Valve inspection:Analysis & Testing

Why do valve inspection&tesing?

Raymon valves stand for high quality, reliability and technology.

Quality is an integral part of our company strategy and is visible from the care with which we choose the raw

materials. Raymon’s mission is aimed at continuous improvement by enhancing our staff, motivating them and

stimulating them to learn and update themselves.

Alle Ventile

You Need to Know About Newinteg Valve Quality Inspection

valve inspection

Forging inspection(chemical component analysis, tensile impact test,metallographic analysis) incoming quality control(forging and fittings inspection) Process Quality Control(Machining inspection,assembly inspection,stress testing) final inspection(product inspection)

Valve Testing Instruments

Spectrograph
High precision Leeb hardness tester
Impact tester
Rockwell hardness tester
Tensile testing machine

Cryogenic testing chamber
Ultrasonic thickness gauge
Helium mass spectrometer
High temperature test chamber
Microscopic metallographic testing machine

Forging inspection → Incoming inspection → Process inspection → Final test

About Me

Valve factory inspection details

valve inspection

Valve inspection and test items

Raymon Valve Co., Ltd. is a high-tech chemical valve manufacturer integrating R&D, production, sales and service, specializing in the production of power station valves, high temperature and high pressure valves, forged ball valves, three-way ball valves, pigging valves, slurry valves, petrochemical valves Equipment and other products, valve varieties are complete, the first in the industry to pass ISO9001, CE international certification, etc., and put into use in various fields, users highly recognized our company’s valve products.

1. Inspection and test items of various Ventilarten
Valve class		Schieber	Durchgangsventil	Drosselventil	Kugelhahn	Absperrklappe	Membranventil	Plug valve	Rückschlagventil
Check and test items	shell body strength	√	√	√	√	√	√	√	√
	sealing performance	√	√	－	√	√	√	√	√
	Upper sealing performance①	√	√	－	－	－	－	－	－
	quality of castings	√	√	√	√	√	√	√	√
	Continuous trouble-free opening and closing operation	√	√	－	√	√	√	√	－
	Minimum valve body wall thickness	√	√	√	√	√	√	√	√
	Inner cavity cleanliness	√	√	√	√	√	√	√	√
	Maximum opening and closing torque	√	√	－	√	√	√	√	－
	Anti-static test	－	－	－	√	－	－	－	－
	Fire resistance test ②	－	－	－	√	－	－	－	－
	Parts inspection	√	√	√	√	√	√	√	√
	Flow test	√	√	√	√	√	√	√	√

① Valves with upper sealing performance requirements need to be tested for upper sealing

② Other valves can also be tested for fire resistance if they have fire resistance requirements

2. Inspection and test items of Sicherheitsventil, pressure reducing valve and steam trap
Valve class	Sicherheitsventil	Druckminderer	Steam Traps Valves
Inspection and test items	shell body test	shell body test	shell body test
	sealing test	Pressure regulating performance	action performance
	Set pressure deviation	pressure characteristics	Thermal condensation junction water Displacement
	discharge pressure	Traffic characteristics	Air leakage volume
	Turn on height	Continuous trouble-free opening and closing operation	Exhaust Air Capability
	Mechanics Characteristics	sealing performance	Continuous trouble-free opening and closing operation
	action repetitiveness	flow	quality of castings
	Opening and closing pressure difference	quality of castings	highest working pressure
	Displacement	Inner cavity cleanliness	Minimum working pressure
	quality of castings	－	Maximum working back pressure
	Inner cavity cleanliness	－	Maximum subcooling and minimum subcooling
	－	－	Inner cavity cleanliness
	－	－	－
	－	－	Withstand voltage test①

①The withstand pressure test is a test of the trap parts that are subjected to external pressure (such as the ball of the floating ball trap, etc.)

3. Factory test and type test items of safety valve, pressure reducing valve and steam trap
Sicherheitsventil			Druckminderer			Steam Traps Valves
Test item	out of factory	Type	Test item	out of factory	Type	Test item	out of factory	Type
shell body strength	√	√	shell body strength	√	√	shell body strength	√	√
sealing test	√	√	sealing test	√	√	action performance	√	√
set pressure	√	√	Pressure regulating performance	√	√	Minimum working pressure	－	√
emission pressure	√	√	Traffic Features	－	√	highest working pressure	－	√
Opening pressure deviation	－	√	pressure characteristics	－	√	Maximum working back pressure	－	√
Turn on height	－	√	flow	－	√	Exhaust Air Capability	－	√
mechanical features	－	√	Continuous running test	－	√	Maximum subcooling and minimum subcooling	－	√
Displacement	－	√	－	－	－	Air leakage volume	－	√
－	－	－	－	－	－	Thermal condensation junction water Displacement	－	√

