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Weld On Swivels 3x20W Series

The 3x20W is a straight weld-on single-plane swivel (Style 20) that replaces the SJW weld on swivels.

The 3x20W series can be supplied in a variety of sizes, typically in the range of 2" - 6" size.

They are available in mild steel or stainless steel 316 and can be supplied with range of seal materials on request. 

The 3x20W swivels are beveled on both ends for welding and can be used in a wide range of loading arms and similar applications where 360° rotational joints are required.

Suitable for :

 

Features & Benefits
  • Single-plane swivel direction (Style 20) allows for 360° rotation.
  • O-Rings provide a tight seal without hindering swivel action.
  • Accurately machined and micro-finished grooves provide for minimal seal wear.
  • Body and tail sections are locked together by a double row of ball bearings.
  • Raceways are machined to precise tolerances.
  • Double raceway design assures proper alignment and prevents binding caused by temperature changes and heavy radial loads.
  • Protective inner O-ring seal prevents product from entering bearing chamber.
  • Outer seal keeps rain, dirt, and other contaminants out.
  • Ball bearings are hardened, precision-ground steel.
  • A grease fitting between races that accepts a standard grease gun is available for swivels that require field lubrication.
  • Non-lubricating swivels are available on special order.
  • Balls are held in place by factory-installed plugs that never need to be adjusted to maintain bearing performance.
  • Beveled for welding both ends.
Technical Information

Pressure / Temperautre Guide

Note: Swivels above 8" in size carry a 500 PSI rating.

Material

¾"

20mm

1"

25mm

1¼"

32mm

1½"

40mm

2"

50mm

3"

80mm

4"

100mm

6"

150mm

8"

200mm

10"

250mm

Pressure Rating

8" & 10" 500 psi max
Steel, Cast, High-Pressure
3200 Series		 ■ ■ ■ ■             300 psi 8" & 10" 500 PSI MAX
Steel, Fabricated
3400 Series		         ■ ■ ■ ■ ■ ■ 1000psi  
316 Stainless Steel
3700 & 3900 Series		 ■ ■   ■   ■ ■ ■ ■ ■ 1000psi  
Aluminum
3600 Series		   ■   ■ ■ ■ ■ ■     125psi  
Ductile Iron
3800 Series		   ■   ■ ■ ■ ■       600psi  
Bronze
3300 Series		   ■   ■ ■ ■         300pwi  

*Maximum pressure rating of OPW swivel joints is as shown, or is determined by the flange/end connection rating, whichever is lower.
Buna-N seals are standard in all of the above swivel joints, but each is available with seals made of Fluorocarbon GFLT, FEP PTFE/Silicone/EPDM, or Kalrez® 6375, depending on the pressures and temperatures of your operation.

Materials

  Aluminum
3600		 Bronze
3300		 Cast HP
3700
CST
3400

 Ductile Iron
3800		 SST
3900
Body and Tail ASTM B26
A356 T		 ASTM B62-83600 ASTM A351-CF3M/
CF8M		 ASTM A350LF2 ASTM A-536 ASTM A351-
CF3M/CF8M
Seals See Chart See Chart See Chart See Chart See Chart See Chart
Balls Grade 200 CST Grade 200 CST Grade 200 CST Grade 200 CST Grade 200 CST Grade 400 CST
Flanges (150/300 lb) 6061-T6 N/A N/A ASTM A105 N/A B16 A182 316/316L
Elbows 6061-T6 N/A N/A ASTM A234 WPB N/A ASTM A351-CF3M
Piping 6061-T6 N/A N/A ASTM A53
Grade B		 N/A ASTM A312
TP 316L


Seals*

  Min Temp °C MaxTemp °C Min Temp °F
Max Temp °F
Buna-N -29 100 -20 212
Fluorocarbon (V1163-75) -29 204 -20 400
(PFA) PTFE/Silicone (standard) (FDA Approved) -46 260 -50 500
EPDM -46 121 -50 250
(PFA) PTFE/Fluorocarbon (special order) (FDA Approved) -18 204 0 400
Kalrez® -18 260 0 500

*Other seals available on request

Lubrication

Lubrication plays an important role in the life expectancy of a swivel joint. OPW has done extensive research to determine the best lubricants for our products. Our standard is a High Performance Synthetic Lubricant (OPW part # 880-0089).

  • Specially formulated to reduce friction & wear.
  • Requires only annual lubrication
  • Will not drip, melt or carbonize
  • Complies with FDA regulation 21CFR178.3570
  • Temperature Range -40F – 750F (-40C – 399C)
  • Not for use with EPT/EPDM Seals. EPT/EPDM seals require the use of OPW 885-0083 lubricant.

Welding (Where applicable)

  • All swivel joints are welded to conform to the requirements of the latest publication of the American Society of Mechanical Engineers (ASME) and Section IX of the Boiler and Pressure Vessel Code (BPV). Welding processes for fluid conduits shall be metal-arc inert gas (GMAW) and/or Tungsten Inert Gas (GTAW) and have 100% penetration.
  • Materials: Weld rod materials and welding equipment are qualified and/or certified to the ASME code.
  • Certification: All welds are performed by welders certified per the ASME Boiler and Pressure Vessel Code Section IX.

Surface Treatments

  • Treatments: Carbon Steel, Carburized to Rc 45-60 Anodizing for Aluminum.
  • Painting: All Steel and Ductile Iron Swivel Joints are Painted with a Rust-Inhibiting Day Primer Finish Paint (Watson Coatings, Inc. Water
                 Reducible Enamel Coating, Aqua-Shile High Gloss Blue (WAC - 2569) at -6 to 1 mls Dry Film Thickness
Ordering Information

LIQ3420W-0202: 2" Weldable Swivel, Steel, Viton seals.

LIQ3920W-0202: 2" Weldable Swivel, Stainless Steel 316, Viton seals.

LIQ3920W-0203: 2" Weldable Swivel, Stainless Steel 316, PTFE seals.

LIQ3420W-0302: 3" Weldable Swivel, Steel, Viton seals.

LIQ3920W-0303: 3" Weldable Swivel, Stainless Steel 316, PTFE seals.

LIQ3420W-0402: 4" Weldable Swivel, Steel, Viton seals.

LIQ3920W-0402: 4" Weldable Swivel, Stainless Steel 316, Viton seals.

LIQ3920W-0403: 4" Weldable Swivel, Stainless Steel 316, PTFE seals.

LIQ3920W-0602: 6" Weldable Swivel, Stainless Steel 316, Viton seals.

For a full range of 3000 series swivels that are available please refer to the below

 

 

 

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