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DG1 with Butt Weld Ends

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Description

 

 

Approvals

     

  • TA-Luft-stem sealing based on the new VDI 2240 directive. Temperature range: tested up to 270 °C (temperature of the medium).
  • Firesafe approval
    accoring to BS 6755, part 2
  • Meets the requirements of the pressure equipment directive PED 97/23/EC
  • Material certificate EN 10204
  • Production monitored by TÜV WO/TRD 100
  • GOST-R Certificate for the Russian Federation

Product features

On the numbered markings you receive further information.

1. Safe connection

Safe connection of all actuators to valve due to direct mounting, Interface acc. DIN 3337 No interruption of stem to acctuator

2. Reliable stem sealing

due to V-rings made of PTFE and equipped with spring washer

3. High switching frequency

due to special primary seal desgin

4. Exact mounting

by means of body screws the centre section is strongly connected with the flanges and is always in correct alignment to the flanges

5. Stem in anti-blowout design

the ball surface is super-polished and absolute round

6. Safe sealing to the outside

due to the separate and fully encapsulated body seal

7. High degree of tightness in bore

due to the special form of the seats. The prestress of the seats causes a spring effect, which results in a reliable sealing function in all pressure ranges. Materials: PTFE/Glass, PTFE/Carbon, PEEK, UHMWPE, POM

8. End connectors:

  • Butt weld end, short
  • Butt weld end, long
  • Orbital butt weld ends
  • Screwed end / female thread / NPT
  • Full bore / reduced bore

Torque chart

kvs
Breakaway torque Nm**
DIN 3337
Key
DN NPS reduced
bore
full
bore
reduced
bore
full
bore
Flange Stem Ø S Ø Stem M1 sw
8
¼"
-
5
-
5,5
F03/04
9/11
8
5,5
10
3/8"
-
9
-
5,5
F03/04
9/11
8
5,5
15
½"
9
16
5,5
9
F04/05
11/14
9
7
20
¾"
16
27
9
12
F04/05
11/14
9
7
25
1"
27
45
12
14
F04/05
11/14
9
7
32
1¼"
45
76
14
18
F04/05
11/14
11
8
40
1½"
76
110
18
20
F04/05
11/14
11
8
50
2"
110
208
20
35
F05/07
14/17
14
10
65
208
360
35
75
F07/10
17
   
80
3"
360
550
75
90
F07/10
17
   
100
4"
550
900
90
135
F07/10
17
   
150*
6"
900
-
135
-
F07/10
17
   


Breakaway torques refer to ball valves in depressurized condition. They may vary acc. to medium, temperature, pressure and frequency of operation.

** based on water at ambient temperature; seats made of PTFE/Glass


Product advantages

Safe connection
of all actuators to the valve due to direct mounting interface in compliance with DIN 3337. No interruption of stem to actuator

Reliable stem sealing
V-rings made of PTFE and equpped with spring washer

High switching frequency
due to special primary seal design

Precise assembly
Safety in mounting - by means of body screws the center section is strongly connected with the flanges and is always in correct alignment to the flanges

Anti-blowout stem
inserted from the inside, surface of ball super-polished and precisely formed.

Safe sealing
to the outside by fully encapsulated body seal
High degree of tightness
in the bore due to the special form of the seats. The prestress of the seats results in a reliable sealing function in all pressure ranges    

Application range

 

Applications & Industries

  • Chemical industry
  • Petrochemical industry
  • Process plants
  • Food industry
  • Beverage industry

Technical data

Nominal sizes:
DN 8 – DN 100 : Full bore
DN 15 – DN 150 : Reduced bore
Temperature:
-50°C to +270°C
(Please consider the appropriate pressure/temperature range diagram)

Tests:
DIN 3230, T3, BA / BO-1

Materials

Body:
Material: Code:
Stainless steel 1.4408  
   
Ball:
Material: Code:
Stainless steel 1.4408  
   
Stem
Material: Code:
1.4401  
 
Ends:
Material: Code:
Stainless steel 1.4409  
Steel GS - C25  
   
Seat and body rings:
Material: Code:
PEEK  
POM  
PTFE / glass  
PTFE / carbon  
Virgin PTFE  
UHMWPE  
   
 
 
   
  • Other materials available!

 

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