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Uni-body Flange Ball Valve

Brand : HFT

Product origin : Wenzhou

Delivery time : 2-5weeks 20000set/month

Supply capacity : 10000set

Design and Inspection Standard:

Pressure-Temperature RatingsASME B16.34
Shell Wall ThicknessASME B16.34
Face-to-face DimensionsASME B16.10
End connection DimensionsASME B16.5
Pressure TestAPI 598, API 6D (Optional)
Fire Safe TestAPI 607, API 6FA (Optional)
MarkingMSP-SP 25
Surface QualityMSP-SP 55
Sour ServiceNACE0175
Low Fugitive EmissionISO 15848, TA-Luft, SPE 77/312


By using the modern computer technology, HFT Technical department continuous offering high performance valves for our customers. Our principle is to develop safe but cost-efficient valve. So we deploy the up to date software such as Soildworks and Ansys to strengthen our research and design ability in terms of the finite element analysis, fluid and fatigue analysis to simulation the valve application which lead to vividly shortening the product development cycle.

Design Features

Blow-out Proof Stem

The lower end of the stem is T-shaped structured, protected by boss of body, which assures stem retention at any pressure and acts as backseat. (Fig 1)

Anti-static Device

A spring-loaded plunger fitted on stem keeps constant contact between ball, stem and body to create an electric path to transfer charges, avoiding acceleration of static electricity as a result of friction during valve on-off. Such build-up is utterly hazardous to some services. (Fig2)


Fire Safe - Metal to Metal Sealing

When soft seats are decomposed or ruined by fire, the ball, driven by pressure, comes into contact with the metal lipseal seat of original soft seat, creating a metal-to-metal seal to

shut off service fluids and minimize internal leakage.

Additionally, the fire safe metal seat prevents damage the medium imposed on soft seat and minimizes creep of nonmetal materials. All the floating valves are designed to be fire safe per API 607 and are tested and certified by the third party.

Low Emission Control

Modern industry sectors are challenged by valve fugitive emission to control service fluids released from the valve and curb environmental degradation. Therefore, emission control features HFT floating ball valves

Low emission packing is assembled, whose max. leaking rate of design and test stands at 100 PPM (Test is performed according to ISO15848)

Material Specifications 

NoPartStandardStainless SteelSour ServiceLow Temperature
3BallASTM A182-F304ASTM A182-F316ASTM A182-F304ASTM A182-F316
4LeverCarbon SteelCarbon SteelCarbon SteelCarbon Steel
7StemASTM A182-F304ASTM A182-F316ASTM A182-F304ASTM A182-F316
8GlandASTM A276-420ASTM A276-316ASTM A276-420ASTM A276-316
12StudASTM A193-B7ASTM A193-B8ASTM A193-B7MASTM A320-L7M
13NutASTM A194-2HASTM A194-8ASTM A194-2HMASTM A194-7M
14BoltASTM A193-B7ASTM A193-B8ASTM A193-B7MASTM A320-L7M
15Anti-static DeviceSSSSSSSS
16Stop PlateCarbon SteelSSCarbon SteelSS
17RetainerCarbon SteelSSCarbon SteelSS
18WasherCarbon SteelSSCarbon SteelSS
19BoltCarbon SteelSSCarbon SteelSS



[mm] (")[mm][kg][Nm]
15 (½)108909,58121,516435225071,66
20 (¾)11798,51599261643522,75092,19
25 (1)12710820102291643522,75092,710
40 (1½)16512732117512103534,550125,121
50 (2)178152,44013361,5213554270137,925
80 (3)203190,558148763485544701614,340
100 (4)229228,68018992,54457044,51021825,990
150 (6)2672801112311294958556,51252043,8180
200 (8)29234314426415869885561252577250

[mm] (")[mm][kg][Nm]
15 (½)140959,58121,516435225071,610
20 (¾)1531181599261643522,75092,112
25 (1)16512420102291643522,75094,116
40 (1½)19015632117512103534,550128,230
50 (2)2161654013461,52135542701310,935
80 (3)28321058148763485544701621,460
100 (4)3052548018992,54457044,51021828,9150
150 (6)4033201112271294958556,51252070280
200 (8)419380144264158698855612525110,5420

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