ZSFM industrial rain shower valve

NegotiableUpdate on 10/04

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Overview

Industrial rain shower valve 1. Explanation: Rain shower valve is a device used in rain shower systems and pre action systems to control water flow and provide alarm functions

Product Details

Industrial rain shower valve
1Instructions
Rain shower valve is a device used in rain shower systems and pre action systems to control water flow and provide alarm functions. The control system only opens the diaphragm when a fire occurs, allowing water to flow into the system pipeline for extinguishing the fire and sounding the hydraulic alarm bell. The water pressure inside the diaphragm chamber (control chamber) on the rain shower valve controls the opening or closing of the diaphragm. When the water pressure in the control room is equal to the supply pressure, the diaphragm closes and water cannot enter the system side; When the water pressure at that location is lower than the water supply pressure, the diaphragm is pushed open by the water supply pressure, and water flows into the system side for sprinkler fire extinguishing.
The pressure inside the diaphragm chamber (control chamber) is controlled by a detection system installed in the protected area, which is also the driving system of the rain shower valve diaphragm. This system is divided into electric control, pneumatic control, or hydraulic control. The rain alarm system is equipped with open nozzles on the system side pipe network and is supplied with water by rain valves.

IIworking principle

IIIProduct structure and main technical parameters
1. Diaphragm rain shower valve

Specification Typenumber	Nominal straightpath	Rated pressure力	installerformula	Connecting screwsbolt	D	K	n	d	H
ZSFM65	DN65	1.6MPa	Vertical and horizontal	4-M16	185	145	4	18	420
ZSFM80	DN80			8-M16	200	160	4	18	500
ZSFM100	DN100			8-M16	220	180	660	325	580
ZSFM150	DN150			8-M20	285	240	720	415	630
ZSFM200	DN200			12-M20	340	295	775	500	715
ZSFM250	DN250			12-M24	405	355	12	26	820
ZSFM300	DN300			12-M24	460	410	12	28	900
ZSFM350	DN350			16-M24	520	470	16	30	1050

Main technical parameters
Work pressure: 0.14-1.6MPa
公称通径： DN80、DN100、DN150、DN200、DN250、DN300、DN350
Installation method: horizontal, vertical
Hydraulic motorcycle rental: ≤ 0.07
Material: 304, 316 QT450-10
Connection method: flange type
Electromagnetic valve: DC24, AC220
4Two performance characteristics of rain shower valveAnd multiple startup methods
1. Open type nozzles are installed on the system side pipe network. Once the rain shower valve is opened, the nozzles in the entire protected area will spray water simultaneously, so it can extinguish fires that quickly spread and burn fiercely in places with flammable and explosive materials.
2. Using different control detection systems to open the rain shower valve constitutes a wet control system, a dry control system, or an electric control system. They all control the pressure inside the diaphragm chamber (control chamber) of the rain shower valve, thus being able to control the opening and closing of the rain shower valve.
Deluge valve can also be combined with foam system to form foam deluge system, which is used to put out liquid fire with explosive combustion risk.
Emergency manual ball valves are installed in the pipeline configuration as on-site quick opening switches.

Wet control system:
A system consisting of a rain shower valve and an open nozzle. There is usually no water in the side pipe network, and the rain shower valve seals the water in the water supply pipeline. The wet control system consists of pipelines and closed nozzles with 1/2 "guide holes, distributed throughout the entire protected area. It is only used as a detection and control system and not for firefighting purposes. This is the simplest way of control.
The diaphragm chamber (control chamber) inside the rain shower valve plays a role in controlling the opening of the diaphragm. When the pressure inside is balanced with the water supply pressure, the pressure inside the control room presses the diaphragm down to the closed position. When the closed detection nozzle or constant temperature release device installed on the wet control system operates to spray water, the pressure in the pipeline rapidly drops, and the pressure in the diaphragm chamber (control chamber) decreases due to the throttle at the water supply port not being able to replenish enough water to maintain the original pressure. As the pressure at this location is much lower than the water supply pressure under the diaphragm, it cannot press the diaphragm anymore. The rain shower valve opens, water flows into the system side, and is sprayed out from the open nozzle to extinguish the fire.

