OPERATION AND MAINTENANCE MANUAL
12-2015
3
1 TECHNICAL DESCRIPTION
1.1 PRODUCT DESIGNATION AND IDENTIFICATION
The subject of this Operation and Maintenance Manual is:
TYPE 2109 and 2909 metal seated gland packed wedge gate valve
- bore with recess underneath the wedge
- wedge (closure) with metal sealing rings made
of non-ferrous material or stainless steel
- non-rising spindle
- stem sealed with braided gland packing
1.2 USE
The TYPE 2109 and 2909 metal seated braced stem wedge gate valves are intended for industrial
systems, heating systems, air systems for petroleum products and other chemically inert liquids. The valves
are intended for overground and underground installations and must be installed horizontal pipelines in
industrial systems.
1.3 TECHNICAL SPECIFICATION
The metal seated gland packed wedge gate valves with hard seals are intended for transporting of the
specified media and other liquids as agreed with the manufacturer.
- Temperature: -10
°
C to +150
°
C
- up to 120
°
C with bronze rings
- up to 150ºC with steel rings
- Nominal diameter (dimension) range: DN40 to DN600 [mm]
- Maximum medium flow rate:
- liquid: max. 4 [m/s]
- gas: max. 30 [m/s]
- The driving torque at opening start and closing end is as listed below:
DN [mm]
40
50 65
80
100
125
150
200
250
300
350
400
500
600
Mmax [Nm]
55
80
100
200
300
400
- Valve control mode: the standard version of gate has the clockwise closing sense of rotation. The
closing sense of rotation can be opposite on special order.
-
The valve connection flange design is acc. to PN-EN 1092-2: 1999
with the sizes compliant with the nominal pressure values.
- the connection flanges are manufactured to PN-EN ISO 2285210:2011
- Valve drive coupling type: B3
-
- Installation length: PN-EN 558-1: 2012
Series 14.
-
-
Nominal pressure PN values:
- 1.0 MPa
- 1.6 MPa
2 DESIGN
2.1 DESCRIPTION OF THE VALVE DESIGN
The TYPE 2109 and 2909 metal seated gland packed wedge gate valves manufactured by F.A. JAFAR S.A.
feature a bore with a recess underneath the wedge, a non-rising stem, and an O-ring stem seal installed in the
valve cover. The stem seal is made as a sealing assembly with five (5) braided gland packings. The gate valve
closure is a metallic seals (with rings pressed into the wedge and the valve body seat) with the replaceable spindle
