Four Way Air Distributor Air Manifolds with Safety Valve Wet Hydrant

• Customization: Available
• Certification: GS, CE, FM/UL
• Warranty: 3 Years
• Model NO.: MT301X
• Open Fire Sprinkler System Type: Water Spray System
• Closed Fire Sprinkler System: Wet Fire Sprinkler System
• Wet Alarm Valve Structure: Check Valve
• Alarm Valve Diameter: 50mm
• Nozzle Flow Coefficient: 115
• Deluge Valve Type: Thermal Type
• Transport Package: Wooden Box
• Specification: 2''-12''
• Trademark: Maitolead
• Origin: Hebei, China
• HS Code: 8481804090
• Production Capacity: 1000000piece/Year
• Package Size: 123.00cm * 123.00cm * 62.00cm
• Package Gross Weight: 100.000kg

Product Description

Design expressly for wet pipe fire sprinkler systems
Working  pressure	300PSI
Flange and Grooved end can be choosen
Flange Standard	ASME/ANSI B16.1 CLASS 125
	ASME/ANSI B16.42 CLASS 150
	BS EN 1092-2PN16
	GB/T9113.1
Groove Standard	AWWA C606
	ISO 6182-12
working  temperature	4-70°C/39.2-158°F
Coating	Epoxy coated or coating upon request
certificate	FM and UL

WET ALARM CHECK VALVE

The wet alarm check valve consists of a wet alarm valve body, retard chamber, pressure gauges, water motor alarm, pressure switch, drain valve, and filter.

Alarm check valves function as water flow alarm initiating devices in wet pipe sprinkler systems. When water flows through the sprinkler system due to the activation of one or more automatic fire sprinklers, the alarm valve opens to allow continuous water flow into the system. This action simultaneously activates the water motor alarm and pressure switches, providing an immediate fire alarm signal.

The design of the alarm check valve allows installation under both variable and constant water supply pressure conditions. The valve trim incorporates a bypass line between the water supply and the wet pipe system. In the event of pressure surges in the water supply, a small amount of water is permitted to bypass the clapper, effectively limiting pressure fluctuations and reducing the risk of false alarms.

ABOUT US

Integrated Trading & Manufacturing · Multi-Factory Resources · Expert in Valve Export Solutions

We are a professional trading company dedicated to the export of valve products. While we do not manufacture valves ourselves, we maintain deep partnerships with several leading valve manufacturers in China and hold exclusive export authorization for five of these factories. Leveraging our strong supply chain integration capabilities, we provide both FM/UL certified premium products and cost-effective mid-range solutions, covering various engineering demands across different markets.

Our main product range includes:

Check Valves
Butterfly Valves
Strainers
Control Valves
Air Release Valves
BS5163 Resilient Seated Gate Valves
DIN Standard Resilient Seated Gate Valves
All our partner factories are equipped with advanced automated production lines, complete testing facilities, and professional R&D teams. With extensive design experience and strict quality control systems, we ensure every shipment meets the required project standards.

PRODUCT INFORMATION

Size	2''-12'' (DN 50-DN 300)
Grooved OS&Y Gate Valve Main Parts and Material	Body	Ductile iron as A536, 65-45-12
	Bonnet	Ductile iron as A536, 65-45-12
	Resilient wedge disc	Ductile iron as A536, 65-45-12 + EPDM
	Stem	SS304/SS304/SS420/SS431
	Yoke	Ductile iron as A536, 65-45-12
	Handwheel	Ductile iron as A536, 65-45-12
Flanged OS&Y Gate Valve Main Parts and Material	Body	Ductile iron as EN-GJS 450-10
	Bonnet	Ductile iron as EN-GJS 450-10
	Resilient wedge disc	Ductile iron as EN-GJS 450-10+EPDM
	Stem	SS304/SS304/SS420/SS431
	Yoke	Ductile iron as EN-GJS 450-10
	Handwheel	Ductile iron as EN-GJS 450-10
Butterfly Valve Main Parts and Material	Body	Ductile iron as A536, 65-45-12
	Shaft	SS431
	Disc	Ductile iron+EPDM/NBR
	Signal gearbox	Housing/cover: Ductile iron
	Worm	Carbon steel Or  Ductile iron
	Handwheel	Ductile iron as A536, 65-45-12
Certificate	Fire valve	FM/UL
	water valve	Wras
Standard	fire valve	UL 262/AWWAC 515,EN11 71,UL 1091/MSS SP-67
	water valve	GB/BS5163,DIN3352 F4 DIN F5,JIS,KS 10K,AWWA C515,ANSI
Connection	Grooved as AWWA C606, Flange as ASME B16.1,Flange as BS EN1092-2
Flange Standard	CLASS 150,PN10/16/25. Table D/E/F. 10K/16K/20K
Temperature	0℃-100℃
W.Pressure	350psi

Factory production

PRODUCTION LINE

OUR CERTIFICATE

Specification

PACKING&SHIPING

FAQ

1.Can I have a sample order for valve?
A: Definitely Yes.We welcome sample order to test and check quality. Mixed samples are acceptable. 

2. Can you OEM or ODM?
A:Yes, we have a great research & development team. The products can be made according to your request.

3. Can you provide the relevant documentation and certificate?
A:Yes, we can provide you with the documentation and certificate you need ,IS09001:2000 international quality system
certification,(CE)certification of the European Community, Det Norske Veritas (DNV) factory certification, Lloyd's Register
(LR)factory certification, China Classification Society (CCS) quality system certification and the FM and UL certification of the US,Bureau Veritas(BV) ,American Bureau of Shipping(ABS) etc.Of course we can also provide you the test Report; Certificate of Material Analysis; Certificate of Origin; and other export documents which required. 

4.Can you do the design for us?
A:yes.Please send us high resolutionimages,your logo and other materials needed . We will send you finished files for
confirmation.

5.What is your terms of delivery?
A: We accepte EXW,FOB,CIF,etc. You can choose the one which is the most convenient for you.

6.What's the package and how do you ship the goods?
A: Usually is wood pallet as your requst. We usually ship by sea.Airline shipping is also optional.

7. How to deal with after sales ?
A: warranty time : 12 months from the shipment ; and we will be responsible for all the quality problems. Quality control : High quality mold./Raw materials control/Production process quality control/Final inspection/Water testing (no leaking).

8. What is the average lead time?
A:For samples, the delivery time is about 2-5 days. For mass production, the lead time is about 15-60 days after receiving the deposit payment. we can provide production schedule and related photos every two weeks. The lead times become effective when (1)we have received your deposit, and (2) we have your final approval for your products.If our lead times do not work with your deadline, please go over your requirements with your sale. In all cases we will try to accommodate our production plan to your needs.