The difference between the metal hard seal cast steel fixed ball valve and the soft seal fixed ball valve is that the latter is a soft sealing valve seat, while the former's ball and valve seat are hardened by special process, and there are many hardening methods, such as integral nitriding, flame spraying, surfacing welding and so on (not limited to this). The selection of hardening mode depends on the working medium or use High temperature metal hard sealed cast steel fixed ball valve is widely used in petroleum, chemical industry, metallurgy, papermaking, electric power, mining and other industries, especially suitable for medium with high temperature and various dust and solid particles.

Product Name: metal hard seal cast steel fixed ball valve
Product series: fixed ball valve series, nominal diameter: DN50 ~ DN600, NPS2 "~ 24"
The nominal temperature is - 150.0mpa, the working pressure is - 150.0mpa

1. The main valve body, auxiliary valve body, gland and other main parts of the product are molded by casting, which has the advantages of light weight and lower cost than forged steel valve.  
2. The flexible movable metal valve seat structure with cylindrical spring or wave spring preload is adopted. The design of sealing preload is reasonable and the closing and opening is flexible, which can effectively ensure the reliability of sealing.  
3. The ball is made of super British speed spraying wear-resistant alloy powder, and the valve seat is overlaid with Stellite cemented carbide and sprayed with other super wear resistant alloy materials.  
4. The sealing surface is finely ground, and the sealing is reliable.  
5. Full diameter channel design, small flow resistance and large flow capacity.  
6. The valve rod anti fly out design is safe and reliable. The anti-static function can be designed according to the requirements.  
7. Automatic pressure relief valve seat design, once the valve body cavity abnormal pressure rise, the valve seat will automatically release to the low pressure end, more safe.  
8. Both the upper and lower valve stems are designed with bearing structure, and the torque is lighter in the process of opening and closing.  
9. A variety of drive mode options: manual, worm gear drive, pneumatic, electric, hydraulic, pneumatic linkage, etc.; can also be used with the automatic transportation control.

Design and manufacture Design and Manufacture	Structural length Face To Face	Flange size Flange Dimension	Pressure temperature Pressure Temperature Lating	Test inspection Inspection And Test
GB122237	GB12221	GB9113 JB79	GB9131	GB/T13927 JB/T9092

Pressure test

Nominal pressure NominalPressure	1.6	2.5	4.0
strength test Shell Test	2.4	3.8	6.0
Water seal test Water Seal Test	1.8	2.8	4.4
Airtight seal test Air Seal Test	0.4-0.7

Material and performance of main parts

valve body Body	WCB	ZG1Cr18Ni9Ti	CF8	CF3	ZG1Cr18Ni12Mo2Ti	CF8M	CF3M
Ball stem Ball Stem	2Cr13	1Cr18Ni9Ti	304	304L	1Cr18Ni12Mo2Ti	316	316L
Valve seat Seat	Polytetrafluoroethylene (PTFE) and Poe fiber reinforced polytetrafluoroethylene PTFE + glass p-phenylene ppl
shim Shim	PTFE stainless steel / flexible graphite serrated gasketTooth Profile Gasket
Stem seat Stem Seat	PTFE stainless steel / flexible graphite Stainless Steel/Flexible Graphite
filler Packing	PTFE reinforced flexible graphite Enhanced Flexible Graphite
Packing gland Gland	WCB	1Cr18Ni9Ti	304	304L	1Cr18Ni12Mo2Ti	316	316L
temperature Temperature	-29～150（Polytetrafluoroethylene PTFE) - 29 ～ 200 (glass fiber reinforced polytetrafluoroethylene PTFE + glass) - 29 ～ 300 (PPL)
medium Medium	Steam oil Water steam Oil goods	Nitric acid Nitric Acid		Strong oxidation medium strongey oxidable medium	Acetic acid Acetic Acid		ureas Urea

 

