Soft Seal Gate Valve

Gate valve is one of the most widely used valves in a variety of fluid delivery projects. Traditional gate valve, the prevalence of fluid leakage, serious rust and other internal parts and so on. Currently on the market of ordinary soft-sealed gate valve stem seal easy to leak, can not continue to water and at any opening of the case to replace the seal.
Elastic seat sealing gate valve adopts novel structural design, strict manufacturing technology and new material with high performance, overcoming the defects of traditional gate valve sealing, the internal parts are especially prone to rust on the gate, fatigue and aging of rubber elasticity, reliable sealing performance, Operate lightly, maintain simple and convenient, long service life. It is suitable for domestic water system, water supply and drainage system, sewage treatment system, chemical fluid delivery system and so on. It is used as a truncation device in construction, city environmental protection, petrochemical, pharmaceutical, food, metallurgy, textile, electric power and other industries Suitable for throttling).

Features
Elastic seat gate valve, the main seal is a rubber-covered monolithic gate, in the operation of force and pressure generated by a small amount of adaptive elastic deformation, and precision casting valve seat to form an excellent seal.
◆ Nodular cast iron shell
Body and bonnet material is ductile iron, high strength and corrosion resistance. Seat and valve body as a whole casting precision casting, without any processing.
◆ full-diameter flat runner
When the valve is fully open, the gate is completely free from the runner, and the groove at the bottom of the valve seat is not easy to accumulate debris, which is the same as that of the straight pipe, and the flow resistance is the lowest.
◆ All bags plastic gate
High-performance rubber will be all wrapped skeleton, cast iron thoroughly with the media isolation, non-corrosive. Rubber soft seal, and the skeleton of the firm knot, the overall heat-vulcanized shape.
◆ Monolithic copper nut
Gate nut and skeleton as a whole connected, no movement of empty trip and loose phenomenon. Bronze material, self-lubricating with the stem, reducing operating torque.
◆ gate rail system
Valve body and gate with rail system. When the gate seal water pressure does not drift, lifting rubber contactless wear, to prevent stem bending.
◆ stainless steel stem
Stainless steel corrosion-resistant stem, trapezoidal thread rolling, thread wear-resistant smooth, effectively reduce the operating torque, improve service life.
◆ Double thrust bearings (dark rod type DN ≤ 300)
Stem neck with double thrust bearings, flip-type stem to avoid being washed out by water pressure. Bronze material, self-lubricating with the stem, reducing operating torque.
◆ Stem axial seal (dark rod type)
Three O-rings, axial self-sealing under water pressure, no packing seal adjustment trouble. Top dust ring to prevent external impurities into the shaft seal inside.
◆ inverted seal structure (dark rod DN ≤ 300)
Patented inverted seal structure, allowing the valve in the water and at any angle in the emergency opening, replace the gland at the O-ring.
◆ flange connection
High-intensity point hole screws, hot-melt adhesives and bonnet rubber ring closed, the screw and the working medium and the external environment completely isolated.
◆ double feet double rings
All specifications of the gate valve, the valve body cast as a whole with two legs, the valve cover cast a total of two rings, easy handling and storage.
◆ non-toxic anti-corrosion coating
The inner and outer surfaces of the valve are made of non-toxic epoxy powder electrostatic coating, anti-corrosion long life, can be used directly for drinking water, food and medicine industries.
◆ various types of operation
Dark rod structure, the rod type. Available handwheel, T-handle, electric, pneumatic and other device operation, the valve position instructions, valve position signal output, password lock control, extend the operating rod, Buried devices to choose from.
◆ installation and construction convenience
With flange, clamp groove, socket, socket, mechanical connectors, PE connectors and other connections, optional telescopic function, and cast iron, steel, plastic and other pipe connections.

Executive Standard
1. Valve design and manufacturing according to GB / 24924-2010 standards;
2. The length of the valve structure according to the provisions of GB / T12221-2005;
3. Inspection and testing should be consistent with the relevant provisions of GB / T13927-2008;
4. Flange size according to the provisions of GB / T17241.6-2008;

Technical Parameters

Nominal size	DN40~DN800
Suitable media	Clear water, or similar physical and chemical properties of water medium (Sewage, raw water, hot water, oil medium, please specify)
Operating temperature℃	0-70 (standard configuration) 0-100 (hot water configuration)
Nominal pressure	PN10	PN16	PN25
Work pressure（MPa)	≤1.00	≤1.60	≤2.50
Strength test（MPa)	1.50	2.40	3.75
Seal test（MPa)	1.10	1.76	2.75
Low pressure test（MPa)	0.02	0.02	0.02

Main material

Serial number	name	material
1	Body	QT450
2	Valve plate	QT450+NBR
3	Stem nut	QT450
4	Valve stem	20Cr13
5	Flange seals	NBR
6	cap	QT450
7	O-ring	NBR
8	O-ring	NBR
9	Countersunk head bolt	35#
10	Dust cover	NBR
11	Round head screw	35#
12	Handwheel	QT450
13	Gland	QT450
14	Countersunk head bolt	35#

The main shape and connection dimensions

Nominal diameter	The main dimensions and connection dimensions
	L	D	D1	D2	C	F	Z-d	H
Z45X-10Q
40	165	150	110	84	19	3	4-Φ19	240
50	178	165	125	99	19	3	4-Φ19	240
65	190	185	145	118	19	3	4-Φ19	260
80	203	200	160	132	19	3	8-Φ19	275
100	229	220	180	156	19	3	8-Φ19	380
125	254	250	210	184	19	3	8-Φ19	410
150	267	285	240	221	19	3	8-Φ23	435
200	292	340	295	266	20	3	8-Φ23	630
250	330	395	350	319	22	3	12-Φ23	645
300	356	445	400	370	24.5	4	12-Φ23	697
350	381	505	460	429	24.5	4	16-Φ23	802
400	406	565	515	480	24.5	4	16-Φ28	842
450	432	615	565	530	25.5	4	20-Φ28	1060
500	457	670	620	582	26.5	4	20-Φ28	1170
600	508	780	725	682	30	5	20-Φ31	1300
700	610	895	840	794	32.5	5	24-Φ31	1550
800	660	1015	950	901	35	5	24-Φ34	1750
900	711	1115	1050	1001	37.5	5	28-Φ34	1950
1000	811	1230	1160	1112	40	5	28-Φ37	2170
Z45X-16Q
40	165	150	110	84	19	3	4-Φ19	240
50	178	165	125	99	19	3	4-Φ19	240
65	190	185	145	118	19	3	4-Φ19	260
80	203	200	160	132	19	3	8-Φ19	275
100	229	220	180	156	19	3	8-Φ19	380
125	254	250	210	184	19	3	8-Φ19	410
150	267	285	240	221	19	3	8-Φ23	435
200	292	340	295	266	20	3	12-Φ23	630
250	330	405	355	319	22	3	12-Φ28	645
300	356	460	410	370	24.5	4	12-Φ28	697
350	381	520	470	429	26.5	4	16-Φ28	802
400	406	580	525	480	28	4	16-Φ31	842
450	432	640	585	548	30	4	20-Φ31	1060
500	457	715	650	609	31.5	4	20-Φ34	1170
600	508	840	770	720	36	5	20-Φ37	1300
700	610	910	840	794	39.5	5	24-Φ37	1550
800	660	1025	950	901	43	5	24-Φ40	1750
900	711	1125	1050	1001	46.5	5	28-Φ40	1950
1000	811	1255	1170	1112	50	5	28-Φ43	2170