Description

The Spirax Sarco BSA3-BD is an in-line stop valve with tri-ply bellows fitted as standard throughout the range. It is designed for use on steam, gas, liquid, thermal oil, condensate, and water systems.

The BSA3-BD is supplied with a flat, balanced pressure plug as standard.

Standards

The product fully complies with the requirements of the EU Pressure Equipment Directive and UK Pressure Equipment (Safety) Regulations and carries the mark when so required.

Certification

The BSA3-BD body and bonnet are available with certification to EN 10204 3.1.

Note: All certification and inspection requirements must be stated at the time of order placement.

Range and options

Standard BSA-BD range, complete with balanced disc:

Model	Connection standard	Pressure rating	Available sizes
BSA3-BD	EN 1092 / EN 12516-1 flanged	PN16	DN200, DN250, DN300, DN350, DN400
BSA3-BD	EN 1092 / EN 12516-1 flanged	PN25	DN200, DN250, DN300, DN350, DN400
BSA3-BD	EN 1092 / EN 12516-1 flanged	PN40	DN200, DN250, DN300, DN350, DN400

Seat leakage

Disc to seat shut-off conforms to EN 12266-1 Rate A leakage.

Kv values

All BSA3-BD valves are supplied with a balanced disc.

Size	DN200	DN250	DN300	DN350	DN400
Kv	593	935	1264	1804	2362

For conversion:

• Cv (UK) = Kv × 0.963
• Cv (US) = Kv × 1.156

Materials

No.	Part	Material	Standard / Notes
1	Body	Cast steel	1.0619+N
2	Bonnet	Cast steel	1.0619+N
3	Seat	A105 and Stellite	-
4	Disc	Stainless steel	DIN 17440 X30 Cr13 and Stellite
5	Bellows	Stainless steel	DIN 17440 X6 Cr Ni Ti 1810
6	Stem	Stainless steel	AISI 420
7	Bonnet nut	Steel	ASTM A194 2H
8	Bonnet stud	Steel	ASTM A193 B7
9	Body / bonnet gasket	Graphite laminated with stainless steel insert	-
10	Handwheel	Carbon steel	DN200 and DN250
10	Handwheel	Cast iron	DN300 to DN400
11	Strap	Stainless steel	ASTM A276 304
12	Self locking nut	Stainless steel	-
13	Balance plug	Stainless steel	DIN 17440 x 30 Cr13 and Stellite
14	Locking washer	Stainless steel	ASTM A276 304
15	Stem packing	Graphite	-

Pressure/temperature limits

The product must not be used in the shaded region or beyond the PMA or TMA of the relevant end connection.

Rating	Curve	Body design condition	PMA	TMA	Minimum allowable temperature	PMO	TMO	Minimum operating temperature	Minimum operating pressure	Maximum differential pressure	Maximum cold hydraulic test pressure
PN16	A-D-D	PN16	16 bar g @ 0 °C	400 °C @ 9.5 bar g	-10 °C	13.5 bar g	400 °C @ 9.5 bar g	-10 °C	0 bar g	Limited to PMO	24 bar g
PN25	A-C-C	PN25	25 bar g @ 0 °C	400 °C @ 14.8 bar g	-10 °C	20.5 bar g	400 °C @ 14.8 bar g	-10 °C	0 bar g	Limited to PMO	37.5 bar g
PN40	A-B-B	PN40	40 bar g @ 0 °C	400 °C @ 23.8 bar g	-10 °C	31.3 bar g	400 °C @ 23.8 bar g	-10 °C	0 bar g	Limited to PMO	60 bar g

Dimensions and weights

Dimensions and weights are approximate, in mm and kg.

Size	A	B	C	D	Weight
DN200	600	612	500	800	180
DN250	730	765	500	990	316
DN300	850	1005	600	1265	480
DN350	980	1095	650	1420	690
DN400	1100	1173	700	1505	950

Safety information, installation and maintenance

For full details, see the Installation and Maintenance Instructions (IM-P184-19) supplied with the product.

Installation note

Install in the direction of flow given by the arrow on the body, with the handwheel in a suitable position.

Disposal

These products are recyclable. No ecological hazard is anticipated with the disposal of these products, providing due care is taken.

Please visit the Spirax Sarco product compliance web pages:

https://www.spiraxsarco.com/product-compliance

for up to date information on any substances of concern that may be contained within this product. Where no additional information is provided on the Spirax Sarco product compliance web page, this product may be safely recycled and/or disposed of, providing due care is taken. Always check local recycling and disposal regulations.

How to order

Example: 1 off DN200 Spirax Sarco type BSA3-BD bellows sealed stop valve, flanged EN 1092 PN40.

Spare parts

The spare parts are shown in heavy outline. Parts drawn in a grey line are not supplied as spares.

Available spares

Available spare	Parts included
Body / bonnet gasket and stem packing	15 and 9 (2 off)
Stem and bellows assembly	5, 6, 12, 14, 15 and 9 (2 off)
Disc (state full description of the valve)	4, 12, 13, 14, 15 and 9 (2 off)

How to order spares

For customer convenience, spares are supplied in kits to ensure that all the appropriate replacement parts are available for a specific maintenance task. For example, when a stem and bellows assembly is ordered, parts 9, 12, 14, and 15 are included in the kit.

Always order spares using the description given in "Available spares" and state the size and type of stop valve.

Example: 1 - Body / bonnet gasket and stem packing for a DN200 Spirax Sarco BSA3-BD PN40 bellows sealed stop valve.