Clamps for All Industries
Central States Industrial (CSI) is the largest volume distributor of the Alfa Laval/Tri-Clover® product line in the US. We keep a variety of sizes and styles of Tri-Clamp® and swivel joint clamps in our four warehouses across the US.
Sanitary Clamp Fittings for Tri‑Clover (Tri‑Clamp Connections)
Alfa Laval Tri-Clover sanitary clamp fittings are designed for hygienic process piping systems in the food, dairy, beverage, pharmaceutical, and biotechnology industries. Available in sizes ranging from 0.5 to 12 inches and manufactured from durable 304 and 316 stainless steel, these fittings provide secure, easy-to-clean connections that support sanitary processing requirements.
Known for their durability, problem-free assembly, and exceptional strength, Alfa Laval sanitary clamp fittings continue to set the industry standard for hygienic piping components. Their precision manufacturing helps maintain product integrity while simplifying installation, maintenance, and inspection activities.
View pressure ratings for Tri-Clamp connections in the table below.
Models
Clamps are available in the following sizes: 0.5" or 0.75", 1" or 1.5", 2", 2.5", 3", 4", 6", 8", 10", 12"
Clamp Types at a Glance
Use this quick comparison to identify the Alfa Laval/Tri-Clover clamp style that best fits your sanitary process line. Final clamp selection should always account for operating pressure, temperature, gasket material, line size, product characteristics, and applicable sanitary requirements.
| Clamp Type / Model | Style | Typical Service Rating* | Typical Applications | Choose This When... |
| 13MHHM | Double hinge clamp | 70°F / 250°F | General sanitary process lines, CIP circuits, and routine maintenance areas | You need easier opening/closing and frequent access around standard Tri-Clamp connections. |
| A13MHM | Single hinge clamp | 70°F / 250°F | General hygienic processing, food, dairy, beverage, pharma, and biotech lines | You want a standard hinged clamp for dependable sanitary connections. |
| 13MHHS | 3-segment clamp | 70°F / 250°F | Larger sizes, higher loads, or connections that benefit from more even compression | You need improved clamp distribution around the ferrule connection. |
| 13MHP / A13MHP | High-pressure clamp | 70°F / 250°F | Higher-pressure hygienic lines, demanding CIP/SIP, and process systems with elevated operating conditions | Standard-duty clamps do not provide the required pressure rating. |
| 13MHLA | Light-duty clamp | 70°F / 250°F | Low-pressure sanitary service, utility lines, and non-critical hygienic connections | You need a lighter clamp for lower-pressure applications. |
| A13MO | T-bolt clamp | 70°F / 250°F | Secure sanitary connections requiring higher clamping force or more controlled tightening | You want a bolted clamp design instead of a wing nut or hinged style. |
| A12MPS | Swivel clamp | 70°F / 250°F | Lines where alignment, positioning, or access is more difficult | You need added installation flexibility around the connection. |
| 13I / 13IS | I-Line / Q-Line clamp | 70°F / 250°F | I-Line and Q-Line sanitary connections in hygienic process systems | The connection is I-Line or Q-Line rather than a standard Tri-Clamp fitting. |
*Typical service ratings vary by clamp style, size, gasket, temperature, and operating conditions. Always verify the specific pressure rating in the model tables below before selecting a clamp.