4. Key items and main items for valve quality grade assessment ①②
Valve class	Schieber	Durchgangsventil	Drosselventil	Kugelhahn	Absperrklappe	Membranventil	Plug valve	Rückschlagventil
shell body test	△	△	△	△	△	△	△	△
sealing performance test	△	△	－	△	△	△	△	△
Upper sealing test ③	△	△	－	－	－	－	－	－
quality of castings	△	△	△	△	△	△	△	△
Continuous trouble-free opening and closing operation	△	△	－	△	△	△	△	－
Minimum valve body wall thickness	○	○	○	○	○	○	○	○
Inner cavity cleanliness	○	○	○	○	○	○	○	○
Maximum opening and closing torque	－	○④	－	－	○	－	－	－
gate-Wear-Margin	○	－	－	－	－	－	－	－
Flange dislocation during non-processing	○	－	－	－	－	－	－	－
valve body lining material	－	－	－	－	－	○⑤	－	－
Diaphragm Performance	－	－	－	－	－	○	－	－

①△ is the key item

②○ is the main item

③ Valves with upper sealing performance requirements should be tested for upper sealing

④High pressure balance globe valve has this requirement

⑤Applicable to lined diaphragm valve

5. Key items and main items for quality grade assessment of safety valves, pressure reducing valves and steam traps①②
Sicherheitsventil		Druckminderer		Steam Traps Valves
shell body test	△	shell body strength	△	shell body test	△
sealing test	△	Pressure regulating performance	△	action performance	△
Opening pressure deviation	△	pressure characteristics	△	Withstand voltage test④	△
discharge pressure	△	Traffic Features	△	Thermal condensation junction water Displacement	△
Turn on height	△	quality of castings	△	Air leakage volume	△
mechanical features	△	Continuous trouble-free opening and closing operation	△	Exhaust Air Capability	△
action repetitiveness	△	sealing performance	○	quality of castings	△
Opening and closing pressure difference	△	Inner cavity cleanliness	○	Continuous trouble-free opening and closing operation	△
Spring ③	△	－	－	highest working pressure	○
quality of castings	△	－	－	Minimum working pressure	○
Inner cavity cleanliness	○	－	－	Maximum working back pressure	○
Displacement	○	－	－	maximum subcooling	○
－	－	－	－	Inner cavity cleanliness	○
－	－	－	－	Pouring-buckle residual amount⑤	○
－	－	－	－	Residual amount after welding repair⑥	○

①△ is the key item

②○ is the main item

③Suitable for spring type safety valve

④For trap parts that are subject to external pressure, such as the ball of a floating ball steam trap, etc.

⑤, ⑥ Applicable to mechanical type steam trap with closed float

High temperature valves mainly refer to high temperature valves used in oil refineries. High temperature working conditions mainly include sub-high temperature, high temperature grade I, high temperature grade II, high temperature grade III, high temperature grade IV, and high temperature grade V. See more or contact us for options for various conditions!

Warum Raymon Ventile wählen?

Kundenspezifische Fertigung nach Bedarf

Wir begrüßen Kunden, die ihre branchenspezifischen Anforderungen mitbringen. Unsere Industriellen Ventillösungen kundenspezifische Fertigung auf Anfrage! Verwendung der besten Materialien zur Produktion normkonforme Ventile, Wenn Sie kundenspezifische Ventildienstleistungen benötigen, kontaktieren Sie uns bitte sofort

Ventilqualität

Raymon Valve kontrolliert die Produktqualität in jedem Prozess streng; andererseits verbessert es die Arbeitsqualität der Mitarbeiter; und strebt ständig nach hoher Leistung und hoher Qualität der Produkte und hat sich zum Ziel gesetzt, die bevorzugte Marke für Ventilprodukte für die Mehrheit der Benutzer zu werden.

Professionelle Dienstleistungen

Unser Vertriebsmitarbeiter beantwortet Ihre Fragen zu Branchen, Produkten, Transport usw. Unser Servicepersonal ist 7x12 Stunden online. Wenn Sie Probleme mit Zeitunterschieden haben, warten Sie bitte geduldig auf unsere Antwort, und wir werden Ihnen so schnell wie möglich antworten.

Hohe und neue Technologie

Als High-Tech-Unternehmen in China können wir vollständige Ventil-Musterzeichnungen, technischen Support für den Ventilproduktionsprozess, technischen Support wie Wartungshandbücher und Festigkeitsberechnungsbücher anbieten. Häufig gestellte Fragen zum Ventilbetrieb. .

F&E-Innovation

Raymon Valve hat viel Personal und Mittel in die innovative Forschung und Entwicklung von Ventilen investiert und Labore, Inspektionsräume und F&E-Räume eröffnet. Jährlich werden 20 Arten von neuen Produkten entwickelt. Kundenspezifische branchenspezifische Ventile für Kunden, Dutzende von Produkten unter extremen Ventilbedingungen. .

Internationale Standards

Die von uns produzierten Ventile erfüllen verschiedene internationale Prüfindikatoren, und alle Arten von Ventilen werden gemäß relevanten nationalen Standards wie GB und JB sowie internationalen Standards wie ANSI, API, JIS und BS hergestellt und abgenommen. DIN. Bitte kontaktieren Sie uns für spezielle Produktionsstandards.

Wir sind nicht nur ein Hersteller von Ventilen, sondern auch ein Verbreiter von Branchenwissen

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