City Stop (PN 16/100)
CITY STOP CS15, CS25…150
safety shut-off valve
+ large setting range
over pressure release: 0,013 ÷ 45 bar
under pressure release: 0,005 ÷ 20 bar
+ variable flange connections
+ manual release at trip unit
+ easy reengaging through internal bypass
Nominal width: up to DN150
Nominal pressure: up to 100 bar ANSI 150/300/600
Standard EN14382
- large input pressure range,
- built-on SSV for greater safety,
- actuator of fail to close design,
- optional monitor of fail to close
or fail to open design - pilot setting range 0,02 bar to 45 bar
- easy-maintenance structure with
seat easy to access - sound absorber integrated in the valve body
- complies with EN 334 / EN 14382, DVGW
certificate
The power of the closing spring affects through the closing bush onto the disc of the safety shutoff valve in closing direction.
The closing is blocked by the roller until the release device of the safety shut-off valve is latched. If a safety shut-off valve releases, the roller turns and the closing bush and the valve disc move in closing direction.
The closing of the safety shut-off valve happen without any outside effect. The releasing could be taken by pushing of the releasing button manually from outside.
For the repeated opening of the safety shut-off valve there is a lever ,that brings the valve disc through the closing bush into the latched position. Figure demonstrates the safety shut-off valve and the lever in opened position.
Mega Stop (MS DN 16/40/100)
- MEGA STOP MS
axial safety shut-off valve
over pressure release: 0,013 ÷ 20 bar
under pressure release: 0,005 ÷ 14 bar
Nominal width: up to DN150
Nominal pressure: up to 100 bar ANSI 300/600
Standard EN14382
The load of closing spring is applied, via sleeve, to valve disk of the safety shut-off valve in the closing direction. A cam lever prevents the valve from closing for as long as the SSV trip is
interlocked.
Once the SSV trips, cam lever rotates and releases the sleeve and valve disk.
The SSV closes without the application of any
external force. It may be tripped manually by an
external pushbutton.
The safety shut-off valve is re-opened by applying
lever to the rectangular tube. Operating the lever
moves the valve disk via sleeve into the
original interlocking position. The start of the
movement initiates the internal pressure compensation.
CITYFLOW CF mainly comprises the functional
units: actuator case, actuator, safety shut off valve.
The actuator can easily be removed from the case.
Water safety shut off valve (SV 422)
• Safety shut-off valve for warm water. Used to protect warm
water systems against unacceptable pressure
(gas leakage into the water side of a heat exchanger).
• Applicable for mixing of Glycol into the water system to
avoid freezing problem.
• Compact design enables short and simple situation in the
water circuit at the heat exchanger.
• Simple and uncomplicated functional test.
• Diameter up to DN200.
• Pressure levels up to Class 1500.
• Pout = 2.0 ÷ 45 bar.
• Operating temperature up to 120°C
• Standard EN14382. DIN-DVGW certificate.
Explosion protection The SV422 device has no potential sources of ignition of its own when
used as intended. Consequently, the WW-SSV does not fall within the
scope of the ATEX Directive 2014/34/EU. The prerequisite is a connection
to the system’s overall equipotential bonding.
If required, installed electrical equipment may have its own approval.
Modifications by third parties may require approval in accordance with
ATEX, thus rendering the respective manufacturer’s declaration invalid.