Non-Slam Axial Flow Check Valve

Size Range: 2” to 12”

Body: A216 Grade WCB, stainless steel

Connection Options: Flange

Working Pressure: PN10, PN16,150LB

Working Temperature: -0°C to 80°C

Applicable Medium: Oil, Gas, Water

Product Overview

The Axial Non-Slam Check Valve is an advanced flow control device engineered for efficient and reliable operation in a wide range of industrial applications. Designed to prevent reverse flow while minimizing pressure surges, this valve ensures smooth and uninterrupted pipeline operation.

Product Features

Axial flow design minimizes pressure drop and energy loss
Non-slam operation prevents water hammer and system vibration
Fast response disc ensures quick closing and backflow prevention
Compact, streamlined structure for easy installation
Low noise operation suitable for sensitive pipeline systems
Excellent sealing performance with minimal leakage
Ideal for high-flow, high-velocity applications in water and industrial systems

Specification Parameters

• Nominal pressure: PN10, PN16, 150LB
• Strength testing pressure: PT 1.5, 2.4, 3.0, 2.4 MPa
• Seal testing pressure (high pressure): 1.1, 1.8, 2.2, 1.5 MPa
• Applicable media: water and corrosive medium
• Applicable temperature: 0 ~ 80°C

Design Standards

• Design & Manufacture as per: GB/T 12235, ASME B16.34
• Connection ends dimension as per: JB/T 79, HG/T 20592, ASME B16.5
• Inspection and test as per: GB/T 26480, API 598

Component	Carbon Steel Body	Stainless Steel Body
Body	A216 WCB	A351 CF8M
Disc/Stem Assembly	A351 CF8M / A479 316	A351 CF8M / A479 316
Seat	A351 CF8M	A351 CF8M
Spring (1)	A313 316	A313 316
Bushing	A479 316	A479 316
Gasket (2)	CFG / 316 SS / Graphite	CFG / 316 SS / Graphite

Main Overall Dimensions

GB – PN16

DN	L	d	D	D1	D2	C	f	n-Φb
50	120	50	160	125	100	16	3	4-Φ18
65	130	63	180	145	120	18	3	4-Φ18
80	150	80	195	160	135	20	3	8-Φ18
100	165	100	215	180	155	20	3	8-Φ18
125	190	124	245	210	165	22	3	8-Φ18
150	210	148	285	240	212	22	2	8-Φ22
200	255	198	340	295	268	24	2	12-Φ22
250	310	240	405	355	320	26	2	12-Φ26
300	320	297	460	410	378	28	2	12-Φ26

ANSI Class 150 LB

Size	L	d	D	D1	D2	C	f	n-Φb
2″	120	50	150	120.7	92.1	16.3	2	4-Φ19
2 1/2″	130	63	180	139.7	104.8	17.9	2	4-Φ19
3″	150	80	190	152.4	127	19.5	2	4-Φ19
4″	165	100	230	190.5	157.2	24.3	2	8-Φ19
5″	190	124	255	215.9	185.7	24.3	2	8-Φ22.5
6″	210	148	280	241.3	215.9	25.9	2	8-Φ22
8″	255	198	345	298.5	269.9	29.0	2	8-Φ22
10″	310	248	405	362	323.8	30.6	2	12-Φ25
12″	320	297	485	431.8	381	32.2	2	12-Φ25

Specification Applications

Pump discharge lines to prevent reverse flow and water hammer
High-speed flow systems requiring silent and non-slam operation
Water supply and wastewater treatment pipelines
Oil and gas transmission and distribution systems
Power generation cooling water and auxiliary systems
HVAC and district heating networks
Industrial process pipelines where system stability and equipment protection are critical

Valve Actuation

Process Optimization

Precision Engineering

Pipeline Solutions

Industrial Valves

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