Lattice and main dimensions

1.6MPa	DN	L	D	D1	D2	b	n-φd	H0	H1	H2
Raised face flange RF Q347F 16C 16P 16R	32	140	135	100	78	16	4-18	30	85	160
	40	165	145	110	85	16	4-18	32	95	230
	50	178	160	125	100	16	4-18	43	107	230
	65	190	180	145	120	18	4-18	70	142	400
	80	203	195	160	135	20	8-18	110	152	400
	100	305	215	180	155	20	8-18	150	178	500
	125	356	245	210	185	22	8-18	200	252	500
	150	394	280	240	210	24	8-23	230	278	600
	200	457	335	295	265	26	12-23	260	395	600
	250	533	405	355	320	30	12-25	283	480	800
	300	610	460	410	375	30	12-25	380	585	800
	350	686	520	470	435	34	16-25	425	625	800
	400	762	580	525	485	36	16-30	492	720	800
	500	914	705	650	608	44	20-34	555	840	830
	600	1067	840	770	718	48	20-41	675	1050	830
	700	1245	910	940	788	50	24-41	850	1150	830

(1) In strict accordance with the requirements of the contract, to provide qualified products that meet the design standards.
(2) Strictly check and control the quality of raw materials, components and accessories.
(3) Ensure that the processing technology of the equipment is perfect and the detection means are complete. Products will never leave the factory with defects.
(4) Be fully responsible for the supply, quality, equipment performance, technical interface, service and other aspects of the subcontractor. The key parts specified in the contract must meet the requirements of relevant qualification and be approved by the demander.
(5) Provide relevant department standards and drawings to the supervision unit according to the contract, provide convenience for the supervision, and inform the demander and the supervision representative of the shutdown parts of the supervision equipment 7 days in advance. The supervision assigned by the demander is to urge us to produce qualified products according to the standards, but it does not reduce all our quality responsibilities.
(6) The quality defects in the process of equipment manufacturing shall be timely reported to the demander and the supervision representative without concealment. If the equipment defect exceeds the standard specified in the contract, the supplier shall replace it unconditionally. In the process of installation and trial operation, if there are quality problems of the equipment, the problems should be dealt with first, and then the responsibilities should be clarified. Everything should be based on the requirements of project progress.
(7) In case of any accident, we will replace and repair the supplied equipment free of charge as soon as possible until the demander is satisfied.
(8) In case of missing parts or missing parts caused by other reasons in the process of unpacking, we are responsible for making up the missing parts for free as soon as possible. We shall be responsible for the quality problems found during the installation and commissioning of the equipment and in the operation of the equipment in the future.
(9) Provide the demander with all technical data and drawings according to the contract on time. Have the obligation to invite the demander to participate in our technical design audit when necessary.
(10) According to the time required by the demander to the site for technical services, guide the demander to install, trial run and trial production according to the requirements of our technical data and drawings.
(11) For the supporting equipment related to the contract equipment purchased by the demander first, we will actively provide the technology meeting the equipment interface requirements
Conditions and information.
(12) Strictly implement the minutes or agreements of the meeting held by both parties on relevant issues.
(13) According to the provisions of the contract, free business training courses on equipment installation, commissioning, use and maintenance technology shall be held for the demander.
(14) Strengthen pre-sale, in-sales and after-sales services, and implement "24-hour service", "advanced service", "whole process service" and "life-long service" in the whole process of product manufacturing, installation, commissioning and overhaul.
(15) After receiving the quality problem information reflected by the demander, reply within 24 hours or send service personnel to the site as soon as possible, so as to ensure that the user is not satisfied with the quality and the service does not stop.
(16) Free for the product to provide lifelong maintenance, where our factory users, have established a detailed user file, our factory after-sales service. Regular return visit and inspection system are implemented to guide the daily maintenance of users, and timely point out and solve possible faults.
(17) At any time to meet the demander's requirements for spare parts, lifetime to provide users with high-quality and low-cost spare parts.