Tri-ClampsA13MHM-Size-Material
| 304 Material Part # | Size OD (in) | A (in) |
|---|---|---|
| A13MHM-1.5-S | 1 or 1½ | 2.13 |
| A13MHM-2-S | 2 | 2.64 |
| A13MHM-2.5-S | 2½ | 3.19 |
| A13MHM-3-S | 3 | 3.72 |
| A13MHM-4-S | 4 | 4.83 |
| A13MHM-6-S | 6 | 6.69 |
| A13MHM-8-S | 8 | 8.66 |
Tri-Clamps13MHHM-Size-Material
| 304 Material Part # | Size OD (in) | A (in) |
|---|---|---|
| 13MHHM-0.75-S | ½ or ¾ | 1.13 |
| 13MHHM-1.5-S | 1 or 1½ | 2.13 |
| 13MHHM-2-S | 2 | 2.66 |
| 13MHHM-2.5-S | 2½ | 3.19 |
| 13MHHM-3-S | 3 | 3.72 |
| 13MHHM-4-S | 4 | 4.83 |
| 13MHHM-6-S | 6 | 6.69 |
| 13MHHM-8-S | 8 | 8.69 |
| 13MHHM-10-S | 10 | 10.71 |
| 13MHHM-12-S | 12 | 12.72 |
Fractional Tri-Clamps with Wing Nut13MHHS-Size-Material
| 304 Material Part # | Size OD (in) | A (in) |
|---|---|---|
| 13MHHS-0.75-S | ½ or ¾ | 1.13 |
3-Segment Heavy Duty Tri-Clamps with Wing Nut13MHHS-Size-Material
| 304 Material Part # | Size OD (in) | A (in) |
|---|---|---|
| 13MHHS-1.5-S | 1 or 1½ | 2.13 |
| 13MHHS-2-S | 2 | 2.66 |
| 13MHHS-2.5-S | 2½ | 3.19 |
| 13MHHS-3-S | 3 | 3.72 |
| 13MHHS-4-S | 4 | 4.83 |
Tri-ClampsA13MHM-Size-WNH
| 304 Material Part # | Size OD (in) | A (in) |
|---|---|---|
| 13MHHS-0.75-WNH | ½ or ¾ | 1.06 |
| A13MHM-1.5-WNH | 1 or 1½ | 2.13 |
| A13MHM-2-WNH | 2 | 2.64 |
| A13MHM-2.5-WNH | 2½ | 3.19 |
| A13MHM-3-WNH | 3 | 3.72 |
| A13MHM-4-WNH | 4 | 4.83 |
| A13MHM-6-WNH | 6 | 6.69 |
| A13MHM-8-WNH | 8 | 8.66 |
Tri-Clamps, High PressureA13MHP-Size-Material
| 304 Material Part # | Size OD (in) | A (in) | Bolt |
|---|---|---|---|
| A13MHP-0.75 (Block Style) | ½ or ¾ | 1.04 | 3/8-16 |
| A13MHP-0.75-S | ½ or ¾ | 1.04 | 1/4-20 |
| A13MHP-1.5 | 1 or 1½ | 2.05 | 3/8-16 |
| A13MHP-2 | 2 | 2.58 | 3/8-16 |
| A13MHP-2.5 | 2½ | 3.11 | 3/8-16 |
| A13MHP-3 | 3 | 3.64 | 3/8-16 |
| A13MHP-4 | 4 | 4.73 | 3/8-16 |
| A13MHP-6-S | 6 | 6.63 | 3/8-16 |
| A13MHP-8-S | 8 | 8.69 | 3/8-16 |
| A13MHP-10-S | 10 | 10.90 | 3/8-16 |
| A13MHP-12-S | 12 | 12.90 | 3/8-16 |
Tri-Clamps, High Pressure13MHP-Size-Material
| 304 Material Part # | Size OD (in) | A (in) |
|---|---|---|
| 13MHP-1.5-S | 1 or 1½ | 2.05 |
| 13MHP-2-S | 2 | 2.58 |
| 13MHP-2.5-S | 2½ | 3.11 |
| 13MHP-3-S | 3 | 3.64 |
| 13MHP-4-S | 4 | 4.73 |
| 13MHP-6-S | 6 | 6.63 |
Clamps made in the USA
Light Duty Adjustable Tri-Clamps13MHLA-Size-Material
| 304 Material Part # | Size OD (in) | A (in) |
