Can it be used for steam above 150 C?

No. Do not use for steam above 150 C unless a written project-specific approval, rated gasket, and compatible body material are confirmed.

Can it replace any grooved fitting without checking pipe OD?

No. Pipe OD, groove standard, working pressure, gasket material, and certification scope must be matched.

Is it suitable for potable water by default?

No. Potable water use requires confirmation of coating, gasket compound, local sanitary approval, and project compliance.

Can it be used in corrosive chemical service?

Not by default. Chemical compatibility must be verified against the medium, concentration, temperature, and coating system.

Industrial Valves

Silent check valve

Name: Silent check valve
Brand: Junyue
SKU: silent-check-valve
Availability: InStock

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Product Overview

Silent check valve is manufactured by Junyue for grooved piping systems, fire protection networks, and industrial fluid handling. Constructed from ductile iron conforming to ASTM A536, rated for a maximum working pressure of 300 PSI, and available with UL and FM approvals.

Product Description

Detailed Description

·Certificate: Pending

·Standard: ASME B 16.1

·Connection: Flange as Ansi125/150

·Test: Factory hydro test 450 psi

·Temperature: 0℃ to 100℃

W.pressure: 300 psi

·Surface: Epoxy coating as Ral3000

Main partsandmaterial

Body	Ductileiron as A536,65- 45-12	Hinge pin	AISI 420
Disc	Ductile iron+EPDM	Support	Ductile iron or Brass/Bronze
Seat ring	Brass	Spring	StainlessSteel 304

Available****size

Size	Pressure	Length/mm	Ref No .
in	mm	Psi	A	D	L
2"	50	300	98	152	100	S110050
21/2"	65	300	124	178	120	S110065
3"	80	300	124	191	140	S110080
4"	100	300	180	229	170	S110100
5"	125	300	220	254	200	S110125
6"	150	300	256	279	230	S110150
8"	200	300	330	343	288	S110200

more:https://www.sdjunyue.cc/valve.html

Compatibility

Drop-in replacement

This Junyue grooved piping component is engineered for seamless compatibility with Victaulic Style 07 and Grinnell system layouts. Verify pipe OD, groove profile, gasket compound, pressure class, and project approvals before specifying as a replacement.

Technical FAQ

Application limits

Can it be used for steam above 150 C?: No. Do not use for steam above 150 C unless a written project-specific approval, rated gasket, and compatible body material are confirmed.
Can it replace any grooved fitting without checking pipe OD?: No. Pipe OD, groove standard, working pressure, gasket material, and certification scope must be matched.
Is it suitable for potable water by default?: No. Potable water use requires confirmation of coating, gasket compound, local sanitary approval, and project compliance.
Can it be used in corrosive chemical service?: Not by default. Chemical compatibility must be verified against the medium, concentration, temperature, and coating system.

Order & Delivery

Shipping and lead time

Factory: Weifang, Shandong, China
Port: Qingdao Port, approx. 2 hours
Lead Time: FCL 15-20 days
Certificate: EN 10204 3.1 mill test certificate available

Certifications

Quality & compliance

Junyue products are manufactured under ISO 9001, ISO 14001, and ISO 45001 management systems, with UL listings and CE marking for international markets.

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