German standard F4-Copper gland soft seal gate valve

INTRODUCTION TO GERMAN STANDARD F4 SOFT SEAL GATE VALVE

The German standard F4 concealed rod soft sealed elastic gate valve is suitable for liquid and gas medium pipelines and equipment, serving as a cut-off and regulating medium.

Elastic soft seal gate valve utilizes the movement direction of the elastic gate to be perpendicular to the direction of the fluid, so the soft seal gate can only be fully open and fully closed, and cannot be used for adjustment or throttling. The soft sealed gate valve utilizes the deformation compensation effect generated by the overall encapsulation of the gate to achieve a good sealing effect, overcoming the phenomena of poor sealing, water leakage, and rust in general gate plates. This gate valve has the characteristics of fast installation, easy maintenance, long service life, and less prone to water hammer.

The bottom of the elastic soft seal gate valve adopts the same flat bottom design as the water pipe, which is not easy to cause debris accumulation and allows the fluid to flow unobstructed.
The handwheel is closed clockwise and open counterclockwise, and no leverage is allowed.

PERFORMANCE CHARACTERISTICS OF GERMAN STANDARD F4 SOFT SEAL GATE VALVE

1. Not easy to break, traditional cast iron soft seal gate valves used to be prone to breakage due to external objects hitting, colliding, or overlapping. Due to the use of ductile iron for soft sealed gate valves, this situation can be significantly reduced.

2. Corrosion resistant, soft sealed gate valve body is coated with powder epoxy resin to prevent corrosion and rust of the valve body, and can be used in sewage systems.

3. The overall rubber coating and soft sealing gate valve plate are made of high-quality rubber for internal and external sealing. The first-class rubber vulcanization technology in China ensures accurate geometric dimensions of the vulcanized valve plate, and the rubber is firmly connected to the ductile iron gate plate, which is not easy to fall off and has good elastic memory.

4. Flat bottomed valve seat, traditional gate valves often accumulate in the valve bottom groove due to external objects such as stones, wooden blocks, cement, paper scraps, debris, etc. after washing the pipe with water. It is easy to cause leakage due to the inability to close tightly. The lower part of the soft sealed gate valve adopts the same flat bottom design as the water pipe, which is not easy to cause debris accumulation and makes the fluid unobstructed.

5. Three "O" - shaped sealing rings, as the valve stem adopts a three "O" - shaped sealing ring design. It can reduce the frictional resistance during switching, significantly reduce water leakage, and replace the sealing ring during uninterrupted water construction.

6. Helpful for drinking, due to the non-toxic epoxy resin coating inside the valve body, the inner and outer surfaces of the gate valve are completely covered with rubber without rust or corrosion, making it suitable for drinking.

7. Precision cast valve body, the valve body adopts precision casting, and the precise geometric dimensions ensure the sealing of the valve without any precision machining inside the valve body.

8. Lightweight, the body is made of ductile iron casting, which reduces the weight by about 20% to 30% compared to traditional gate valves, making it convenient for maintenance.

CHARACTERISTICS OF SOFT SEAL GATE VALVES

1. Low flow resistance. The medium channel inside the valve body is straight, and the medium flows in a straight line with low flow resistance.

2. It is more effortless to open and close. Compared to globe valves, the direction of gate movement is perpendicular to the direction of medium flow, whether it is open or closed.

3. High height, long opening and closing time. The opening and closing stroke of the gate is relatively large, and the lowering is carried out through the screw.

4. The phenomenon of water hammer is not easy to occur. The reason is that the shutdown time is long.

5. The medium can flow in any direction on both sides, making it easy to install. The two sides of the gate valve channel are symmetrical.

6. The structural length (the distance between the two connecting end faces of the shell) is relatively small.

7. Simple shape, short structural length, good manufacturing process, and wide applicability.

PART MATERIAL

MAIN TECHNICAL PARAMETERS

◆ Nominal pressure: 1.0-1.6 MPa

◆ Nominal diameter: 40-1200mm

◆ Working temperature: 0-80 ℃

◆ Flange standard: EN1092-2 PN10/PN16

◆ Test standards: EN1074-1 and 2/EN12266

◆ Applicable media: Clear water or media with physical and chemical properties similar to water

◆ Drive mode: manual

◆ Compliant with standards: DIN3352 F4, EN1171

	Size	L	D		C		B	n-d		b	f	H
	DN50	150	165		125		99	4-19		19	3	280
	DN65	170	185		145		119	4-19		19	3	305
	DN80	180	200		160		133	4-19	8-19	19	3	350
	DN100	190	220		180		154	8-19		19	3	390
	DN125	200	250		210		184	8-19		19	3	470
	DN150	210	285		240		210	8-23		19	3	525
	DN200	230	340		295		265	8-23	12-23	20	3	630
	DN250	250	405		350	355	319	12-23	12-28	22	3	780
	DN300	270	460		400	410	370	12-23	12-28	24.5	4	870
	DN350	290	520		460	470	429	16-23	16-28	26.5	4	1100
	DN400	310	565	580	515	525	480	16-28	16-32	28	4	1200
	DN450	330	640		565	585	548	20-28	20-32	30	4	1300
	DN500	350	670	715	620	650	582	20-28	20-32	31.5	5	1450
	DN600	390	780	840	725	770	682	20-31	20-37	36	5	1650
	DN700-DN1200 or above, please contact us for details