Spirax Sarco UIB30 and UIB30H are sealed inverted bucket steam traps designed for either horizontal or vertical installation (with the cover hanging downwards). The UIB30H is designed for higher capacities. When installed with a suitable pipeline connector (available separately), the UIB can easily and simply be removed without breaking into the pipeline, thus speeding up trap replacement with minimal system downtime. Pipeline connectors are available with screwed, socket weld, and flanged end connections. The cover is also available with the option of a threaded base port to allow drainage. The body and cover meet typical industry standards including Charpy testing of 27J @ -30 °C (-22 °F).

Standards and Certification

This product fully complies with the requirements of the Pressure Equipment Directive (PED). It is available with certification to EN 10204 3.1.

Note

All certification/inspection requirements must be stated at the time of order placement.

Pipeline Connector Options

The UIB can be fitted to a variety of pipeline connectors including:

Model	Description	Standard
PC10HP	Straight connector	ASME 600
PC20	Connector with 'Y' type strainer	ASME 300
PC3_	Connector with 1 piston isolation valve	ASME 600
PC4_	Connector with 2 piston isolation valves	ASME 600

Materials

No.	Part	Material	Specification
1	Cover	Stainless steel	ASTM A240 Gr. 304
2	Body	Stainless steel	ASTM A182 F304
3	Bucket	Stainless steel	1.4301
4	Pivot pin	Stainless steel	1.4301
5	Valve seat	Stainless steel	440B
6	Valve	Stainless steel	440B
7	Valve lever	Stainless steel	1.4301
8	Internal tube	Stainless steel	1.4306
9	Flange	Alloy steel - ELNP	ASTM A193 B7
10	Connector screw	Steel	ASTM A193 B7
11	Inlet gasket	Graphite/Stainless steel laminate	AISI 304 strip
12	Outlet gasket	Graphite/Stainless steel laminate	AISI 304 strip
13 *	Drain connection	Stainless steel	ASTM A182 F304 / F304L
14 *	Drain plug	Stainless steel - ELNP	ASTM A479 316
15	Split ring	Stainless steel	ASTM A240 304
16	Crescent ring	Carbon spring steel

* Items 13 and 14 are optional extras that must be specified at the time of order placement.

Pressure/Temperature Limits (ISO 6552)

Restriction

The product must not be used in the dark shaded region. The model of pipeline connector and connections selected will dictate the maximum operating limits of the complete assembly.

Condition	Value
PMA - Maximum allowable pressure	49.6 bar g @ 38 °C (719 psi g @ 100 °F)
TMA - Maximum allowable temperature	425 °C @ 28 bar g (797 °F @ 406 psi g)
Minimum ambient temperature	-30 °C (-22 °F)
PMO - Maximum operating pressure	32 bar g (464 psi g)
TMO - Maximum operating temperature	425 °C @ 28 bar g (797 °F @ 406 psi g)
Minimum operating temperature	0 °C (32 °F)
Designed for maximum cold hydraulic test pressure	75 bar g (1088 psi g)

Maximum Differential Pressure (ΔPMX):

• 30.0 bar: UIB30/4, UIB30H/5
• 20.0 bar: UIB30/5, UIB30H/6
• 12.0 bar: UIB30/6, UIB30H/7
• 8.5 bar: UIB30/7, UIB30H/8
• 5.0 bar: UIB30H/10
• 4.0 bar: UIB30/8
• 2.5 bar: UIB30/10
• 2.0 bar: UIB30H/12
• 1.5 bar: UIB30/12

Capacities

Selection Note

The trap should be selected for the most appropriate working pressure differential and not on the basis of load. For example: 80 kg/h at 7 bar differential should be handled with the UIB30/7 and not the UIB30/4.

Dimensions and Weights

UIB30 and UIB30H + PC10HP

Size	A	B	C (UIB30)	C (UIB30 + PC10HP)	D	E	Weight UIB30	Weight UIB30 + PC10HP	Weight UIB30H	Weight UIB30H + PC10HP
DN15 - 1/2"	61.5	88	124.5	159.0	33.5	83	1.70 kg	2.30 kg	1.85 kg	2.45 kg
DN20 - 3/4"	73.5	86	124.5	159.0	33.5	83	1.70 kg	2.40 kg	1.85 kg	2.55 kg
DN25 - 1"	90.0	89	124.5	159.0	33.5	83	1.70 kg	2.40 kg	1.85 kg	2.55 kg

(Dimensions in mm)

UIB30 and UIB30H with optional drain plug + PC10HP

Spare Parts

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

Available Spares:

• Connector screw and gasket set (Items 10, 11, 12)

Recommended tightening torques:

• Connector screws (Item 10): 9/16" A/F, 30 - 35 N m