Conditions For Installation - Stafsjö D2G Instrucciones De Instalación Y Servicio

Specifically note that threaded hole on top of pneumatic cylinder type, is only for
handling the cylinder itself. See figure 2.
B) Installation/functional check
This instruction includes safety recommendations for foreseeable risks at installation into a (pipe)
system. The user is responsible to complete this instruction with warning notes for system-specific
aspects. All requirements of the system shall be observed.
B1 Safety warnings at installation
• Installation shall be performed by qualified personal. Qualified are those persons who, due to
experience, can judge the risks and execute the work correctly and who are able to detect and
eliminate possible risks.
After installation, the function of the valve shall be in accordance with the valve and the actuator (if
•
any) destinations, see section A2.
• At the end of the installation the gland bolting shall be tightened according to table in section B7.
• A valve without an actuator must not be installed into the (pipe) system.
• Some valve types can be installed as end valves. Contact Stafsjö for specific requirements and
information.
1. A valve with an actuator shall only be operated if:
• The valve is installed between flanges or between a flange and a protective device.
• The gate guards are installed on the beams on automatic operated valves.
2. If the knife gate valve is installed as an end valve in a pipeline, always install protective equipment
to prevent people getting to close to the valve and being exposed to the media transported in the
system when the valve opens.
Danger
3. Do not climb or stand on the valve and/ or actuator
People's life and health is at stake if this is not observed. Any other action is the responsibility of the
user.
B2

Conditions for installation

Make sure:
• To install valves according "Valve destination", see section A2. Observe valve marking, see section A4.
• That the pipe section is not exposed to vibrations or other mechanical stresses which could deform the valve body
and affect the valve's tightness and/or ability to operate.
• That the valve environment does not imply any risk to the valve, the actuator or the accessories. This also implies
to explosive environment – except for valves classified for ATEX- area
• That flanges, pipeline and the valve are empty, free from solid and sharp particles.
• That the valve is installed between flange(s) (fixed or loose) to ensure that the valve is securely fixed and that the
flange keeps tight.
• That the knife gate valve is protected against radiant heat, if the valve is placed near a heat source whose
temperature exceed maximum allowable temperature for the valve or its actuator.
• The mating (=gasket contact) surface of the flange cover the retainer ring completely. Detailed information on
flange drilling, threads, length and number of bolts is available in data sheet on www.stafsjo.com.
• To follow those instructions which are supplied with an actuator (if any).
• The pipeline is free from pressure.
• Additional requirements may be found in the actuator instruction – specifically to adjust the correct OPEN and
CLOSED positions before the valve is installed.
and marked accordingly.
Document: is-VALVE, 21-02-11 issue: 15
OK
Fig.2