Reliable OEM Ball Valve 50*50*50 - Origin: China, Premium Quality

Product Description

Flange Ball Valve
QFBV Series

 

Introducing the WALTER QFBV model Flange Ball Valve, a masterpiece in fluid control engineering. Designed as a full bore, quarter-turn valve, it perfectly caters to on/off applications. Available in both manual and automated options, whether electric or pneumatic, this valve promises versatility. Crafted with a simple two-piece construction, it ensures effortless maintenance and boasts a long working life, making it highly favored for industrial applications and essential utility services. Its diverse range of seats and robust body materials enables this valve to excel in various industrial applications.

Application Range

• Pump Stations

• Water Supply Systems

• Water Treatment and Distribution Systems

• Tanks

• Power Station Cooling Lines
 

Testing

 

▪ Body Strength Test: Conducted in accordance with BS EN 12266-1 at 1.5 times the nominal pressure rating (PN).

▪ Seat Tightness Test: Ensuring a tight seal, tested as per BS EN 12266-1 at 1.1 times PN.

ISO 5208 Rate A certified for impeccable performance.

▪ Pressure Testing in compliance with BS EN ISO 5208 standards.

Technical Data

Size range	DN32-DN250
Pressure range	PN10-16-25
Temperature	EPDM -10ºC to +80ºC / NBR -10ºC to +60ºC
Design	DIN 3357
Face to face	DIN 3202 F4/F5
Flange drilling	EN 1092-2 / ISO 7005-2
Coating	Thermoplastic Powder Epoxy
Testing	EN 12266-1
Marking	EN 19
Coating Blue Color	RAL 5005
	RAL 5010
	RAL 5015
	Custom made

Features

• Built with a two-piece ductile iron body and a full bore design, ensuring uncompromised flow.

• Equipped with a floating seat, spherical seat, floating ball, and adaptive sealing. Its fireproof design makes it ideal for fire protection systems.

• Featuring a symmetrical valve seat design, the valve supports non-directional switching, installation, sealing, and pressure.

• Incorporates a wear-resistant bushing design on the valve stem, ensuring low torque and extended durability. The self-tightening upper seal prevents leakage under high pressure conditions.

• The upper flange conforms to the ISO5211 standard.

• The ball undergoes solution treatment or hard chrome plating for superior material stability and surface wear resistance, thereby enhancing sealing efficiency and extending product lifespan.

• A positioning lock design on the handle facilitates easy installation.

Material Specification

No.	Part Name	Material	Standard
1	Body	Ductile Iron	EN GJS 500-7
2	Bonnet	Ductile Iron	EN GJS 500-7
3.	Ball	Stainless Steel	SS 304
4	Stem	Stainless Steel	SS 304
5	Packing	Rubber	PTFE
6	Hand lever	Ductile Iron	EN GJS 500-7

Dimension PN10/16(mm)

INCH	DN	L	D	D1	b	n-φd
						PN10	PN16
1-1/4"	32	130	140	100	19	4-φ19
1.5"	40	140	150	110	19	4-φ19
2"	50	150	165	125	19	4-φ19
2.5"	65	170	185	145	19	4-φ19
3"	80	180	200	160	19	8-φ19
4"	100	190	220	180	19	8-φ19
5"	125	325	250	210	19	8-φ19
6"	150	350	285	240	19	8-φ23
8"	200	400	340	295	22	8-φ23	12-φ23
10"	250	450	405	355	24	12-φ23	12-φ27

 

 

ABOUT US

Suzhou Walter Flow Control Equipment Co., Ltd. proudly stands as a professional manufacturer specializing in water system valves. We offer OEM solutions for Sluice Valves, Gate Valves, Flange Butterfly Valves, Check Valves, Strainers, Pressure Reducing Valves, Fire Hydrants, and a variety of international standard valves. Certain products are available with FM/UL Certification. Walter prioritizes customer satisfaction by providing expert advice and fluid control solutions. We also welcome custom designs and special requirements.

We eagerly await your consultation!