Wafer-type check valve

The dual-disc check valve consists primarily of key components such as the valve body, valve disc, valve stem, and spring, and features a slim, lightweight design. Thanks to the shortened closing stroke between the valve discs and the spring’s action, which accelerates the closing process, this valve can effectively reduce water hammer and minimize water-hammer noise. This valve is mainly used in water supply systems, high-rise buildings, and industrial zones. Due to its shorter face-to-face distance compared to conventional check valves, it is particularly convenient for installations with limited space.

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Valve Encyclopedia

Category:

Check Valve Series

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Product Description

Overview

The double-disc check valve consists primarily of key components such as the valve body, valve disc, valve stem, and spring, and features a slim, lightweight design. Thanks to the shortened closing stroke between the valve discs and the spring’s action, which accelerates the closing process, this valve can effectively reduce water hammer and the associated noise.

This valve is primarily used in water supply systems, high-rise buildings, and industrial zones. Due to its shorter face-to-face distance compared to conventional check valves, it offers greater convenience for installations with limited space.

Technical Parameters

Pressure rating	PN10, PN16
Maximum working pressure	1 MPa, 1.6 MPa
Valve seat test pressure	1.1 MPa, 1.76 MPa
Valve body test pressure	1.5 MPa, 2.4 MPa

Main component materials

Number	Part Name	Materials
1	Valve body	Gray cast iron (PN10)
1	Valve body	Ductile iron (PN16)
2	Valve disc	Aluminum bronze
3	Valve stem	Stainless steel
4	Spring	Stainless steel
5	Valve seat	Rubber

Size Chart

Nominal diameter DN	Product Code	L	L1	D1	D2	D
Nominal diameter DN	Product Code	L	L1	D1	D2	PN10	PN16
50	DDCV-0050	54	6	65	48	105	105
65	DDCV-0065	60	10	78	57	124	124
80	DDCV-0080	67	10	91	70	137	137
100	DDCV-0100	67	20	117	91	162.5	162.5
125	DDCV-0125	83	25	144	113	192.5	192.5
150	DDCV-0150	95	32	171	135	218	218
200	DDCV-0200	127	40	222	176	273	273
250	DDCV-0250	140	59	276	222	328	329
300	DDCV-0300	181	64	327	270	379	378
350	DDCV-0350	184	80	377	320	435	437
400	DDCV-0400	190	106	426	365	482	488
450	DDCV-0450	222	116	478	407	538	556
500	DDCV-0500	229	138	527	454	590	617
600	DDCV-0600	267	169	626	563	685	730
700	DDCV-0700	292	205	722	660	804	804
800	DDCV-0800	318	240	822	760	911	911

Note: If other valves need to be installed downstream of this valve, be sure to take into account the impact of the L1 stroke to avoid collision with internal components in the pipe.

Previous page: Butterfly-type low-resistance slow-closing check valve

Next page: Swing Check Valve

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