|---|---|---|
| 13MHLA-1.5-S | 1 or 1½ | 2.14 |
| 13MHLA-2-S | 2 | 2.61 |
| 13MHLA-2.5-S | 2½ | 3.14 |
| 13MHLA-3-S | 3 | 3.67 |
| 13MHLA-4-S | 4 | 4.78 |
Light Duty Tri-Clamps with T-BoltA13MO-Size-Material
| 304 Material Part # | Size OD (in) | A (in) |
|---|---|---|
| A13MO-1.5-S | 1 or 1½ | 2.08 |
| A13MO-2-S | 2 | 2.61 |
| A13MO-2.5-S | 2½ | 3.14 |
| A13MO-3-S | 3 | 3.67 |
| A13MO-4-S | 4 | 4.78 |
| A13MO-6-S | 6 | 6.69 |
| A13MO-8-S | 8 | 8.69 |
| A13MO-10-S | 10 | 10.69 |
| A13MO-12-S | 12 | 12.69 |
Swivel Joint ClampsA12MPS-Size-Material
| 304 Material Part # | Size OD (in) | A (in) |
|---|---|---|
| A12MPS-1.5-S | 1 or 1½ | 1.98 |
| A12MPS-2-S | 2 | 2.52 |
| A12MPS-2.5-S | 2½ | 3.05 |
| A12MPS-3-S | 3 | 3.58 |
| A12MPS-4-S | 4 | 4.69 |
Hygienic Hose Clamp for Tygon Hose AdapterA14MHC-Size-Material
| 304 Material Part # | Size OD (in) |
|---|---|
| A14MHC-1.125-S | 1⅛ |
| A14MHC-1.25-S | 1¼ |
| A14MHC-1.375-S | 1⅜ |
| A14MHC-1.5-S | 1½ |
| A14MHC-1.75-S | 1¾ |
| A14MHC-1.875-S | 1⅞ |
| A14MHC-2.0-S | 2 |
| A14MHC-2.125-S | 2⅛ |
| A14MHC-2.25-S | 2¼ |
| A14MHC-2.375-S | 2⅜ |
| A14MHC-2.5-S | 2½ |
| A14MHC-2.625-S | 2⅝ |
| A14MHC-2.75-S | 2¾ |
| A14MHC-3.0-S | 3 |
| A14MHC-3.25-S | 3¼ |
| A14MHC-3.5-S | 3½ |
| A14MHC-3.75-S | 3¾ |
| A14MHC-4.0-S | 4 |
| A14MHC-4.25-S | 4¼ |
| A14MHC-4.5-S | 4½ |
| A14MHC-5.0-S | 5 |
HDI ClampHDI-13-UD-Size-Material
| 304 Material Part # | Size OD (in) | A (in) |
|---|---|---|
| HDI-13-UD-1.5-304-S | 1½ | 2.22 |
| HDI-13-UD-2-304-S | 2 | 2.97 |
| HDI-13-UD-2.5-304-S | 2½ | 3.59 |
| HDI-13-UD-3-304-S | 3 | 4.16 |
| HDI-13-UD-4-304-S | 4 | 5.13 |
IPS Sch. 5 Light Duty Tri-Clamp w/ T-BoltA13MV-Size-Material
| 304 Material Part # | Size OD (in) | A (in) |
|---|---|---|
| A13MV-3-S | 3 | 4.22 |
| A13MV-4-S | 4 | 5.22 |
| A13MV-8-S | 8 | 9.32 |
| A13MV-10-S | 10 | 11.44 |
| A13MV-12-S | 12 | 13.44 |
IPS Sch. 5 Heavy Duty Tri-Clamp w/ Wing Nut13MHHV-Size-Material
| 304 Material Part # | Size OD (in) | A (in) |
|---|---|---|
| 13MHHV-1.5-S | 1.5 | 2.65 |
| 13MHHV-2-S | 2 | 3.19 |
| 13MHHV-3-S | 3 | 4.26 |
| 13MHHV-4-S | 4 | 5.26 |
IPS Sch. 5 High Pressure Tri-Clamp13MHPV-Size-Material
| 304 Material Part # | Size OD (in) | A (in) |
|---|---|---|
| 13MHPV-3-S | 3 | 4.18 |
| 13MHPV-4-S | 4 | 5.18 |
Still don't see what you need? Give us a call for additional clamp styles or sizes.
