, Male NPT End
SizePart #
1-1/4"LP16
1-1/2"LP21
2"LP26
2-1/2"LP31
3"LP36
4"LP46
6"LP66
Unplated, Beveled End
2"LPB26
3"LPB36

Boss Hose Mender

Collars to engage grip fingers of Boss Clamps
Boss Hose Mender
SizePart #
1/2"M1
3/4"M6
1"M11
1-1/4"M16
1-1/2"M21
2"M26
2-1/2"M31
3"M36
4"M46
6"M66

Boss Bolt-On Clamps

Boss Clamps
The bolts used in the Boss interlocking clamps are not standard bolts. They vary from standard bolts in length versus diameter, thread length and material hardness. These bolts can be retorqued, but it is not recommended that they be reused, as they are designed for a single bend only. We recommend using only factory supplied replacement bolts.
 
Note: The torque values are the same for stainless steel and malleable iron clamps.
 
Click here for clamp installation procedure.

 
2-Bolt Type Boss Clamps
Hose IDHose ODPlated Malleable IronStainless SteelBrass
SizeFrom:To:Part #Part #Torque**Part #Torque**
1/4"9/16"21/32"BD-6--
3/8"11/16"7/8"CD-6--
1/2"13/16"15/16"DD-6--
1/2"15/16"1-1/16"B4RB412BB410
1/2"1-1/16"1-3/16"B5-12--
3/4"1-5/32"1-9/32"BU9S-21--
3/4"1-3/16"1-5/16"BU9RBU921BBU918
3/4"1-5/16"1-1/2"B9RB921BB918
3/4"1-1/2"1-11/16"B10-21--

4-Bolt Type Boss Clamps
Hose IDHose ODPlated Malleable IronStainless SteelBrass
SizeFrom:To:Part #Part #Torque**Part #Torque**
1/2"29/32"1-1/32"968-6--
1"1-13/32"1-9/16"156*-21--
1"1-17/32"1-23/32"BU14RBU1421BBU1418
1"1-11/16"1-15/16"B14RB1421BB1418
1"1-15/16"2-1/8"B15-21--
1-1/4"1-1/2"1-25/32"BU18-40--
1-1/4"1-11/16"1-7/8"187*-21--
1-1/4"1-25/32"2-3/32"BU19-40--
1-1/4"1-7/8"2-1/16"206*-21--
1-1/4"2-1/8"2-3/8"B19RB1940BB1928
1-1/2"1-13/16"2"BU22-40--
1-1/2"2"2-7/32"B22-40--
1-1/2"2"2-1/8"212*-21--
1-1/2"2-1/16"2-1/4"225*-40--
1-1/2"2-3/16"2-3/8"BU24RBU2440BBU2428
1-1/2"2-3/8"2-9/16"B24RB2440BB2428
1-1/2"2-9/16"2-3/4"B25-40--
2"2-1/4"2-1/2"250*-40--
2"2-11/32"2-17/32"BU28-60--
2"2-1/2"2-3/4"275*-40--
2"2-1/2"2-25/32"BU29RBU2960BBU2940
2"2-3/4"3-1/16"B29RB2960BB2940
2"2-3/4"3-1/16"306*-60--
2"3-3/32"3-7/16"B30-60--
2-1/2"3-1/16"3-1/2"350*-60--
2-1/2"3-3/32"3-7/16"BU34-60--
2-1/2"3-1/2"3-15/16"B34-150--
3"3-1/2"3-3/4"375*-60--
3"3-1/2"3-15/16"BU35-150--
3"3-3/4"4"401*-150--
3"3-13/16"4-1/16"B35-150--
3"4"4-3/16"418*-200--
3"4-1/16"4-7/16"B39-200--
3"4-3/16"4-1/2"450*-200--
*Note: Starred clamps have four gripping fingers; all others have two.

6-Bolt Type Boss Clamps
Hose IDHose ODPlated Malleable Iron
SizeFrom:To:Part #Torque**
3"4-1/4"4-13/16"BS39150
4"4-5/8"5"B45150
4"4-7/8"5-1/4"BS49200
4"5-1/4"5-19/32"BU49200
4"5-17/32"5-15/16"B49200
6"6-7/8"7-3/8"750200
6"7-1/2"8"850200
**Note: Recommended torque rating in Ft.-Lbs.

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Tampa Rubber & Gasket Co., Inc.

215 North 20th Street
Tampa, FL, USA 33605
Ph-813-247-3647 Fax-813-247-3180
Toll Free-800-940-4673 E-Mail - The Post Office
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We accept Visa, Mastercard, American Express & Discover


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