RX Rotary Unions
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For water, air, steam, and thermal oil service Advanced rotary unions for fluid and air service. Engineered reliability for demanding applications.

Dual flow rotary union Single flow rotary union Quick Select Chart Media Model Water Recommended Acceptable Not Recommended # 2 Do not operate unions at maximum values of pressure, temperature, and speed. See page 27 for maximum speed pe

Overview Brass head Plated body Precision ball bearings Metal gasket Stainless steel springs Stainless steel rotor O-ring secondary seal O-ring secondary seal Silicon carbide or carbon graphite seal ring Tungsten carbide counterseat The RX rotary union connects stationary piping to a rotating device. The fluid is sealed by precision, micro-lapped seals that provide a uniform, full-flow design. The union is supported by two widely-spaced anti-friction bearings and is available with a bearing isolation system for added bearing protection. The RX union is capable of intermittent dry running...

to 11⁄ 2" Single and dual flow Standard RX* Ratings Media: *Consult Kadant Johnson for RX-2 and RX-3 unions for applications up to 230°C and for abrasive fluids. Dual flow straight thread rotor Single flow straight thread rotor Media: Water, air, and steam** K M* Model ISO-228-1 ISO-228-1 Rotor RH G 3⁄ 8"-RH Part ID – Water/Steam/Air** Single Flow Dual Flow Fixed Pipe Dual Flow Rotary Pipe G Fixed Rotary Pipe Pipe S Fixed Rotary Pipe Pipe ISO-228-1 OD f7 Approx. Weight * For additional connection sizes/reducers, consult Kadant Johnson. ** Steam is not recomm

RX Smooth flow elbow Precision ball bearings Plated steel body Stainless steel springs Metal gasket Brass head Stainless steel rotor O-ring secondary seal Silicon carbide or carbon graphite seal ring O-ring secondary seal Tungsten carbide counterseat Dual flow with Q-flange rotor Single flow with Q-flange rotor Media: Oil K M* Model ISO-228-1 ISO-228-1 Rotor RH G 3⁄ 8"-RH Part ID – Oil Single Flow Dual Flow Fixed Pipe H Dual Flow Rotary Pipe G Fixed Rotary Pipe Pipe S Fixed Rotary Pipe Pipe ISO-228-1 OD f7 Approx. Weight * For additional connection sizes/reducers, consult Kadant Johnson.

to 11⁄ 2" Single and dual flow Standard RX-1* Ratings Media: *Consult Kadant Johnson for RX-2 and RX-3 unions for applications up to 230°C and for abrasive fluids. Consult Kadant Johnson for the correct greasing intervals. Single flow straight thread rotor Dual flow straight thread rotor Media: Water, air, and steam** K M* Model ISO-228-1 ISO-228-1 Rotor RH G 3⁄ 8"-RH Part ID – Water/Steam/Air Single Flow Dual Flow Fixed Pipe Dual Flow Rotary Pipe G Fixed Rotary Pipe Pipe S Fixed Rotary Pipe Pipe ISO-228-1 OD f7 Approx. Weight * For additional connection sizes/reducers, consult Kadant...

RX-1 Plated steel body Brass head Precision ball bearings Metal gasket Stainless steel springs Smooth flow elbow Stainless steel rotor O-ring secondary seal Silicon carbide or carbon graphite seal ring O-ring secondary seal Tungsten carbide counterseat Dual flow with Q-flange rotor Single flow with Q-flange rotor Media: Oil K M* Model ISO-228-1 ISO-228-1 Rotor RH G 3⁄ 8"-RH Single Flow Dual Flow Fixed Pipe H Dual Flow Rotary Pipe G Fixed Rotary Pipe Pipe S Fixed Rotary Pipe Pipe ISO-228-1 OD f7 Approx. Weight * For additional connection sizes/reducers, consult Kadant Johnson.

Seal Replacement Easy seal replacement The RX line has a unique feature. The complete line from 3⁄8” to 6” is featured with a Quick Replacement Design (QRD). This feature will allow you to repair the RX union while the union is still installed on the machine. The Kadant RX union is the only one offering this feature in a ball bearing line. The RX union is designed for long operating life and short maintenance time to guarantee the best operating times for your production line. How does it work? Step 1. Loosen and remove socket head cap screws (2A) and set aside. Remove head (2). Step 2....

Overview 2" to 3" RX Stainless steel assembly plate Tapped vent holes Precision ball bearings Stainless steel springs Cast iron body Metal gasket Cast iron head Smooth flow elbow Stainless steel rotor Spacer O-ring secondary seal Silicon carbide or carbon graphite seal ring Tungsten carbide counterseat O-ring secondary seal The RX rotary union connects stationary piping to a rotating device. The fluid is sealed by precision, micro-lapped seals that provide a uniform, full-flow design. The union is supported by two widely-spaced anti-friction bearings and is available with a bearing...

2" to 3" Single flow Standard RX* Ratings Media: *Consult Kadant Johnson for abrasive fluids. J 14 Approx. Weight Straight thread rotor 2" and 21⁄2" flanged rotor Model * For oil rotary joints and additional connection sizes/reducers, consult Kadant Johnson. ** Thread is according to ISO-228-1. 10 Approx. Weight

RX Dual flow Standard RX* Ratings Media: *Consult Kadant Johnson for abrasive fluids. J Dual Flow Fixed Pipe Dual Flow Rotary Pipe Fixed Rotary Pipe Pipe Approx. Weight S Fixed Rotary Pipe Pipe ISO-228-1 OD f7 G1"-RH 32,2 Straight thread rotor 2" and 2 ⁄2" flanged rotor K Model Rotor Flange 4200 4250 4300 Dual Flow Fixed Pipe Dual Flow Rotary Pipe Fixed Rotary Pipe Pipe * For oil rotary joints and additional connection sizes/reducers, consult Kadant Johnson. ** Thread is according to ISO-228-1. S Fixed Rotary Pipe Pipe ISO-228-1 OD f7 G1"-RH 33,2 Approx. Weight Dimensions are in mm, are for...

2" to 3" Single flow Standard RX-1* Ratings Media: *Consult Kadant Johnson for abrasive fluids and RX-2 unions for applications up to 205°C. J 14 Straight thread rotor K ISO-228-1 Rotor Approx. Weight 2" and 21⁄2" flanged rotor Model * For oil rotary joints and additional connection sizes/reducers, consult Kadant Johnson. ** Thread is according to ISO-228-1. 12 Approx. Weight