Dry control system：
This system consists of a dry system's rain shower valve and an open nozzle. Normally, there is no water in the system's side pipes, and the rain shower valve seals the water in the water supply pipeline. The dry control pipeline is composed of pipelines and closed detection nozzles or other constant temperature release devices, distributed throughout the entire protection zone. The driving component of dry control is a pneumatic valve, which is connected at one end to the control pipeline and at the other end to the diaphragm chamber (control chamber) of the rain shower valve.
The dry control pipeline is usually filled with pressure gas to close the pneumatic valve. When the flame causes the detection nozzle to open, the pressure in the pipeline rapidly decreases. The pneumatic valve opens to reduce the water pressure in the diaphragm chamber (control chamber) of the rain shower valve to below the water supply pressure. The diaphragm opens under the action of the water supply pressure, and water flows into the system pipeline and is sprayed out from the open nozzle to extinguish the fire.
When the pressure in the dry control pipeline drops to a certain value, the pressure switch sends an alarm signal.

Electric control rain shower system:
The electric control rain shower system consists of an electric control rain shower valve and an open nozzle. Normally, there is no water in the system side pipeline network, and the water is sealed in the water supply pipe by a rain shower valve.
Within this system, various electronic detectors are distributed within the protected area to form a detection network. The electrical control cabinet receives fire alarm signals from detectors, processes them, and sends various signals to the solenoid valve on the outlet pipeline of the rain shower valve diaphragm chamber (control chamber). When the solenoid valve is opened, water flows from the water supply pipe through the open nozzle on the system side, and the entire protected area is sprayed with water to extinguish the fire.
Non electric remote control
This opening method is unique to the pressurized rain shower valve. Pressure water is directly introduced into the control chamber through a pipeline from a distance. In the event of power loss or control system failure, it can be manually opened from a distance of up to 500 meters, greatly improving the safety and reliability of the system.
5、 Installation and User Guidelines
install

1. The rain alarm valve is generally installed vertically or horizontally, and the installation method requirements should be proposed to our company in advance when ordering. Regardless of the installation method, there should be sufficient maintenance space around the rain alarm valve.
2. The installation method of hydraulic alarm bell should be "small mouth in, large mouth out". The outlet pipe is a 1 "galvanized pipe, and the outlet of the alarm bell is the highest point of the alarm bell drainage pipe, which is separately connected to the non pressure drainage ditch. Only in this way can the water in the alarm bell be drained as much as possible and unobstructed.
3. The outlet of each control valve should be connected to an appropriate drainage pipe through a galvanized pipe of appropriate diameter.
4. Signal isolation valves should be installed at the inlet and outlet of the rain alarm valve. It is recommended to use the signal butterfly valve produced by our company. This is more convenient for repairing and maintaining the rain alarm valve.
5. The solenoid valve should be connected to the control cabinet through the control module. In the event of a fire, the electrical signal that drives the solenoid valve should be maintained at all times (to prevent the rain shower valve from resetting due to damage to the anti reset device) until the fire stops. The default signal is 24V DC, and customers can customize it.

User Notice

1. Please specify the product name, model, specifications, quantity, and delivery time on the order when placing an order.
2. The rain shower valve device is randomly equipped with 2 2.5MPa pressure gauges, 1 pressure switch, 1 hydraulic alarm bell, 1 solenoid valve, 1 user manual, and 1 certificate of conformity. The clamp type fire signal butterfly valve or clamp type butterfly valve and other supporting parts need to be ordered separately.
3. The rain shower valve device should be inspected and operated once a month, disassembled and inspected once a year, the pipeline should be flushed, scale and impurities should be removed, and the performance of all moving parts and seals should be checked. Whether there are scratches, burrs, or deformations on each axis; Is there any blockage in the throttle hole; Check for scale, rust and impurities on the valve seat; The normal service life of each rubber component is one and a half years. If there are any phenomena such as creep, indentation deformation, aging hardening, adhesion, wear, etc., they should be replaced immediately.
4. When installing the components of the rain shower valve device, it is necessary to lift and lower the force on the inlet and outlet flanges of the valve body, and it is strictly prohibited to move them in other positions or parts to avoid unnecessary damage.
5. The rain shower valve device is used in special environments (such as severe corrosion) and explosion-proof situations. Users need to explain the usage environment, and our company will provide special orders according to the actual situation.