VVQT43.250 Siemens hybrid steam regulating valve DN250

NegotiableUpdate on 05/14

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Overview

VVQT43.250 Siemens Hybrid Steam Control Valve DN250 $r $n Product Overview: The VVQT43 series electric temperature control valve body adopts a single seat structure balanced valve produced by our company. It is equipped with a pressure balancing device inside, which can offset the thrust generated by the high pressure drop of the valve core, effectively solving the problem of on-site shut-off force under high pressure, thereby reducing the load on the actuator and extending its life. Heat transfer isolation measures have been taken according to the actual situation of steam field in China, which is more suitable for on-site use conditions in China.

Product Details

VVQT43.250 Siemens hybrid steam regulating valve DN250

VVQT43Series steam regulating valve PN16
The VVQT43 electric temperature control valve body adopts the single seat structure balanced valve produced by our company. It is equipped with a pressure balancing device inside, which can offset the thrust generated by the high pressure drop of the valve core, effectively solving the problem of high pressure on-site shut-off force, thereby reducing the load on the actuator and extending its service life. Heat transfer isolation measures have been taken according to the actual situation of steam field in China, which is more suitable for on-site use conditions in China. Suitable for chilled water, low-pressure hot water, domestic hot water, high-pressure hot water, seawater, hot oil, saturated steam and superheated steam in open or closed circuits, medium temperature -25-350 ℃, caliber: DN15-DN250.
Technical Specifications:
1. Nominal pressure: PN 16 PN25
2. Journey: DN32~DNl00:20mm
DNl00～DN250：40mm
3. Leakage rate: 0... 0.1% Kvs
4. Medium temperature:+1...+200 ℃+1...+350 ℃
5. Traffic characteristics: proportional
6. Material: Valve Body: Ductile Iron QT400 Cast Steel
Valve stem: stainless steel
Valve disc: stainless steel valve core: stainless steel
7. Valve stem seal: combination special seal
Valve body selection table:
I. Two way flange connection regulating valve stroke 20mm, optional actuator model: SAX61.03，SQX82，SKD62，SKD60，SKD32.51，SKD32.50，SKB62，SKB32.50，SKB32.51

Specification Model	traffic
QT-DN32	16（m3 /h）
QT-DN40	19（m3 /h）
QT-DN50	31（m3 /h）
QT-DN65	49（m3 /h）
QT-DN80	78（m3 /h）
QT-DN100	110（m3 /h）

II. Two way flange connection regulating valve stroke 40mm, optional actuator models: SKC62, SKC60, SKC32.61, SKC32.60

Specification Model	traffic
QT-DN125	Flow rate 200 (m3/h)
QT-DN150	Flow rate 300 (m3/h)
QT-DN200	Flow rate 450 (m3/h)
QT-DN250	Flow rate 630 (m3/h)

III. Under special working conditions, PN25 WCB cast steel material valve body medium temperature can be provided at+1-350 ℃

Application:

Suitable for continuous control in district heating systems and HVAC systems.
Can be installed in conjunction with various actuators such as Siemens SQX, SKD, SKB, SKC series, and Honeywell.

Product Features:

Precision Casting (Resin Sand) Ductile Iron GGG-5
The valve body adopts a pressure balanced type, ensuring high shut-off ability under low force and smooth switching under high pressure difference
Maximum allowable pressure difference of 1000kpa
The valve stem seal adopts a combination of special seals
All metal connected valve seat ensures service life

Technical Specifications:
Nominal pressure PN16
Applicable media: water and steam
Medium temperature+1-200 ℃
Percentage of fluid characteristics, etc
Leakage rate Kvs ≤ 0.02%
Valve stem, valve core, valve seat: 304 stainless steel
Travel DN40-100 20mm

DN100-150 40mm

Configuration Instructions

Specifications（DN）	kvValue（m³/h）	itinerary	SQX 700N	SKD 1000N	SKB 2800N	SKC 2800N
DN32	12	20mm	●	●	●	○
DN40	19		●	●	●	○
DN50	31		●	●	●	○
DN65	49		●	●	●	○
DN65	78		○	●	●	○
DN100	124		○	●	●	○
DN100	160	40mm	○	○	○	●
DN125	200		○	○	○	●
DN150	300		○	○	○	●
DN200	420		○	○	○	●
DN250	580		○	○	○	●