Pipe Assembling "RJ" Joint

1. Spigot cleaning and greasing
2. Socket cleaning
3. Inserting the rubber gasket into the socket
4. Greasing the inner surface of the socket
5. Connecting the pipes and inserting the right stopper
6. inserting the left stopper. Fixation by the retaining wire
7. Assembled push-in joint

Informational letter

about “RJ” joint capabilities manufactured by

Lipetsk Pipe Company "Svobodny Sokol”

 

             «RJ» Joint – VRS (pic. 1) and “TYTON” (pic.2) abutting push-in joint with rubber sealing ring.

                    

Pic. 1. VRS gasket

Pic. 2. TYTON gasket

            «RJ» joint provides failure of spontaneous pipe disjunction while pipeline operation in difficult terrains, in places of danger of soil precipitation and under shock loads in earthquake-prone areas with seismic activity stability up to 9 points. The welding bead on the pipe end and two stoppers that are inserted into the pipe recess after the joining the pipes secured by a locking wire or rubber retainer, do not allow to break the connection.

            This is especially important while installing pipelines in unstable soils, in mountainous terrain and in the vertical position of pipes. Also, the “RJ” joint is used for laying pipelines by the method of horizontal directional drilling.

            The “RJS” joint - abutting push-in joint with rubber sealing ring “Tyton” type (pic.2). It is an "RJ" joint analogue. This joint is used when laying pipelines of large diameter DN 600-1000 mm, it provides a locking ring on the socket surface with the help of stoppers which are inserted into the pipe recess after the joining the pipes and additionally pulled together by a fixing flexible steel tape H-0.8 × 20 (GOST 3560).

            The “RJ” and “RJS” joints are not rigid and allow the connected pipes to deviate by an angle of 1.5 to 5 ° depending on the pipes diameter while maintaining complete tightness of the joint.

            Scope of application - cold water supply, heat supply system, sewerage.
            The design of the RJ joint (trademark Lipetsk Pipe Company “Svobodny Sokol”) corresponds to the design of the VRS - Tiroflex joint and was transferred to the Svobodny Sokol factory for production by
Tiroler Rohren und Metallwerke Aktiengesellschaft on March 24th, 1982, contract No. 7321 / 018202- 01 under license agreement No. 73-21-01-82-022-02.

            The design of the “RJS” joint (Pic. 4) was developed (patent of Lipetsk Pipe Company “Svobodny Sokol” ”No. 2472056 dd 01/10/2013) for push-in joint distribution of socket pipes, including large-diameter pipes. Abutting push-in joint has passed all the necessary tests and is certified by ICIM (Italy) and DVGW (Germany) and this joint outperforms the “BLS” (TRM), “Universal Ve” (PAM) joints with the help of smooth stoppers joining in the socket part of pipes.

 

 

Pic.3 “VRS-T” and “RJ” push-in joint

 

 

Table 1. Size comparison of “VRS-T” (TRM) and “RJ” (Lipetsk Pipe Company “Svobodny Sokol”) pipe joints

DN

TRM size, mm

Svobodny Sokol size, mm

d1

D

t

L

a

b

d1

D

t*

L

a

b

80

98

156

127

86

8

5

98

156

127

127

86

8

5

100

118

182

135

91

8

5

118

176

133

135

91

8

5

125

144

206

143

96

8

5

144

205

139

143

96

8

5

150

170

239

150

101

8

5

170

230

144

150

101

8

5

200

222

293

160

106

9

5,5

222

288

155

160

106

9

9

250

274

357

165

106

9

5,5

274

346

165

165

106

9

9

300

326

410

170

106

9

5,5

326

402

175

170

106

9

9

400

429

521

190

115

10

6

429

513

185

190

115

10

10

500

532

636

200

120

10

6

532

618

200

200

120

10

10

* - In column t, the upper digits - the length of the socket of the TYTON joint with the rubber sealing ring, the lower digits - the VRS joint with the rubber sealing ring.

Pic. 4 “RJS” push-in joint

 

Pic.5 “BLS” push-in joint

 

Table 2. Size comparison of “BLS” (TRM) and “RJS” (Lipetsk Pipe Company “Svobodny Sokol”) joints

DN

TRM size, mm

Svobodny Sokol size, mm

d1

D

t

L

a

b

d1

D

t*

L

a

b

600

635

732

175

116

9

6

635

729

200

120

11

7

700

738

849

197

134

9

6

738

848

235

150

11

7

800

842

960

209

143

9

6

842

960

245

160

11

7

900

945

1073

221

149

9

6

945

1060

260

175

11

7,5

1000

1048

1188

233

159

9

6

1048

1164

270

185

11

7,5

 



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