Tri-Clamp Connections Service Ratings*
| Size Tube OD | ½ & ¾ inch (psi) | 1 & 1½ inch (psi) | 2 inch (psi) | 2½ inch (psi) | 3 inch (psi) | 4 inch (psi) | 6 inch (psi) |
|---|---|---|---|---|---|---|---|
| 13MHLA | (Screw tightened to maximum) | ||||||
| at 70°F at 250°F | - - | 150 125 | 150 125 | 150 125 | 150 125 | 100 75 | - - |
| 13MHHM | (Wing nut tightened to 25 inch-pounds of torque) | ||||||
| at 70°F at 250°F | - - | 500 300 | 450 300 | 400 200 | 350 195 | 300 150 | 150 75 |
| 13MHHS | (Wing nut tightened to 25 inch-pounds of torque) | ||||||
| at 70°F at 250°F | 2200 1200 | 600 300 | 550 275 | 450 225 | 350 175 | 300 150 | - - |
| 13MHP | (Bolts tightened to 20 foot-pounds of torque) | ||||||
| at 70°F at 250°F | - - | 1500 1200 | 1000 800 | 1000 800 | 1000 800 | 800 600 | 300 200 |
| A13MO | (1 – 3 inch nuts tightened to 20 inch-pounds, 4" to 30 in/lb) | ||||||
| at 70°F at 250°F | - - | 500 250 | 350 200 | 300 150 | 200 100 | 100 100 | 75 50 |
| A13MHM | (Wing nut tightened to 25 inch-pounds of torque) | ||||||
| at 70°F at 250°F | - - | 500 300 | 450 250 | 400 200 | 350 175 | 300 150 | 150 75 |
* Service ratings are based on hydrostatic tests using standard-molded Buna-N material gaskets, with proper installation of ferrules, assembly of joints and absence of shock pressure. Contact Tri-Clover for service of other type and material gaskets, and for ratings at higher temperatures.
All ratings shown are dependent upon related components within the systems and proper installation. For temperatures above 250°F, we recommend using only 13MHP clamps. This information is only valid if Tri-Clover clamps, ferrules, and gaskets are used.
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FAQs
- Are Tri-Clover and Tri-Clamp the same thing?
-
Tri-Clover® is Alfa Laval’s sanitary fittings brand, and Tri-Clamp® refers to the clamp connection used within that system—on this page, both terms describe the same Alfa Laval hygienic clamp connection family.
- What sizes of sanitary Tri-Clamp clamps are available?
-
Clamps on this page are available in 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 10, and 12-inch tube OD.
- Which clamp should I use for high-pressure or high-temperature service?
-
Select High Pressure Tri-Clamp models (13MHP/A13MHP); for temperatures above 250°F, use only 13MHP per the service ratings shown on this page.
- How do I choose between heavy-duty, three-segment, light-duty, and bolted clamps?
-
Use the model families listed on this page: heavy-duty Tri-Clover clamps (A13MHM single-pin, 13MHHM double-pin), 3-segment (13MHHS), light-duty adjustable (13MHLA), light-duty with T-bolt (A13MO), and high-pressure (13MHP/A13MHP); see the tables and pressure rating chart for size and performance details.
- What pressure are Tri-Clamp connections rated for?
-
Service ratings vary by clamp model, tube size, and temperature; the on-page chart lists values at 70°F and 250°F and applies with proper torque, compatible gaskets and ferrules, correct assembly, and no shock pressure.
- What torque should I use when tightening Tri-Clover clamps?
-
Per the chart: 13MHHM and A13MHM wing-nut clamps are tightened to 25 in-lb; 13MHHS wing-nut clamps to 25 in-lb; 13MHP high-pressure bolts to 20 ft-lb; A13MO light-duty uses 20 in-lb (1–3 inch) and 30 in-lb (4 inch); 13MHLA is screw tightened to maximum (no specific torque value listed).
- Are these sanitary clamp fittings compatible with standard Tri-Clover ferrules and gaskets?
-
Yes—rated performance is valid only when Tri-Clover clamps, ferrules, and gaskets are used together as noted on the service ratings chart.
- Do you offer sanitary clamps for IPS Schedule 5 pipe?
-
Yes—this page includes IPS Sch. 5 Tri-Clamp clamps in light duty (A13MV), heavy duty (13MHHV), and high pressure (13MHPV).
- What materials are available (304 vs 316 stainless steel)?
-
Model tables list 304 Material Part #s for most clamps; select items are also available in 316 (e.g., 13H Bevel Seat Hex Nut shows 316 Material Part #s).
- Are these Tri-Clover sanitary fittings suitable for food, dairy, beverage, and pharmaceutical use?
-
Yes—Alfa Laval clamps are designed for hygienic applications including food, dairy, and beverage processing, as well as pharmaceutical and biotech facilities; additional industries on this page include processed foods, brewery, high-acid foods, home & personal care, and chemical.